Harnham - Data & Analytics Recruitment

Senior Frontend Engineer £70,000 - £90,000 Shirebrook, Mansfield (3x a week) This is an opportunity to take real ownership of front-end engineering at scale, shaping high impact digital experiences used by millions. You will work on complex, customer-facing platforms while influencing technical direction, standards, and best practice across multiple products. THE COMPANY They are a large, digitally driven organisation undergoing significant transformation across their online and mobile platforms. Technology sits at the heart of how they engage customers, with a strong focus on performance, usability, and modern architecture. THE ROLE As a Senior Frontend Engineer, you will drive the design and delivery of scalable, high-performance front-end solutions while setting technical standards and mentoring across the product teams. Specifically, you can expect to be involved in the following: Take technical ownership of front-end architecture, including component design, state management, and application structure. Build complex user interfaces using frameworks such as React, Next.js, and TypeScript. Partner with product, design, and content to shape solutions from discovery through to delivery. Lead by example through code reviews, mentoring, and knowledge sharing. Contribute to API driven platforms, working with GraphQL, REST, and Node.js where needed. SKILLS AND EXPERIENCE The successful Senior Frontend Engineer will have the following skills and experience: Strong commercial experience delivering front end solutions in large scale production environments. Deep expertise in JavaScript and TypeScript with modern front-end frameworks. Solid understanding of web performance, accessibility standards, and responsive design. Experience working across the full development lifecycle, including CI/CD and automated testing. Confident communicator who enjoys collaborating across disciplines. BENEFITS The successful Senior Frontend Engineer will receive the following benefits: Salary between £70,000 - £90,000 - depending on experience HOW TO APPLY Please register your interest by sending your resume to Majid Latif via the Apply link on this page.

GCP Data Engineer £600 - £650 per day inside IR35 6-month contract Hybrid working in London We're working with a global healthcare and AI research organisation at the forefront of applying data engineering and machine learning to accelerate scientific discovery. Their work supports large-scale, domain-specific datasets that power research into life-changing treatments. They're now looking for a GCP Data Engineer to join a multidisciplinary team responsible for building and operating robust, cloud-native data infrastructure that supports ML workloads, particularly PyTorch-based pipelines. The Role You'll focus on designing, building, and maintaining scalable data pipelines and storage systems in Google Cloud, supporting ML teams by enabling efficient data loading, dataset management, and cloud-based training workflows. You'll work closely with ML engineers and researchers, ensuring that large volumes of unstructured and structured data can be reliably accessed, processed, and consumed by PyTorch-based systems. Key Responsibilities Design and build cloud-native data pipelines using Python on GCP Manage large-scale object storage for unstructured data (Google Cloud Storage preferred) Support PyTorch-based workflows, particularly around data loading and dataset management in the cloud Build and optimise data integrations with BigQuery and SQL databases Ensure efficient memory usage and performance when handling large datasets Collaborate with ML engineers to support training and experimentation pipelines (without owning model development) Implement monitoring, testing, and documentation to ensure production-grade reliability Participate in agile ceremonies, code reviews, and technical design discussions Tech Stack & Experience Must Have Strong Python development experience Hands-on experience with cloud object storage for unstructured data (Google Cloud Storage preferred; AWS S3 also acceptable) PyTorch experience, particularly: Dataset management Data loading pipelines Running PyTorch workloads in cloud environments We are not looking for years of PyTorch experience - one or two substantial 6-12 month projects is ideal 5+ years cloud experience, ideally working with large numbers of files in cloud buckets Nice to Have Experience with additional GCP services, such as: Cloud Run Cloud SQL Cloud Scheduler Exposure to machine learning workflows (not ML engineering) Some pharma or life sciences experience, or a genuine interest in working with domain-specific scientific data Please send your CV

CRO Manager London - Hybrid - 3x a week Up to £55,000 This is an opportunity to step into a senior CRO role within a boutique, premium performance marketing consultancy where experimentation sits at the heart of commercial decision making. You will own end-to-end experimentation programmes, work directly with ambitious clients, and play a visible role in shaping how conversion optimisation drives growth. The Company They are a fast-growing performance marketing consultancy operating at the intersection of strategy, experimentation, analytics, and digital performance. The business works with well known, fast growth brands across sectors including entertainment, publishing, ecommerce, B2B, and travel. With a strong data driven culture and a reputation for award winning work, they offer the feel of an in-house team while retaining the variety and pace of agency life. The Role Own full end to end experimentation programmes across multiple client accounts Lead quantitative and qualitative research to uncover insight and opportunity Translate data and behavioural insight into commercially impactful test hypotheses Prioritise test ideas based on potential uplift, effort, and strategic value Manage the setup, execution, and analysis of experiments using industry leading testing tools Partner closely with clients as an extension of their internal teams Collaborate with analytics, development, and other marketing specialists to deliver robust testing frameworks Communicate results clearly, focusing on learning, impact, and next steps Your Skills & Experience Strong commercial experience in conversion rate optimisation or experimentation Confidence working with large datasets and web analytics platforms such as GA4 or Adobe Analytics Hands on experience with testing and personalisation tools such as Optimizely, VWO, or similar Proven ability to manage the full experimentation lifecycle from insight through to analysis A technical and analytical mindset with curiosity for new platforms and methodologies Comfortable working directly with clients and senior stakeholders What They Offer Exposure to a wide variety of high profile, fast growth clients Clear opportunities to broaden skills across CRO, analytics, and wider digital strategy Supportive, non hierarchical culture with strong learning and development focus How to Apply Apply now to explore how this CRO Manager role could accelerate your career in experimentation and data driven growth.

SENIOR SOFTWARE DEVELOPER £85,000 GUILDFORD This is an opportunity to join an innovation-led software consultancy working on complex, real-world engineering problems. The role offers high levels of autonomy, technically challenging work, and exposure to a wide variety of short-to-mid-term projects. THE COMPANY Our client is a specialist software consultancy delivering bespoke products for organisations operating in highly constrained, problem-heavy environments. They focus on technical excellence, innovation and delivery quality, offering engineers the chance to work on challenging systems rather than repetitive product features. THE ROLE Design and build end-to-end software solutions Work as a senior full-stack engineer (backend-leaning) Own delivery of complex technical problems Build, deploy and support cloud-based systems Collaborate with engineers and data specialists on production solutions Contribute to technical decisions and coding standards YOUR SKILLS AND EXPERIENCE 5+ years commercial software development experience Strong Java and Spring / Spring Boot background Frontend experience with Angular (React or Vue also acceptable) Experience building microservices and APIs Cloud experience (Azure preferred, AWS acceptable) Comfortable working independently with minimal supervision LOCATION & WORKING PATTERN Hybrid working Office within 30 minutes commute from London Waterloo SALARY AND BENEFITS Up to £80,000 base salary Pension contribution 25 days holiday plus bank holidays (option to buy more) Paid training days and charity days Option to work remotely from abroad for part of the year SECURITY REQUIREMENTS Must be eligible to obtain UK Security Clearance No sponsorship available HOW TO APPLY Please submit your CV to Harry Lack for review through the ' apply' link.

Senior Backend Engineer Derbyshire. Hybrid, 3 days onsite. £85,000 to £90,000 This is a senior backend role with real scale and complexity, focused on building and evolving the services that underpin a large, high traffic ecommerce platform. The team is looking for engineers who enjoy ownership, ambiguity, and solving problems in fast moving environments rather than operating within rigid processes. The Company They are a large, digitally led retail and ecommerce organisation investing heavily in modern platform engineering. Their technology teams support dozens of consumer facing websites and applications, all powered by a shared microservices architecture. Engineering plays a central role in the business, with strong expectations around accountability, delivery, and technical quality. The Role Design, build, and scale Node.js and TypeScript microservices that support critical ecommerce journeys. Develop and maintain REST and GraphQL APIs used across web and mobile platforms. Work on high impact areas such as checkout, payments, and core transactional flows. Integrate with external systems including CMS platforms, payment providers, and third party services. Operate in a fast paced, high volume environment where change is constant. Take ownership of streams of work, from technical design through to production support. Contribute to CI/CD pipelines, cloud infrastructure, and overall platform resilience. Your Skills and Experience Strong commercial experience building backend services with Node.js and TypeScript. Hands on experience with microservices architectures and API driven systems. Background working in high traffic, high change environments such as ecommerce, gaming, hospitality, or similar. Experience with cloud platforms, ideally Azure, and modern DevOps practices. Comfortable working with both SQL and NoSQL data stores. A problem solving mindset with the ability to operate effectively in ambiguous situations. Confidence taking ownership without relying on heavy process or close supervision. What They Offer The opportunity to work at genuine scale on systems used by millions of customers. A senior role with clear ownership, influence, and long term progression within backend and platform engineering. How to Apply If you are a backend engineer who thrives in high impact environments and wants to build systems at scale, apply now to find out more.

Principal Data and AI Strategy Consultant London hybrid working, three days on site. Principal £90,000 to £110,000 plus bonus. This is an opportunity to step into a high impact Data and AI Strategy role within a growing consulting practice where strategy, governance and advisory work sit firmly at the centre. You will work closely with senior stakeholders to shape how organisations design, govern and scale AI, including GenAI, without being pulled into hands on build or delivery. The Company They are a well established management consultancy operating across financial services and other highly regulated industries, with a strong reputation for delivering end to end transformation. Their approach focuses on embedding specialist squads into client organisations to drive meaningful change. Data and AI strategy is a key growth area, with increasing demand from C suite leaders looking for clear direction on AI adoption and governance. The Role You will sit within a UK based Data and AI Strategy team, advising senior leaders on how to define, refine and execute AI strategies. The role is advisory led and highly client facing. Key responsibilities include: Defining data and AI strategies aligned to business objectives and regulatory environments Advising on AI governance, GenAI policy and responsible AI frameworks Identifying and prioritising AI use cases based on value, risk and feasibility Assessing organisational readiness for AI and designing future state operating models Leading workshops and stakeholder sessions with senior business and technology leaders Supporting clients in build versus buy decisions without owning technical implementation Contributing to thought leadership, propositions and internal capability building Your Skills and Experience Strong consulting or advisory experience within data, AI or digital strategy Exposure to AI governance, GenAI strategy or operating model design Confidence working with senior stakeholders and translating complex topics into clear narratives Experience in regulated environments such as financial services, energy or similar industries Solid understanding of how consulting engagements are structured and delivered Commercial awareness and storytelling skills rather than deep technical development expertise What They Offer Competitive salary with performance related bonus Private medical insurance and life insurance Pension contribution with enhanced employer matching 25 days annual leave with the option to buy or sell days Hybrid working model with a Shoreditch office base Dedicated business coach and clear progression based on performance rather than tenure No time at level policy How to Apply If you are interested in shaping AI strategy at a senior advisory level within a growing consulting team, apply below!

Senior Frontend Engineer Derbyshire (Hybrid, 3 days onsite) £85,000 to £90,000 This is an opportunity to join a fast growing digital engineering function at a pivotal point in its transformation. With multiple senior hires planned and urgent demand, this role offers real influence over customer facing products, frontend architecture, and engineering standards across a large scale ecommerce platform. The Company They are a major UK based retail and ecommerce organisation undergoing significant digital change. Technology sits at the heart of their strategy, with engineering teams owning core customer journeys across multiple consumer brands. The environment is product led, highly collaborative, and focused on building scalable platforms that support millions of users. Engineering is empowered to shape decisions, not just deliver tickets. The Role You will be a senior individual contributor within frontend focused squads, working on high impact customer experiences. Build and evolve customer facing ecommerce journeys including browse, checkout, payments, and membership. Influence frontend architecture, design systems, and shared standards across squads. Work closely with Product, Design, and Content to shape solutions from discovery to delivery. Act as a technical mentor, supporting frontend engineers across the wider team. Champion performance, accessibility, and quality across production systems. Collaborate with backend engineers, integrating with Node.js services and APIs in a microservices environment. Your Skills and Experience Strong commercial experience with JavaScript and TypeScript in large scale production environments. Deep experience building applications with React, ideally using Next.js. Proven understanding of frontend performance, accessibility standards such as WCAG, and Core Web Vitals. Experience integrating with REST and GraphQL APIs. Comfort working in a modern engineering environment alongside microservices and cloud native platforms. A holistic mindset, understanding how frontend fits into the wider system. Full stack experience with a frontend lean is highly valued. What They Offer The chance to work on high traffic, customer facing platforms with real ownership. Clear progression for senior engineers who want to influence architecture and standards. A collaborative culture with strong emphasis on engineering ownership and quality. How to Apply If you are a senior frontend engineer looking for impact, ownership, and the chance to shape a large scale ecommerce platform, apply now to learn more.

Senior Back-End Software Engineer up to £90,000Nottingham (Hybrid) This is a great opportunity to join a high-growth retail technology organisation where you can take ownership of building scalable, cloud-native backend services that power a global digital platform. THE COMPANY: This is one of the UK's largest retail groups, spanningmajorhigh-street and lifestyle brands. With continued expansion, global partnerships andaperformance-driven culture, the Group offers exposure to a diverse portfolio of brands and the chance to build a career within a large, ambitious commercial environment. THE ROLE: You will take ownership of designing and delivering backend services within a modern MACH-based digital platform (Microservices, API-first, Cloud-Native and Headless). Working closely with product, frontend and platform teams. Key responsibilities include: Designing, developing and maintaining scalable microservices using TypeScript and Node.js Building and supporting GraphQL and REST APIs for internal and external integrations Translating business requirements into robust technical solutions, architecture and documentation Championing code quality, automation, CI/CD and DevOps best practices across the team YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: TypeScript and Node.js development Microservices-based architectures GraphQL and REST API design Working with SQL and NoSQL databases Modern software development practices, including CI/CD, testing and automation THE BENEFITS: You will receive a competitive salary depending on experience, along with a comprehensive benefits package including recognition schemes, wellbeing support, discounted gym memberships, retail immersion days and performance-linked rewards. HOW TO APPLY: Please register your interest by sending your CV to Molly Bird via the apply link on this page.

Senior SEO Executive London, Hybrid Salary up to £33,000 This is a standout opportunity for an experienced SEO professional to take real ownership of organic performance within a fast paced, digitally led retail environment. You will play a key role in shaping SEO strategy, influencing site architecture and content, and driving measurable growth across a large scale ecommerce platform. The Company They are a well established, consumer focused organisation operating at scale within online retail. Digital innovation sits at the heart of their growth strategy, with SEO viewed as a core performance channel rather than a support function. The business encourages autonomy, commercial thinking, and continuous improvement, giving teams the freedom to test, learn, and make impact. The Role Own the day to day optimisation of the SEO channel, working closely with senior stakeholders Identify and implement recommendations to improve organic rankings and traffic Influence website architecture, internal linking, and on page optimisation Partner with content teams to ensure SEO best practice is embedded across category pages, landing pages, and editorial content Conduct technical SEO audits and resolve issues impacting crawlability and performance Use enterprise SEO tools to uncover insights, monitor performance, and spot growth opportunities Support backlink analysis and link building initiatives Your Skills & Experience Strong commercial experience in SEO, either in house or agency side Hands on capability across technical SEO, keyword strategy, and on page optimisation Confidence analysing performance data and reporting clear insights to stakeholders Experience using SEO tools such as Screaming Frog, Botify, SEMrush, or similar platforms Comfortable managing multiple priorities in a fast moving environment A genuine interest in search, digital marketing, and ecommerce performance How to Apply If you are looking to take the next step in your SEO career and make a tangible impact, apply now to learn more about this opportunity

Data Analyst Location: Manchester (Trafford Park, near MediaCity) - Hybrid (2 days in office) Salary: £40,000-£55,000 + benefits (25 days holiday, pension, flexible working) Start Date: ASAP The Company A fast-scaling data technology business working with major names in media, marketing, and research. They provide behavioural data from real devices, enabling evidence-based decisions at scale. With rapid growth underway, the business is building out a central analytics function to support both internal teams and external clients. The Role This is a hands-on data analyst role with broad exposure to product, technical, and commercial teams. You'll work directly with stakeholders, taking half-formed questions and turning them into clear, data-led answers. From uncovering churn metrics to evaluating server performance or understanding how VPNs impact user experience, you'll be the go-to person for actionable insight in a high-growth environment. Key Responsibilities Analyse large, complex datasets to uncover trends and guide decision-making. Translate ambiguous business questions into clear, metric-driven insights. Build and present concise data stories to internal and external stakeholders. Support compliance efforts with robust monitoring and analysis. Develop lightweight automation to improve internal reporting and processes. Provide insights on marketing/media data to identify performance issues. Join client meetings to explain analytics in a clear, confident manner. Skills & Experience Essential: 2+ years' experience in a data analyst or similar role. Strong SQL skills - confident working with complex data structures. Excellent communication skills, able to engage technical and non-technical stakeholders. Self-starter who thrives in ambiguous situations. Ability to prioritise and manage open-ended requests. Strong analytical mindset with commercial awareness. Desirable: Python for analysis and automation. Experience with technical data (servers, VPNs, compliance). Familiarity with marketing/media datasets. Interview Process Initial 30-minute chat with hiring manager. Take-home technical task (data analysis + presentation prep). Final in-person interview (2 hours): culture fit, presentation, and technical deep dive with hiring team. How to Apply Send your CV to Mohammed Buhariwala at Harnham or connect on LinkedIn to learn more.

Location: Hybrid - 2-3 days per week in London Contract Length: 3 months (with potential to extend) IR35 Status: Inside IR35 Overview We are seeking a Tableau Developer with a strong focus on front-end design, UI/UX, and data visualisation to support a strategic insights team within the real estate sector. The role will focus on building high-quality, visually engaging dashboards that help uncover insights from multiple data sources. You'll work directly with the Head of BI to translate ideas into polished Tableau dashboards that balance functionality with aesthetics , including geospatial and advanced visualisation techniques. Key Responsibilities Design and deliver visually rich Tableau dashboards, incorporating geospatial data, advanced graphics, and colour grading. Create dashboards that are both functional and aesthetically impactful ("heart and science"). Optimise dashboards for clarity, performance, and usability with a quality-over-quantity mindset. Collaborate closely with the Head of BI, refining requirements and turning concepts into intuitive, polished outputs. Apply modern design principles and Tableau best practices to enhance storytelling and insight delivery. Support the transition from Power BI to Tableau by building out a new suite of dashboards. Required Skills & Experience Proven expertise in Tableau dashboard development, with strong front-end/UI skills. Experience working with geospatial data and applying mapping/colour grading for impactful visualisation. A strong eye for design, detail, and storytelling through data. Ability to create dashboards without heavy stakeholder interaction-translating requirements from a small BI leadership team. Familiarity with managing data from multiple sources (Excel and others). Excellent communication skills and ability to collaborate in a hybrid environment.

DIGITAL ANALYTICS MANAGER - 12-MONTH FTC UP TO £70,000 + BENEFITS WATFORD - HYBRID, 2 DAYS A WEEK Please note, sponsorship is not available. Applicants must be UK residents. Company A global retail powerhouse with thousands of stores across 9 countries is looking for a Digital Analytics Manager to join its European team. The business continues to invest heavily in digital innovation, with recent app launches and ecommerce expansion shaping its next phase of growth. This is a chance to play a pivotal role in understanding customer journeys across web and app, driving insights that directly impact business performance. The Role This is a hands-on analytics role where you'll own digital data and insights across multiple European markets, with a strong focus on the UK, Germany, and Austria. Sitting within the digital team, you'll manage the flow of GA4 and BigQuery data, build impactful reports, and partner with internal stakeholders and a third-party analytics provider. From measuring app performance to understanding the impact of promotions and website changes, you'll play a central role in connecting digital data with business outcomes. You'll also have the opportunity to influence future app launches and regional strategies, ensuring the right data is captured and optimised for decision-making. Key Responsibilities Own and manage GA4 data and reporting across web and app platforms. Partner with customer analytics, trade, and content teams to deliver insights. Oversee the relationship with a third-party analytics provider. Analyse app and web performance, identifying regional trends and customer behaviour. Evaluate the impact of campaigns, promotions, and seasonal activity (e.g., click-and-collect offers). Investigate the business impact of website issues or incorrect tag management. Provide clear, actionable recommendations to drive customer engagement and business growth. Role Requirements Must-haves: Strong expertise in GA4 and BigQuery. Proven experience delivering digital analytics in a large-scale retail or ecommerce environment. Ability to translate data into actionable insights for senior stakeholders. Credible, engaging communicator with a proactive, problem-solving approach. Experience with BI tools (e.g., Looker). Background in experimentation or A/B testing. Self-starter mindset, with the ability to anticipate challenges and identify solutions early.

Infrastructure Engineer AI Startup Remote (One week per month in Barcelona) Up to £180,000 + Equity Want to help power some of the most advanced AI models being built today? I'm hiring for an Infrastructure Engineer to join a cutting-edge startup developing next-generation AI for tabular data-technology with the potential to transform industries like finance, healthcare, and advertising. You'll work alongside researchers and engineers from the likes of DeepMind and other top AI labs, building cloud infrastructure from the ground up to support high-performance, GPU-intensive workloads at scale. Why You'll Love This Role Highly competitive salary + meaningful equity package ? 100% remote within Europe Work with world-class AI experts on cutting-edge problems Join at an early stage with big growth ahead Access to the latest tools, GPUs, and research infrastructure What You'll Be Doing Design and implement multi-cloud infrastructure (AWS + GCP) optimised for ML workloads Build and manage Kubernetes clusters for GPU training, serving, and SaaS hosting Implement GitOps deployment workflows using ArgoCD Create and manage infrastructure as code with Terraform Set up CI/CD pipelines for infrastructure and application deployment Implement monitoring, observability, and cloud cost optimisation (FinOps) Collaborate with ML engineers to fine-tune infrastructure for large-scale model training What You'll Bring 5+ years in cloud infrastructure / DevOps roles Deep Kubernetes expertise, including GPU workload optimisation Strong AWS and GCP experience Proven skills with Terraform , GitOps tools, and CI/CD (GitHub Actions preferred) Proficiency in Python and scripting for automation Solid understanding of cloud networking, security, and cross-cloud connectivity Experience in monitoring, observability, and cost optimisation ? Nice to Have Experience with ML tooling (MLflow, Kubeflow) Knowledge of FastAPI , Databricks, or Snowflake Exposure to SRE practices or cloud security certifications Familiarity with Prometheus , Grafana , or Datadog Interested? If you want to be part of a world-class AI team at an early stage-where your infrastructure decisions will directly shape the company's success-apply today or reach out for a confidential chat.

DIGITAL ANALYTICS CONSULTANT £55,000-£65,000 + BENEFITS FULLY REMOTE This Digital Analytics Consultant position will give you the opportunity to own the implementation function for an international Digital Experience Consultancy looking to grow out its UK team. THE COMPANY: The company you will be working for is a leading specialist digital analytics consultancy which works with clients and internal teams to execute high standard web analytics and optimisation. This team in particular specialises in the Adobe stack. THE ROLE: As a Digital Analytics Consultant you will be the SME for Adobe Launch, looking at a variety of well-known brands across multiple sectors and will need to: Be a primary point of contact. Be confident in Adobe Launch and setting up Tags Experienced in Javascript Stakeholder management YOUR SKILLS AND EXPERIENCE: A successful Digital Analytics Consultant will have the following skills and experience: Proven commercial experience in Adobe Analytics and Adobe Launch Commercial experience in Javascript Ability to work in a fast-paced environment. THE BENEFITS: You will receive a salary, dependent on experience. Salary is up to £65,000. On top of the salary there are some fantastic extra benefits. HOW TO APPLY Please register your interest by sending your CV to Molly Bird via the apply link on this page.

DATA ENGINEER - WEB SCRAPER LONDON BASED REMOTE UP TO £ 80 K + BENEFITS Harnham is hiring a Web Scraping Data Engineer for an Art / Tech Start-up. This role includes designing, developing, and maintaining data scraping pipelines. THE COMPANY: This role is with an Art-Tech Start-up that is investing heavily in its data capabilities. This company recently had another round of funding and they are looking for someone to join their inclusive and collaborative team. You would be joining a cross-functional team of 10 different consultants across Data Engineering, Data Science, and Data Analysts and you will report to a Lead Data Engineer. THE ROLE: As a Web Scraping Data Engineer, you will be responsible for designing, developing, and maintaining data scraping pipelines to collect and analyse data from various sources. You will work closely with our data scientists, developers, and product teams to provide critical insights and information that will help drive our business decisions. We are looking for a candidate with a strong background in data engineering and web scraping techniques. The ideal candidate will have experience with Python, SQL, and data scraping tools such as BeautifulSoup and Scrapy. Additionally, the ideal candidate should be able to design and implement automated testing and quality control procedures to ensure that the data being collected is accurate and reliable. HOW TO APPLY: Please register your interest by sending your CV to Ewan Heyworth via the apply link on this page.