Victrays

Overview Data Scientist (Claims) at marshmallow - London About Marshmallow We build financial products that accelerate the economic freedom for people who move across borders. We started with car insurance - insuring over a million drivers - and we're scaling beyond. Tens of millions of people move countries each year, facing overlooked financial challenges. Our future is in building financial products around their needs to positively impact their lives. How we work We're really proud of the culture we've created. We push for progress every day, because we know that we'll only hit big milestones by taking lots of smaller steps. We're always open to helping our team mates, sharing our ideas, experience and knowledge to solve problems together. We take risks, think creatively and experiment relentlessly to meet our customer's needs, and never pass blame when things go wrong. We encourage people at all levels to take ownership of their work, and to be bold in challenging how we do things. Everyone has a voice and the opportunity to make an impact. Autonomy and ownership are supported with clear direction, in-depth planning twice a year, and clear goals that flow from top to bottom. Most work rolls up into three tribes: Acquisition, Retention & Claims. Each tribe has multiple teams embedded in it, working cross-functionally to do great work. We're excited for the challenges ahead and welcome you to explore our Culture Handbook to learn more. Marshmallow aims to make insurance more accessible and affordable for as many people as possible. That means harnessing technology, automation and intelligent decision making to serve customers better and cheaper than traditional insurers. Data, analytics and the Claims Tribe We're here to generate insights and actions from all the data we can get our hands on. This includes analytics, predictive modelling, and prescriptive recommendations. We deliver high impact work to the business, focusing on high risk, high reward projects, and ensuring all decisions are data driven. We're now looking for a Data Scientist to join our Claims Tribe , where we are on a mission to transform how we handle claims by using data and AI to make faster and smarter decisions that improve outcomes and reduce costs. This is a critical area of the business that directly affects our loss ratio, operational efficiency and customer satisfaction. You will build intelligent systems that help us solve the right claims at the right time for the right cost by combining predictive models, agentic AI workflows and automation to guide and accelerate decisions across the claim lifecycle, including decisioning models, fraud detection, prioritisation and workflow logic. There are high impact problems to solve, and you will be part of a team that is actively redefining what great looks like in claims handling through the use of frontier AI tools and human in the loop systems. What you'll be doing Owning and delivering data science solutions that improve how we triage, prioritise and resolve claims with measurable impact on cost, speed and customer experience. Building and deploying predictive models that support automated decisions or enable better human ones (e.g. risk triage, fraud signals, case prioritisation, exception handling). Collaborating with engineers, product managers and claims experts to embed your models into our internal systems and tools. Supporting an experimentation-first mindset with A/B tests and analytics to prove business value. Contributing to the definition of KPIs and analytical processes that help us evaluate and continuously improve claims performance. Exploring opportunities to apply emerging AI technologies such as agentic systems and large language models to streamline workflows and assist decision makers in real time. Who you are You are naturally curious and hands-on, all things data and ML related. You have a commercial mindset and focus on driving meaningful business impact. You communicate clearly across both technical and non-technical teams. You care about the customer journey and want to make hard moments easier. You're pragmatic and outcome-oriented, not wedded to complexity for its own sake. You enjoy solving real operational problems with cutting edge tools, especially where human judgment and automation intersect. You value simplicity, clarity, and strong data foundations. What we're looking for from you Experiences that are essential Experience building and deploying ML models that deliver measurable business results. Understanding of how to evaluate performance within risk decisioning, including performance trade-offs and operational considerations. Familiarity with A/B testing and measuring model impact. Proficiency in Python and SQL. At least 2+ years of professional experience in data science or similar roles. Experiences that will help you Experience in insurance, operations, or other complex service environments. Experience working with unstructured data (e.g. documents, free text, images). Knowledge of MLOps best practices and model monitoring. Experience with experimentation frameworks and KPI tracking. PhD or masters degree from a top institution. Experience designing, building and deploying Generative AI applications or Retrieval-Augmented Generation (RAG) systems in operational or customer facing environments. Perks of the job Flexi-office working - Spend 2-3 days a week with your team in our new collaborative London office. The rest is up to you! Competitive bonus scheme - designed to reward and recognise high performance Flexible benefits budget - £50 per month to spend on a Ben Mastercard, for subscriptions, classes, or other needs Sabbatical Leave - Get a 4-week fully paid sabbatical after being with us for 4 years Work From Anywhere - 4 weeks work from anywhere to use, with no need to come to the office Mental wellbeing support - Access therapy and mental health sessions Learning and development - Personal budgets for books and training courses, plus 2 days a year to further your skillset Private health care - Vitality benefits Medical cash plan - Support for dental, optical and physio costs Tech scheme - Get the latest tech for less Plus all the rest: 33 days holiday, pension, cycle to work, team socials Our process We break it up into a few stages: Initial call with our Talent Acquisition Partner - 30 mins; a past experience interview with the hiring manager - 60 mins; a technical interview - 90 mins; a culture interview - 60 mins. Everyone belongs at Marshmallow We are committed to hiring without judgement, prejudice or bias and encourage everyone to apply. Diversity in identity, race, ethnicity, sexual orientation, age or background does not affect how we process applications. We're building an inclusive culture that empowers our people to do their best work and feel they belong. Recruitment privacy policy We take privacy seriously. Our Recruitment privacy notice explains how we process and handle your personal data. To find out more please view it here.

A leading insurance technology company is looking for a Data Scientist to join their Claims Tribe in London. The successful candidate will be responsible for improving claims management through data science solutions, predictive models, and collaboration with cross-functional teams to enhance operational efficiency. Applicants should have strong skills in Python, SQL, and relevant experience in data science. This role offers flexible working arrangements, a competitive bonus scheme, and comprehensive mental wellbeing support.

A leading streaming platform is looking for a Senior Software Engineer (Backend) in Manchester. The role involves designing scalable backend services, maintaining robust APIs, and working collaboratively across teams. Ideal candidates will have experience with Java, Python, Docker, Kubernetes, and a degree in computer science or a related field. This position offers comprehensive benefits that support employee well-being and a dynamic work culture focused on innovation and collaboration.

Senior Software Engineer, Mobile Cloud - Manchester, United Kingdom Teamwork makes the stream work. Roku is changing how the world watches TV Roku is the TV streaming platform in the U.S., Canada, and Mexico, and we've set our sights on powering every television in the world. Roku pioneered streaming to the TV. Our mission is to be the TV streaming platform that connects the entire TV ecosystem. We connect consumers to the content they love, enable content publishers to build and monetize large audiences, and provide advertisers unique capabilities to engage consumers. From your first day at Roku, you'll make a valuable - and valued - contribution. We're a fast-growing public company where no one is a bystander. We offer you the opportunity to delight millions of TV streamers around the world while gaining meaningful experience across a variety of disciplines. About The Role Millions of people around the globe rely on our products every day because they "just work," seamlessly integrating into users' lives. Achieving that intuitive user experience isn't accidental-it's crafted by dedicated teams committed to simplicity and clarity. We're seeking a Senior Software Engineer (Backend) who excels at building scalable, reliable services. Our Roku Mobile Backend team designs and implements robust backend services powering our mobile apps, ensuring optimal performance, low latency, and seamless scalability. If you're passionate about backend engineering and thrive on delivering innovative mobile-cloud solutions, we'd love for you to join us. We collaborate closely with client-side engineers, other backend teams, and product management, iterating rapidly-from prototypes and A/B tests through to global releases. About The Team You will be joining a talented, high-performant backend team with a history of delivering quality products. We are looking for someone who can help us keep up this pace and continue delivering high-quality services as we grow. What You'll Do Design and develop scalable, high-performance backend services powering Roku mobile apps. Build and maintain robust APIs and microservices integrating seamlessly with mobile clients and cloud infrastructure. Develop and optimize a highly efficient auto-scaling platform utilizing Docker containers and Kubernetes orchestration. Ensure reliability and uptime of backend systems through comprehensive monitoring, testing, and automation. Troubleshoot and resolve complex technical challenges within production environments swiftly and effectively. Continuously assess and implement emerging technologies to boost system performance and developer productivity. Collaborate cross-functionally with product, design, frontend, and other backend teams, driving seamless integration, consistency, and exceptional user experiences. Expertise of backend software engineering Bachelor's or master's degree in computer science, engineering, or related field (or equivalent experience). Strong proficiency in backend languages like Java or Python. Proficiency in using AI tools (e.g., GitHub Copilot, ChatGPT) and experience with prompt engineering Demonstrable experience designing, building, and maintaining RESTful APIs, utilizing HTTPS, JSON, and WebSocket. Hands-on expertise developing and operating large-scale cloud services using Docker and Kubernetes. Proven capability in writing and maintaining comprehensive automated unit and integration tests. Deep understanding of distributed systems, microservices architecture, and database technologies. Familiarity with CI/CD pipelines, Test-Driven Development (TDD), and automation frameworks. Skilled in production system monitoring, troubleshooting, and issue resolution. Exceptional problem-solving skills focused on delivering efficient, practical solutions. Strong communication abilities, adept at working effectively with both technical and non-technical stakeholders. A proactive and driven mindset, capable of independently managing tasks from inception to completion. Ability to thrive in a dynamic, fast-paced environment, adeptly managing shifting priorities. Roku is committed to offering a diverse range of benefits as part of our compensation package to support our employees and their families. Our comprehensive benefits include global access to mental health and financial wellness support and resources. Local benefits include statutory and voluntary benefits which may include healthcare (medical, dental, and vision), life, accident, disability, commuter, and retirement options (401(k)/pension). Our employees can take time off work for vacation and other personal reasons to balance their evolving work and life needs. It's important to note that not every benefit is available in all locations or for every role. For details specific to your location, please consult with your recruiter. The Roku Culture Roku is a great place for people who want to work in a fast-paced environment where everyone is focused on the company's success rather than their own. We try to surround ourselves with people who are great at their jobs, who are easy to work with, and who keep their egos in check. We appreciate a sense of humor. We believe a fewer number of very talented folks can do more for less cost than a larger number of less talented teams. We're independent thinkers with big ideas who act boldly, move fast and accomplish extraordinary things through collaboration and trust. In short, at Roku you'll be part of a company that's changing how the world watches TV. We have a unique culture that we are proud of. We think of ourselves primarily as problem-solvers, which itself is a two-part idea. We come up with the solution, but the solution isn't real until it is built and delivered to the customer. That penchant for action gives us a pragmatic approach to innovation, one that has served us well since 2002. By providing your information, you acknowledge that you have read our Applicant Privacy Notice and authorize Roku to process your data subject to those terms.

Victrays is seeking a highly motivated Backend Python Engineer to scale our product and infrastructure. This role involves designing robust backend services and collaborating with engineers to deliver quality customer experiences. The ideal candidate has 4+ years of experience, strong knowledge of Python, RESTful APIs, and a passion for sustainability. We offer 28 days of annual leave, a learning allowance, and a commitment to diversity and inclusion.

Senior Python Engineer at CarbonChain - London, UK or New York City, USA About Us Do you want to work on the most pressing problem of our generation? Do you have experience building great products and know what it's like to roll up your sleeves and execute well, while building a company around you for the long term? If you truly know what it feels like to fly the plane while trying to build it, we want to hear from you. We're looking for the best software engineers in the world to join a growing series A startup. At CarbonChain we see the climate crisis as a transformative opportunity for the global economy, and a rewarding career opportunity for those excited to take on the challenge in a rapidly growing market. Decarbonizing the economy requires a granular, real-time view of where emissions come from and how they might be reduced. We've built software to automate the carbon footprinting of supply chains so their emissions can be measured and managed down. Banks, traders, and manufacturers use our product to tame the complexity of international supply networks, identify the most carbon-intensive parts, and find greener alternatives. Having developed technology which is significantly ahead of other solutions, we are now investing heavily in market adoption. To join CarbonChain, you'll need a proven career path in software engineering building great products that delight customers. Our company is made up of passionate people with expertise ranging from oil refining to deep learning but we know that there's a lot we don't know, and we're hoping you can help fill that gap. About the Role We're looking for a highly motivated and experienced Backend Python Engineerto help scale our product, infrastructure, and core data pipelines. You'll play a key role in shaping the technical foundation of our platform and working with a collaborative team of engineers, product managers, and sustainability experts. What You'll Do Design and implement robust, scalable backend services using Python (FastAPI preferred). Build and maintain core APIs that power customer workflows and third-party integrations. Work with data engineering to ingest, transform, and expose environmental and operational datasets. Ensure high system reliability and performance by writing testable and maintainable code. Collaborate closely with the product and design teams to iterate quickly on features. Implement best practices for code quality, CI/CD, observability, and infrastructure-as-code. Participate in technical architecture discussions and make foundational decisions. Requirements 4+ years of backend engineering experience, with a strong focus on Python. Proficient in developing RESTful APIs and integrating with external services. Solid experience with PostgreSQL, Docker, and cloud platforms. GCP preferred. Familiarity with distributed systems, background processing (e.g., Celery), and message queues (e.g., PubSub). Experience working in early-stage startups or fast-paced environments. A product mindful approach: you think about how your work impacts users. Passion for climate solutions and a genuine interest in sustainability. Ability to work in our London office 3 days per week in Camden Market. Nice to Have Experience with data intensive applications or carbon accounting platforms. Knowledge of carbon footprint methodologies or ESG reporting. Contributions to open source projects or technical blogs. What we're offering 28 days of annual leave Home office set up allowance of £500 £2,000 annual learning allowance Generous parental leave policy Team lunches once a week in the office Subsidized gym classes, office gym, and cycle to work scheme. We're striving to build a diverse team and we would love to hear from applicants from backgrounds less frequently represented in technology, be that in terms of gender, race, or professional background. CarbonChain values diversity and inclusion and welcomes applications from candidates with diverse backgrounds. If you think your skills and experience match what we're looking for and you'd like to join the next Climate Tech industry unicorn, please get in touch!