Overview 500M+ downloads. 80M+ monthly users. A decade of building - and we're still accelerating. Flo is the world's health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we're not slowing down. With 7M paid subscribers and the highest-rated experience in the App Store's health category, we've spent 10 years earning trust at scale. Now, we're building the next generation of digital health - AI-powered, privacy-first, clinically backed - to help our users know their body better. The job As an iOS Engineer at Flo, you'll help shape the mobile experience for millions of people, and do genuinely meaningful work in women's health. Our app is trusted by 1 in 4 women aged 18-44 in the US and used across 100+ countries, with machine learning and AI powering accurate cycle predictions and personalised, medically credible health insights. We build large-scale mobile applications with rich, intuitive interfaces - optimised for speed, accessibility and privacy. You'll join a cross-functional team working across the full mobile lifecycle, from feature ideation through to release and iteration, with real ownership over value delivery end to end. We're not a feature factory. Our engineers are pragmatic problem-solvers who thrive in fast-moving environments and care about what they ship. You'll have genuine scope to experiment, lead ambitious product initiatives and implement solutions that matter - not just clear a backlog. Flo is a constantly evolving product, and we give our engineers the trust and autonomy to evolve it. Your Experience Must have 6+ years in software engineering, with at least 3 years focused on building, shipping, and maintaining production mobile applications. Expert-level iOS development skills, with a proven track record of delivering high-quality apps at scale. Hands-on experience building complex mobile applications with rich, performant UIs - experience in global consumer-facing products is a strong plus. Deep proficiency in Swift; working knowledge of Objective-C and solid object-oriented design principles. Strong familiarity with Apple's ecosystem - frameworks, HIG guidelines, and end-to-end App Store submission and maintenance processes. Clear understanding of the mobile product lifecycle and comfortable working within Agile teams. A collaborative, growth-oriented mindset with the drive to take ownership and deliver. Nice to have Solid understanding of UX and interaction design principles, with the ability to collaborate effectively with designers and advocate for quality user experiences. Proven experience optimizing mobile app performance over constrained networks, including building and maintaining offline-first architectures. Hands-on experience with mobile CI/CD pipelines, including build automation, automated testing, and release workflows. Experience integrating with BI and analytics platforms, with familiarity in designing and interpreting A/B tests to drive product decisions. What you'll be doing What you'll be responsible for Building and maintaining features using modern frameworks, libraries, and internal component systems, ensuring consistency, scalability, and code quality across the codebase. Delivering polished, engaging user experiences that balance visual appeal with intuitive interaction design. Owning and contributing to a robust Continuous Delivery pipeline, ensuring fast, reliable, and safe releases to production. Annual Salary Range (ranges may vary based on skills and experience) £95,000 - £120,000 GBP How we work We're a mission-led, product-driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What you'll get We support impact with meaningful reward. Here's what that looks like: Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents Accelerated professional growth through world-changing work and learning support In-person collaboration and work in a hybrid model, with 3 days per week spent in the office 5-week fully paid sabbatical at 5-year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants (privacy notice for job applicants).
16/07/2026
Full time
Overview 500M+ downloads. 80M+ monthly users. A decade of building - and we're still accelerating. Flo is the world's health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we're not slowing down. With 7M paid subscribers and the highest-rated experience in the App Store's health category, we've spent 10 years earning trust at scale. Now, we're building the next generation of digital health - AI-powered, privacy-first, clinically backed - to help our users know their body better. The job As an iOS Engineer at Flo, you'll help shape the mobile experience for millions of people, and do genuinely meaningful work in women's health. Our app is trusted by 1 in 4 women aged 18-44 in the US and used across 100+ countries, with machine learning and AI powering accurate cycle predictions and personalised, medically credible health insights. We build large-scale mobile applications with rich, intuitive interfaces - optimised for speed, accessibility and privacy. You'll join a cross-functional team working across the full mobile lifecycle, from feature ideation through to release and iteration, with real ownership over value delivery end to end. We're not a feature factory. Our engineers are pragmatic problem-solvers who thrive in fast-moving environments and care about what they ship. You'll have genuine scope to experiment, lead ambitious product initiatives and implement solutions that matter - not just clear a backlog. Flo is a constantly evolving product, and we give our engineers the trust and autonomy to evolve it. Your Experience Must have 6+ years in software engineering, with at least 3 years focused on building, shipping, and maintaining production mobile applications. Expert-level iOS development skills, with a proven track record of delivering high-quality apps at scale. Hands-on experience building complex mobile applications with rich, performant UIs - experience in global consumer-facing products is a strong plus. Deep proficiency in Swift; working knowledge of Objective-C and solid object-oriented design principles. Strong familiarity with Apple's ecosystem - frameworks, HIG guidelines, and end-to-end App Store submission and maintenance processes. Clear understanding of the mobile product lifecycle and comfortable working within Agile teams. A collaborative, growth-oriented mindset with the drive to take ownership and deliver. Nice to have Solid understanding of UX and interaction design principles, with the ability to collaborate effectively with designers and advocate for quality user experiences. Proven experience optimizing mobile app performance over constrained networks, including building and maintaining offline-first architectures. Hands-on experience with mobile CI/CD pipelines, including build automation, automated testing, and release workflows. Experience integrating with BI and analytics platforms, with familiarity in designing and interpreting A/B tests to drive product decisions. What you'll be doing What you'll be responsible for Building and maintaining features using modern frameworks, libraries, and internal component systems, ensuring consistency, scalability, and code quality across the codebase. Delivering polished, engaging user experiences that balance visual appeal with intuitive interaction design. Owning and contributing to a robust Continuous Delivery pipeline, ensuring fast, reliable, and safe releases to production. Annual Salary Range (ranges may vary based on skills and experience) £95,000 - £120,000 GBP How we work We're a mission-led, product-driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What you'll get We support impact with meaningful reward. Here's what that looks like: Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents Accelerated professional growth through world-changing work and learning support In-person collaboration and work in a hybrid model, with 3 days per week spent in the office 5-week fully paid sabbatical at 5-year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants (privacy notice for job applicants).
Femtech Insider Ltd. is seeking an experienced iOS Engineer to enhance its top-rated health app for women. This role involves owning feature development, ensuring superior user experiences, and contributing to a Continuous Delivery pipeline. Ideal candidates have extensive mobile development experience, excellent Swift skills, and a collaborative mindset. This position supports hybrid work with competitive salaries ranging from £95,000 to £120,000 GBP, alongside numerous benefits including enhanced parental leave and a sabbatical after five years.
16/07/2026
Full time
Femtech Insider Ltd. is seeking an experienced iOS Engineer to enhance its top-rated health app for women. This role involves owning feature development, ensuring superior user experiences, and contributing to a Continuous Delivery pipeline. Ideal candidates have extensive mobile development experience, excellent Swift skills, and a collaborative mindset. This position supports hybrid work with competitive salaries ranging from £95,000 to £120,000 GBP, alongside numerous benefits including enhanced parental leave and a sabbatical after five years.
A leading women's health technology company in the United Kingdom is seeking a Cloud Security Engineer to ensure that security is embedded into the infrastructure. The ideal candidate will have 7+ years of experience in security engineering and significant expertise with AWS. Responsibilities include automating security processes, enhancing cloud security posture, and contributing to the overall security culture. This is a unique opportunity to impact the health data security of millions of users with a competitive salary and a hybrid work model.
02/07/2026
Full time
A leading women's health technology company in the United Kingdom is seeking a Cloud Security Engineer to ensure that security is embedded into the infrastructure. The ideal candidate will have 7+ years of experience in security engineering and significant expertise with AWS. Responsibilities include automating security processes, enhancing cloud security posture, and contributing to the overall security culture. This is a unique opportunity to impact the health data security of millions of users with a competitive salary and a hybrid work model.
500M+ downloads. 80M+ monthly users. A decade of building - and we're still accelerating. Flo is the world's health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we're not slowing down. With 7M paid subscribers and the highest-rated experience in the App Store's health category, we've spent 10 years earning trust at scale. Now, we're building the next generation of digital health - AI-powered, privacy-first, clinically backed - to help our users know their body better. The job We are looking for a Cloud Security Engineer to join Velocity, our Internal Platform team. Your mission is to ensure that every system, pipeline, and tool our engineers rely on is secure by default - so they can ship fast without ever compromising trust. The Scale of the Challenge At Flo we don't just have users, we have a global community. We are the women's health app, and in the last month alone, we saw 8.6M new installs and a 2.8M increase in active users. When millions of people trust you with their most personal health data, security isn't a feature - it's a foundation. The Mission: Velocity The Velocity team exists to eliminate friction. We build and own the foundation everything else runs on: cloud infrastructure, developer tooling, and SRE practices. You will: Embed Security Into the Platform: Bake security, compliance, and best practices into the core stack so they're invisible to developers and impossible to skip. Automate Everything: Drive security-as-code across infrastructure, CI/CD pipelines, and container lifecycles - making manual gates a thing of the past. What You Will Do Cloud Security Posture: Own and continuously strengthen Flo's AWS security posture using tools like GuardDuty, Inspector, Security Hub, and SSM Patch Manager. Container & Supply Chain Security: Harden container image security end-to-end - patch vulnerabilities automatically with Copacetic, sign and verify images with Cosign/Sigstore, and enforce policies at admission with Kyverno. Policy as Code: Manage CI/CD security across the organisation using policy-as-code tooling (Kyverno, Checkov), ensuring standards are enforced programmatically. Security Observability: Build visibility into security performance by measuring and visualising actionable metrics using tools like Databricks Dashboards or Looker. High-Scale Privacy: Support the infrastructure for industry-leading privacy features, such as our TIME-recognised "Anonymous Mode." Culture & Thought Leadership: Shape Flo's broader security culture through proactive engagement, documentation, and cross-team collaboration. What You Bring Experience: 7+ years in Infrastructure Security, Cloud Security, or Security Engineering roles. Cloud Native Mastery: Deep expertise in AWS security services and best practices is essential. Infrastructure as Code: Proficient in Terraform and Terragrunt - you run everything as code. Container Security: Strong knowledge of Kubernetes security, image hardening, and admission control. Identity & Access: Solid understanding of identity management principles - SSO, OAuth, JWT, SAML. Automation Mindset: Comfortable scripting in Python, Bash, or similar to automate security workflows. Network Security: Understanding of modern network security principles and their practical application. SSDLC: Experience building Secure Software Development Lifecycle phases into engineering workflows. Bonus Points Experience with security monitoring and event correlation systems (IDS/IPS, SIEM, AWS-native tooling). Knowledge of Zero Trust Architecture and its implementations (e.g., Cloudflare). Familiarity with secret management processes and tools. Experience in multi-cloud environments (AWS and preferably GCP). Understanding of business continuity principles (BIA, DRP). Professional accreditations such as AWS Security Specialty, CKS, or CISSP. Why Join Flo? High Impact: Your work directly protects the health data of millions - Flo is rewriting women's health, and you'll make sure it's done securely. Autonomy: We hire experts and empower you to deliver. Cutting-Edge Stack: Work with modern security tooling (GuardDuty, Kyverno, Cosign, Elastic Cloud Security) deployed on real production infrastructure at massive scale. How We Work We're a mission-led, product-driven team. We move fast, stay focused, and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What You'll Get Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents Accelerated professional growth through world-changing work and learning support In-person collaboration and work in a hybrid model, with 3 days per week spent in the office 5-week fully paid sabbatical at 5-year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
02/07/2026
Full time
500M+ downloads. 80M+ monthly users. A decade of building - and we're still accelerating. Flo is the world's health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we're not slowing down. With 7M paid subscribers and the highest-rated experience in the App Store's health category, we've spent 10 years earning trust at scale. Now, we're building the next generation of digital health - AI-powered, privacy-first, clinically backed - to help our users know their body better. The job We are looking for a Cloud Security Engineer to join Velocity, our Internal Platform team. Your mission is to ensure that every system, pipeline, and tool our engineers rely on is secure by default - so they can ship fast without ever compromising trust. The Scale of the Challenge At Flo we don't just have users, we have a global community. We are the women's health app, and in the last month alone, we saw 8.6M new installs and a 2.8M increase in active users. When millions of people trust you with their most personal health data, security isn't a feature - it's a foundation. The Mission: Velocity The Velocity team exists to eliminate friction. We build and own the foundation everything else runs on: cloud infrastructure, developer tooling, and SRE practices. You will: Embed Security Into the Platform: Bake security, compliance, and best practices into the core stack so they're invisible to developers and impossible to skip. Automate Everything: Drive security-as-code across infrastructure, CI/CD pipelines, and container lifecycles - making manual gates a thing of the past. What You Will Do Cloud Security Posture: Own and continuously strengthen Flo's AWS security posture using tools like GuardDuty, Inspector, Security Hub, and SSM Patch Manager. Container & Supply Chain Security: Harden container image security end-to-end - patch vulnerabilities automatically with Copacetic, sign and verify images with Cosign/Sigstore, and enforce policies at admission with Kyverno. Policy as Code: Manage CI/CD security across the organisation using policy-as-code tooling (Kyverno, Checkov), ensuring standards are enforced programmatically. Security Observability: Build visibility into security performance by measuring and visualising actionable metrics using tools like Databricks Dashboards or Looker. High-Scale Privacy: Support the infrastructure for industry-leading privacy features, such as our TIME-recognised "Anonymous Mode." Culture & Thought Leadership: Shape Flo's broader security culture through proactive engagement, documentation, and cross-team collaboration. What You Bring Experience: 7+ years in Infrastructure Security, Cloud Security, or Security Engineering roles. Cloud Native Mastery: Deep expertise in AWS security services and best practices is essential. Infrastructure as Code: Proficient in Terraform and Terragrunt - you run everything as code. Container Security: Strong knowledge of Kubernetes security, image hardening, and admission control. Identity & Access: Solid understanding of identity management principles - SSO, OAuth, JWT, SAML. Automation Mindset: Comfortable scripting in Python, Bash, or similar to automate security workflows. Network Security: Understanding of modern network security principles and their practical application. SSDLC: Experience building Secure Software Development Lifecycle phases into engineering workflows. Bonus Points Experience with security monitoring and event correlation systems (IDS/IPS, SIEM, AWS-native tooling). Knowledge of Zero Trust Architecture and its implementations (e.g., Cloudflare). Familiarity with secret management processes and tools. Experience in multi-cloud environments (AWS and preferably GCP). Understanding of business continuity principles (BIA, DRP). Professional accreditations such as AWS Security Specialty, CKS, or CISSP. Why Join Flo? High Impact: Your work directly protects the health data of millions - Flo is rewriting women's health, and you'll make sure it's done securely. Autonomy: We hire experts and empower you to deliver. Cutting-Edge Stack: Work with modern security tooling (GuardDuty, Kyverno, Cosign, Elastic Cloud Security) deployed on real production infrastructure at massive scale. How We Work We're a mission-led, product-driven team. We move fast, stay focused, and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What You'll Get Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents Accelerated professional growth through world-changing work and learning support In-person collaboration and work in a hybrid model, with 3 days per week spent in the office 5-week fully paid sabbatical at 5-year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
500M+ downloads. 80M+ monthly users. A decade of building - and we're still accelerating. Flo is the world's health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we're not slowing down. With 7M paid subscribers and the highest-rated experience in the App Store's health category, we've spent 10 years earning trust at scale. Now, we're building the next generation of digital health - AI-powered, privacy-first, clinically backed - to help our users know their body better. The job We are looking for a Senior Software Engineer with deep expertise in AI/ML infrastructure to join our AI Platform team and help build the GenAI platform that powers every AI feature at Flo. You will bridge core infrastructure, data engineering, and LLM development to deliver production-grade medical safety judges, fine-tuning pipelines, evaluation frameworks, and real-time personalisation. The team operates 60+ LLM-based evaluation judges, develops proprietary fine-tuned health models, and maintains active partnerships with Databricks, Google, OpenAI, Anthropic, and AWS. What You'll Do LLM Judge Ecosystem: build and scale Judge-as-a-Service, prompt registries, calibration pipelines, and evaluation orchestration using MLflow 3.x Fine-Tuning and Serving: develop LoRA/SFT/preference optimisation pipelines for health-domain models (Llama, Gemma, MedGemma) and manage model serving at scale on Databricks Data and Evaluation Pipelines: build synthetic Q&A generation, golden test sets, reward function engineering, and Delta table schemas in Unity Catalog for reliable, reproducible evaluation data Infrastructure: maintain Terraform-managed AWS infrastructure (EKS, S3, IAM), Databricks AI Gateway, and CI/CD pipelines (GitHub Actions) with evaluation gates and progressive rollout Cross-Functional Impact: collaborate with Product, Security, Analytics, and Medical teams, develop internal SDKs and APIs consumed by 5+ teams, and engage directly with technology partners on pre-release capabilities Experience and Skills Must have Engineering maturity: 7+ years of software engineering, 4+ years focused on ML/AI platforms LLM experience: recent hands on work with at least one of: fine tuning, prompt engineering, LLM evaluation, or model serving Technical stack: strong Python across production services and data pipelines, data engineering fundamentals (Spark, Delta tables, Parquet) Platform and infrastructure: Databricks (MLflow, Unity Catalog, Model Serving), AWS (EKS/Kubernetes, IAM), Terraform, GitHub Actions Cross-domain flexibility: comfort working across ML, data engineering, and infrastructure. You don't need to be expert in all three, but you contribute wherever the team needs it Nice to have LLM evaluation frameworks (judges, graders, calibration methodology) or fine tuning techniques (LoRA, RLHF/DPO, model distillation) ML data engineering: synthetic data generation, evaluation dataset design, annotation pipelines Healthcare, regulated industry, or safety critical AI systems experience Prompt optimisation frameworks (DSPy or similar), feature stores (Tecton) Annual Salary Range (ranges may vary based on skills and experience) £120,000 - £150,000 GBP How We Work We're a mission led, product driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What You'll Get Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same sex and adoptive parents Accelerated professional growth through world changing work and learning support In person collaboration and work in a hybrid model, with 3 days per week spent in the office 5 week fully paid sabbatical at 5-year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
01/07/2026
Full time
500M+ downloads. 80M+ monthly users. A decade of building - and we're still accelerating. Flo is the world's health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we're not slowing down. With 7M paid subscribers and the highest-rated experience in the App Store's health category, we've spent 10 years earning trust at scale. Now, we're building the next generation of digital health - AI-powered, privacy-first, clinically backed - to help our users know their body better. The job We are looking for a Senior Software Engineer with deep expertise in AI/ML infrastructure to join our AI Platform team and help build the GenAI platform that powers every AI feature at Flo. You will bridge core infrastructure, data engineering, and LLM development to deliver production-grade medical safety judges, fine-tuning pipelines, evaluation frameworks, and real-time personalisation. The team operates 60+ LLM-based evaluation judges, develops proprietary fine-tuned health models, and maintains active partnerships with Databricks, Google, OpenAI, Anthropic, and AWS. What You'll Do LLM Judge Ecosystem: build and scale Judge-as-a-Service, prompt registries, calibration pipelines, and evaluation orchestration using MLflow 3.x Fine-Tuning and Serving: develop LoRA/SFT/preference optimisation pipelines for health-domain models (Llama, Gemma, MedGemma) and manage model serving at scale on Databricks Data and Evaluation Pipelines: build synthetic Q&A generation, golden test sets, reward function engineering, and Delta table schemas in Unity Catalog for reliable, reproducible evaluation data Infrastructure: maintain Terraform-managed AWS infrastructure (EKS, S3, IAM), Databricks AI Gateway, and CI/CD pipelines (GitHub Actions) with evaluation gates and progressive rollout Cross-Functional Impact: collaborate with Product, Security, Analytics, and Medical teams, develop internal SDKs and APIs consumed by 5+ teams, and engage directly with technology partners on pre-release capabilities Experience and Skills Must have Engineering maturity: 7+ years of software engineering, 4+ years focused on ML/AI platforms LLM experience: recent hands on work with at least one of: fine tuning, prompt engineering, LLM evaluation, or model serving Technical stack: strong Python across production services and data pipelines, data engineering fundamentals (Spark, Delta tables, Parquet) Platform and infrastructure: Databricks (MLflow, Unity Catalog, Model Serving), AWS (EKS/Kubernetes, IAM), Terraform, GitHub Actions Cross-domain flexibility: comfort working across ML, data engineering, and infrastructure. You don't need to be expert in all three, but you contribute wherever the team needs it Nice to have LLM evaluation frameworks (judges, graders, calibration methodology) or fine tuning techniques (LoRA, RLHF/DPO, model distillation) ML data engineering: synthetic data generation, evaluation dataset design, annotation pipelines Healthcare, regulated industry, or safety critical AI systems experience Prompt optimisation frameworks (DSPy or similar), feature stores (Tecton) Annual Salary Range (ranges may vary based on skills and experience) £120,000 - £150,000 GBP How We Work We're a mission led, product driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What You'll Get Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same sex and adoptive parents Accelerated professional growth through world changing work and learning support In person collaboration and work in a hybrid model, with 3 days per week spent in the office 5 week fully paid sabbatical at 5-year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
A leading health tech company based in the United Kingdom is seeking a Senior Software Engineer with expertise in AI/ML infrastructure. You will work on developing the GenAI platform that powers AI features for the world's top health and fitness app. Key responsibilities include building evaluation frameworks and maintaining a robust infrastructure. Ideal candidates should have extensive experience in software engineering, particularly with LLMs, and be comfortable collaborating across domains. The role offers a competitive salary and a hybrid working model.
01/07/2026
Full time
A leading health tech company based in the United Kingdom is seeking a Senior Software Engineer with expertise in AI/ML infrastructure. You will work on developing the GenAI platform that powers AI features for the world's top health and fitness app. Key responsibilities include building evaluation frameworks and maintaining a robust infrastructure. Ideal candidates should have extensive experience in software engineering, particularly with LLMs, and be comfortable collaborating across domains. The role offers a competitive salary and a hybrid working model.
Femtech Insider Ltd. is seeking an IT Business Partner to bridge business and IT. The role involves owning the SaaS portfolio, engaging with senior stakeholders, and developing technology strategies. Responsibilities include managing vendor relationships, supporting IT governance, and providing hands-on support when necessary. The position offers competitive salary, performance incentives, and a hybrid work model with 5 weeks of fully paid sabbatical after 5 years. Join a diverse team fostering equity and inclusion.
28/06/2026
Full time
Femtech Insider Ltd. is seeking an IT Business Partner to bridge business and IT. The role involves owning the SaaS portfolio, engaging with senior stakeholders, and developing technology strategies. Responsibilities include managing vendor relationships, supporting IT governance, and providing hands-on support when necessary. The position offers competitive salary, performance incentives, and a hybrid work model with 5 weeks of fully paid sabbatical after 5 years. Join a diverse team fostering equity and inclusion.
A leading health tech firm is seeking a skilled Cloud Security Engineer to enhance AWS security and enable secure development. This role focuses on automating security processes and strengthening cloud infrastructure. Candidates should have at least 7 years of experience and expertise in AWS services, Terraform, and Kubernetes security. A competitive salary, hybrid work model, and diverse benefits package are offered, contributing to significant support for female health data security.
26/06/2026
Full time
A leading health tech firm is seeking a skilled Cloud Security Engineer to enhance AWS security and enable secure development. This role focuses on automating security processes and strengthening cloud infrastructure. Candidates should have at least 7 years of experience and expertise in AWS services, Terraform, and Kubernetes security. A competitive salary, hybrid work model, and diverse benefits package are offered, contributing to significant support for female health data security.
The job You will act as the primary bridge between the business and IT, translating strategic objectives into technology solutions. Reporting to the Head of IT, you will own the enterprise SaaS portfolio, build trusted relationships with senior business stakeholders, and, as a confident, hands on IT generalist, ensure the day to day technology experience of staff is seamless. This is a standalone role requiring someone who is equally comfortable presenting a technology strategy to the leadership team and troubleshooting a conferencing system before an important meeting. Responsibilities Technology Strategy & Planning Partner with senior leaders and department heads to understand business goals and co develop a technology strategy that actively enables them Support the Head of IT to develop and maintain a multi year IT roadmap, presenting it to stakeholders on a regular basis Identify and champion opportunities to improve business performance, efficiency and competitive advantage through technology Contribute to annual IT budgeting and business case development for technology investment. SaaS & Software Lifecycle Management Own the end to end lifecycle of the company's SaaS portfolio - from evaluation and procurement through to renewal, rationalisation and retirement Manage vendor relationships, contracts and licence optimisation to ensure value for money and appropriate usage Maintain a clear, current inventory of all software assets, their owners, costs and renewal schedules Lead or support the selection and implementation of new software platforms, working closely with business stakeholders and the offshore support team. Stakeholder Engagement & Relationship Management Serve as the trusted, visible, on site technology advisor to business stakeholders at all levels Translate business needs into clear, actionable requirements for the offshore IT support team Act as the escalation point and internal advocate for the business when offshore support is insufficient or unresponsive Produce clear, accessible technology communications and updates for non technical audiences. IT Governance & Risk Ensure software and systems comply with relevant data protection, security and licensing obligations Identify and manage technology related risks, feeding into broader business continuity and risk planning Define and maintain appropriate IT policies and standards in conjunction with the Head of IT. Hands on Support (as required) Provide practical, on site support when the situation demands it - including troubleshooting meeting room AV and conferencing equipment, supporting new starter onboarding, and resolving issues that cannot be addressed remotely Be the visible, competent face of IT in the office, ensuring issues are resolved quickly and professionally. Skills & Experience Essential Demonstrable experience in an IT Business Partner, IT Manager or senior technology generalist role, with responsibility for stakeholder engagement at a senior level Strong understanding of SaaS platforms and software contract and licence management Proven ability to develop or contribute to technology roadmaps and strategies, and to communicate them clearly to non technical audiences Experience translating business requirements into IT solutions, working with internal or external delivery teams Comfortable operating hands on in a small company environment, including resolving practical IT issues as needed Strong organisational and prioritisation skills, with the ability to manage a varied workload independently. Desirable Experience managing or coordinating an offshore or outsourced IT support function Familiarity with IT governance frameworks such as ITIL Experience with software procurement and vendor negotiation Exposure to cyber security principles and data protection obligations (e.g. UK GDPR). What you'll get Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same sex and adoptive parents Accelerated professional growth through world changing work and learning support In person collaboration and work in a hybrid model, with 3 days per week spent in the office 5 week fully paid sabbatical at 5 year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
24/06/2026
Full time
The job You will act as the primary bridge between the business and IT, translating strategic objectives into technology solutions. Reporting to the Head of IT, you will own the enterprise SaaS portfolio, build trusted relationships with senior business stakeholders, and, as a confident, hands on IT generalist, ensure the day to day technology experience of staff is seamless. This is a standalone role requiring someone who is equally comfortable presenting a technology strategy to the leadership team and troubleshooting a conferencing system before an important meeting. Responsibilities Technology Strategy & Planning Partner with senior leaders and department heads to understand business goals and co develop a technology strategy that actively enables them Support the Head of IT to develop and maintain a multi year IT roadmap, presenting it to stakeholders on a regular basis Identify and champion opportunities to improve business performance, efficiency and competitive advantage through technology Contribute to annual IT budgeting and business case development for technology investment. SaaS & Software Lifecycle Management Own the end to end lifecycle of the company's SaaS portfolio - from evaluation and procurement through to renewal, rationalisation and retirement Manage vendor relationships, contracts and licence optimisation to ensure value for money and appropriate usage Maintain a clear, current inventory of all software assets, their owners, costs and renewal schedules Lead or support the selection and implementation of new software platforms, working closely with business stakeholders and the offshore support team. Stakeholder Engagement & Relationship Management Serve as the trusted, visible, on site technology advisor to business stakeholders at all levels Translate business needs into clear, actionable requirements for the offshore IT support team Act as the escalation point and internal advocate for the business when offshore support is insufficient or unresponsive Produce clear, accessible technology communications and updates for non technical audiences. IT Governance & Risk Ensure software and systems comply with relevant data protection, security and licensing obligations Identify and manage technology related risks, feeding into broader business continuity and risk planning Define and maintain appropriate IT policies and standards in conjunction with the Head of IT. Hands on Support (as required) Provide practical, on site support when the situation demands it - including troubleshooting meeting room AV and conferencing equipment, supporting new starter onboarding, and resolving issues that cannot be addressed remotely Be the visible, competent face of IT in the office, ensuring issues are resolved quickly and professionally. Skills & Experience Essential Demonstrable experience in an IT Business Partner, IT Manager or senior technology generalist role, with responsibility for stakeholder engagement at a senior level Strong understanding of SaaS platforms and software contract and licence management Proven ability to develop or contribute to technology roadmaps and strategies, and to communicate them clearly to non technical audiences Experience translating business requirements into IT solutions, working with internal or external delivery teams Comfortable operating hands on in a small company environment, including resolving practical IT issues as needed Strong organisational and prioritisation skills, with the ability to manage a varied workload independently. Desirable Experience managing or coordinating an offshore or outsourced IT support function Familiarity with IT governance frameworks such as ITIL Experience with software procurement and vendor negotiation Exposure to cyber security principles and data protection obligations (e.g. UK GDPR). What you'll get Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same sex and adoptive parents Accelerated professional growth through world changing work and learning support In person collaboration and work in a hybrid model, with 3 days per week spent in the office 5 week fully paid sabbatical at 5 year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
Femtech Insider Ltd. in Greater London seeks an Android Engineer to enhance their health & fitness app, trusted by millions. The ideal candidate will have over 7 years of Android development experience, proficiency in Java, and a passion for building intuitive user interfaces. The position offers a competitive salary range of £95,000 to £120,000 and supports a hybrid work model with a focus on women's health. Additional perks include generous parental leave, performance incentives, and ongoing professional growth opportunities.
24/06/2026
Full time
Femtech Insider Ltd. in Greater London seeks an Android Engineer to enhance their health & fitness app, trusted by millions. The ideal candidate will have over 7 years of Android development experience, proficiency in Java, and a passion for building intuitive user interfaces. The position offers a competitive salary range of £95,000 to £120,000 and supports a hybrid work model with a focus on women's health. Additional perks include generous parental leave, performance incentives, and ongoing professional growth opportunities.
500M+ downloads. 80M+ monthly users. A decade of building - and we're still accelerating. Flo is the world's health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we're not slowing down. With 7M paid subscribers and the highest rated experience in the App Store's health category, we've spent 10 years earning trust at scale. Now, we're building the next generation of digital health - AI powered, privacy first, clinically backed - to help our users know their body better. The job As an Android Engineer at Flo, you'll help shape the mobile experience for millions of people, and do genuinely meaningful work in women's health. Our app is trusted by 1 in 4 women aged 18-44 in the US and used across 100+ countries, with machine learning and AI powering accurate cycle predictions and personalised, medically credible health insights. We build large scale mobile applications with rich, intuitive interfaces - optimised for speed, accessibility and privacy. You'll join a cross functional team working across the full mobile lifecycle, from feature ideation through to release and iteration, with real ownership over value delivery end to end. We're not a feature factory. Our engineers are pragmatic problem solvers who thrive in fast moving environments and care about what they ship. You'll have genuine scope to experiment, lead ambitious product initiatives and implement solutions that matter - not just clear a backlog. Flo is a constantly evolving product, and we give our engineers the trust and autonomy to evolve it. Your Experience Must have: 7+ years of hands on Android development experience, with a track record of shipping and maintaining production applications at scale Experience building large, complex mobile applications with polished, performant UIs - ideally for global consumer audiences Strong proficiency in Java, with solid object oriented design principles and a keen eye for clean, maintainable code Deep knowledge of the Android ecosystem - including platform fragmentation, UI design patterns, and delivering consistent experiences across a wide range of screen sizes and devices Solid familiarity with Google technologies, Play Store submission processes, and Google's development guidelines A good grasp of the full mobile product lifecycle, with practical experience working within Agile teams Nice to have Knowledge of Kotlin programming language, Clean Architecture and reactive programming An eye for UX and interaction design - you care about how things feel, not just how they work Hands on experience with mobile CI/CD tooling, including build, test and release automation Experience integrating with analytics and BI systems, including A/B testing frameworks Experience with alternative Android markets Experience optimising data usage over mobile networks and building offline first applications What you'll be doing You'll be responsible for: Developing features using modern frameworks, libraries and in house components - contributing to a shared codebase built to last Delivering polished, intuitive user experiences that meet a high bar for design and usability Maintaining and improving a continuous delivery pipeline, ensuring fast, reliable and safe releases to production Annual Salary Range (ranges may vary based on skills and experience) £95,000 - £120,000 GBP How we work We're a mission led, product driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What you'll get We support impact with meaningful reward. Here's what that looks like: Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same sex and adoptive parents Accelerated professional growth through world changing work and learning support In person collaboration and work in a hybrid model, with 3 days per week spent in the office 5 week fully paid sabbatical at 5 year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
24/06/2026
Full time
500M+ downloads. 80M+ monthly users. A decade of building - and we're still accelerating. Flo is the world's health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we're not slowing down. With 7M paid subscribers and the highest rated experience in the App Store's health category, we've spent 10 years earning trust at scale. Now, we're building the next generation of digital health - AI powered, privacy first, clinically backed - to help our users know their body better. The job As an Android Engineer at Flo, you'll help shape the mobile experience for millions of people, and do genuinely meaningful work in women's health. Our app is trusted by 1 in 4 women aged 18-44 in the US and used across 100+ countries, with machine learning and AI powering accurate cycle predictions and personalised, medically credible health insights. We build large scale mobile applications with rich, intuitive interfaces - optimised for speed, accessibility and privacy. You'll join a cross functional team working across the full mobile lifecycle, from feature ideation through to release and iteration, with real ownership over value delivery end to end. We're not a feature factory. Our engineers are pragmatic problem solvers who thrive in fast moving environments and care about what they ship. You'll have genuine scope to experiment, lead ambitious product initiatives and implement solutions that matter - not just clear a backlog. Flo is a constantly evolving product, and we give our engineers the trust and autonomy to evolve it. Your Experience Must have: 7+ years of hands on Android development experience, with a track record of shipping and maintaining production applications at scale Experience building large, complex mobile applications with polished, performant UIs - ideally for global consumer audiences Strong proficiency in Java, with solid object oriented design principles and a keen eye for clean, maintainable code Deep knowledge of the Android ecosystem - including platform fragmentation, UI design patterns, and delivering consistent experiences across a wide range of screen sizes and devices Solid familiarity with Google technologies, Play Store submission processes, and Google's development guidelines A good grasp of the full mobile product lifecycle, with practical experience working within Agile teams Nice to have Knowledge of Kotlin programming language, Clean Architecture and reactive programming An eye for UX and interaction design - you care about how things feel, not just how they work Hands on experience with mobile CI/CD tooling, including build, test and release automation Experience integrating with analytics and BI systems, including A/B testing frameworks Experience with alternative Android markets Experience optimising data usage over mobile networks and building offline first applications What you'll be doing You'll be responsible for: Developing features using modern frameworks, libraries and in house components - contributing to a shared codebase built to last Delivering polished, intuitive user experiences that meet a high bar for design and usability Maintaining and improving a continuous delivery pipeline, ensuring fast, reliable and safe releases to production Annual Salary Range (ranges may vary based on skills and experience) £95,000 - £120,000 GBP How we work We're a mission led, product driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What you'll get We support impact with meaningful reward. Here's what that looks like: Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same sex and adoptive parents Accelerated professional growth through world changing work and learning support In person collaboration and work in a hybrid model, with 3 days per week spent in the office 5 week fully paid sabbatical at 5 year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.
The Job We're looking for a Senior Product Manager (Payments) to own the strategy and execution of Flo's payments and subscription platform across Web, iOS, and Android. This is a high-impact, high-visibility role at the intersection of monetisation, platform, and operations, working closely with the VP of Product (Revenue) to shape the payment foundation that will support Flo's next stage of global growth. You will work across Product, Engineering, Data, Finance, Legal/Compliance, Support, and commercial stakeholders to build payment experiences and platform capabilities that are reliable, scalable, compliant, and growth-oriented. Payments are a core part of Flo's growth engine and a critical platform capability for the business. As we continue to scale globally, we need strong product leadership in this area to ensure our payment stack, subscription systems, and monetisation mechanics are robust, efficient, and ready for the next stage of growth. As Senior Product Manager, Payments Platform, you will play a central role in shaping that foundation. Your Experience Must have: Significant product management experience, with strong exposure to payments, billing, subscriptions, or financial platform products Deep understanding of online payment systems and subscription mechanics, ideally in a B2C subscription or consumer app environment Experience with mobile subscription ecosystems, including Apple and Google billing environments Experience with web payment providers and billing platforms such as Stripe, Adyen, Braintree, RevenueCat, or similar Experience managing fraud and dispute processes, including chargeback mitigation and refund strategy Strong grasp of key payments concepts such as: Payment flows SCA / 3DS Tokenisation Issuer declines Retries and dunning Refunds and disputes Reconciliation Subscription lifecycle and entitlement logic Working knowledge of indirect tax compliance (VAT/GST) and how it intersects with subscription billing and multi-market operations Experience working closely with engineers on platform or infrastructure-heavy product areas Proven track record of delivering complex cross-functional initiatives in fast-paced environments Strong analytical skills and ability to use data to diagnose performance issues, evaluate trade-offs, and drive decisions Excellent stakeholder management, with the ability to work effectively across Product, Engineering, Data, Finance, Legal/Compliance, and Support Ability to balance strategic thinking with hands on execution and operational detail Nice to have: Experience building in-house billing capabilities or implementing payment orchestration layers Familiarity with tax determination platforms such as Avalara, TaxJar, or Vertex Experience defining payment flows for external partner programmes (e.g., sponsored access, partner perks, third party app stores) Exposure to payment automation and AI applications in payments contexts (e.g., intelligent retry logic, decline prediction, dispute automation) What you'll be doing You'll be responsible for: Own the product roadmap for Flo's payments and billing platform across Web, iOS, and Android Define and improve the end to end subscription and billing journey, including: Purchase and checkout flows Entitlement and receipt validation Renewals, retries, grace periods, cancellations, and refunds Payment failure recovery and dunning Partner with Engineering and Data to improve the performance and resilience of our payment stack, including: Acceptance rate optimisation Issuer decline analysis SCA / 3DS flows Tokenisation and retry logic Payment method coverage and routing Build the product capabilities, internal tooling, and automations required to support scalable and audit friendly payment operations Work closely with Finance and Operations teams to improve reconciliation, reporting accuracy, and process efficiency Own the tax compliance product surface, working with Finance and Legal to ensure correct tax determination, indirect tax handling (VAT/GST), and compliance with marketplace facilitator obligations across our key markets Identify and drive monetisation opportunities linked to the payments experience, such as checkout optimisation, refunds strategy, pricing mechanics, promos, and payment method expansion Lead fraud and dispute management strategy, including chargeback reduction, fraud detection tooling, and refund policy optimisation Establish clear frameworks for experimentation and decision making, including A/B testing, KPI definitions, and performance dashboards Align stakeholders across multiple teams and functions, balancing growth, reliability, compliance, and user experience Act as the subject matter expert for payments and subscription platform topics within the product organisation How we work We're a mission led, product driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What you'll get Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same sex and adoptive parents Accelerated professional growth through world changing work and learning support In person collaboration and work in a hybrid model, with 3 days per week spent in the office 5 week fully paid sabbatical at 5 year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants. Annual Salary Range: £92,000 - £115,000 GBP
21/06/2026
Full time
The Job We're looking for a Senior Product Manager (Payments) to own the strategy and execution of Flo's payments and subscription platform across Web, iOS, and Android. This is a high-impact, high-visibility role at the intersection of monetisation, platform, and operations, working closely with the VP of Product (Revenue) to shape the payment foundation that will support Flo's next stage of global growth. You will work across Product, Engineering, Data, Finance, Legal/Compliance, Support, and commercial stakeholders to build payment experiences and platform capabilities that are reliable, scalable, compliant, and growth-oriented. Payments are a core part of Flo's growth engine and a critical platform capability for the business. As we continue to scale globally, we need strong product leadership in this area to ensure our payment stack, subscription systems, and monetisation mechanics are robust, efficient, and ready for the next stage of growth. As Senior Product Manager, Payments Platform, you will play a central role in shaping that foundation. Your Experience Must have: Significant product management experience, with strong exposure to payments, billing, subscriptions, or financial platform products Deep understanding of online payment systems and subscription mechanics, ideally in a B2C subscription or consumer app environment Experience with mobile subscription ecosystems, including Apple and Google billing environments Experience with web payment providers and billing platforms such as Stripe, Adyen, Braintree, RevenueCat, or similar Experience managing fraud and dispute processes, including chargeback mitigation and refund strategy Strong grasp of key payments concepts such as: Payment flows SCA / 3DS Tokenisation Issuer declines Retries and dunning Refunds and disputes Reconciliation Subscription lifecycle and entitlement logic Working knowledge of indirect tax compliance (VAT/GST) and how it intersects with subscription billing and multi-market operations Experience working closely with engineers on platform or infrastructure-heavy product areas Proven track record of delivering complex cross-functional initiatives in fast-paced environments Strong analytical skills and ability to use data to diagnose performance issues, evaluate trade-offs, and drive decisions Excellent stakeholder management, with the ability to work effectively across Product, Engineering, Data, Finance, Legal/Compliance, and Support Ability to balance strategic thinking with hands on execution and operational detail Nice to have: Experience building in-house billing capabilities or implementing payment orchestration layers Familiarity with tax determination platforms such as Avalara, TaxJar, or Vertex Experience defining payment flows for external partner programmes (e.g., sponsored access, partner perks, third party app stores) Exposure to payment automation and AI applications in payments contexts (e.g., intelligent retry logic, decline prediction, dispute automation) What you'll be doing You'll be responsible for: Own the product roadmap for Flo's payments and billing platform across Web, iOS, and Android Define and improve the end to end subscription and billing journey, including: Purchase and checkout flows Entitlement and receipt validation Renewals, retries, grace periods, cancellations, and refunds Payment failure recovery and dunning Partner with Engineering and Data to improve the performance and resilience of our payment stack, including: Acceptance rate optimisation Issuer decline analysis SCA / 3DS flows Tokenisation and retry logic Payment method coverage and routing Build the product capabilities, internal tooling, and automations required to support scalable and audit friendly payment operations Work closely with Finance and Operations teams to improve reconciliation, reporting accuracy, and process efficiency Own the tax compliance product surface, working with Finance and Legal to ensure correct tax determination, indirect tax handling (VAT/GST), and compliance with marketplace facilitator obligations across our key markets Identify and drive monetisation opportunities linked to the payments experience, such as checkout optimisation, refunds strategy, pricing mechanics, promos, and payment method expansion Lead fraud and dispute management strategy, including chargeback reduction, fraud detection tooling, and refund policy optimisation Establish clear frameworks for experimentation and decision making, including A/B testing, KPI definitions, and performance dashboards Align stakeholders across multiple teams and functions, balancing growth, reliability, compliance, and user experience Act as the subject matter expert for payments and subscription platform topics within the product organisation How we work We're a mission led, product driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You'll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. What you'll get Competitive salary and annual reviews Opportunity to participate in Flo's performance incentive scheme Paid holiday, sick leave, and female health leave Enhanced parental leave and pay for maternity, paternity, same sex and adoptive parents Accelerated professional growth through world changing work and learning support In person collaboration and work in a hybrid model, with 3 days per week spent in the office 5 week fully paid sabbatical at 5 year Floversary Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We're proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants. Annual Salary Range: £92,000 - £115,000 GBP