Senior Product Designer - Claims

Marshmallow

We’re on a mission to make migration easy. We started building Marshmallow in 2017. Since then, we’ve grown from 3 to 700+ people, gained unicorn status, raised ~£140M over three funding rounds, turned profitable, insured millions of drivers and lent millions in car loans. But we’re only just getting started. Our goal is to become one of the largest financial services providers in the world. Over the next 10 years we’ll grow exponentially, not only by scaling our existing products, but also by building new ones. To achieve our goals we need incredibly ambitious, commercially driven people who never settle for ‘good enough’. Marshmallowers are hungry for autonomy and ownership, and would rather improve than coast. Everyone raises standards and has an impact, with a focus on collective success over self-interest. We’ve created an environment where curious, tenacious people win and grow together. If that sounds motivating, this could be the place for you. (HYBRID - 3 DAYS A WEEK IN OUR LONDON OFFICE) ENGINEERING AT MARSHMALLOW Our engineers are at the heart of the solutions. They work on product builds from start to finish, solving lots of challenges to help us build fast, and scale up! Our engineers cover a range of skills across frontend, backend, full stack, iOS and Android, and work alongside designers, data scientists, researchers and product managers within our product teams. Our product teams include: the Renewals team, Telematics team and the Claims team (to name a few!) Each team sets its own roadmap and QBRs, and actively pushes our codebase forward. Learn more about our teams and how our engineers work here! THE TEAM YOU'D BE JOINING We're looking for a driven and curious senior Android engineer to join the New Financial Products Team as we embark on one of Marshmallow's most ambitious chapters. In 2026, the team is focused on transforming Marshmallow from a car insurance and car finance provider into a high-engagement financial companion for migrants in the UK — and your work will sit at the heart of that mission. This role directly supports our foundational strategic pillar for 2026: building the product and data capabilities that will unlock multi-product growth, deeper customer understanding, and new revenue streams over time. What you'll be doing * Join a team operating in new territory for Marshmallow. You'll help define what to build, pivot when priorities shift, and take initiative without waiting to be asked * Own significant parts of our Android codebase end-to-end, establishing yourself as the go-to expert for core components and systems while actively raising the technical bar for those around you * Shape how we build, not just what we build. You’ll partner with engineering and product leadership to define the technical roadmap and influence architectural decisions that will underpin Marshmallow's next chapter * Design and ship high-quality Android solutions using modern practices (Jetpack Compose, MVVM/MVI, Kotlin Coroutines, robust CI/CD) — embracing AI tooling to accelerate development, and writing code that is simple, well-tested, and built to scale * Lead medium to large projects across multiple engineers, breaking ambiguous problems into clear milestones and driving delivery with the kind of ownership that others can depend on * Drive improvements to tooling, processes, and engineering culture proactively, using data to cut through ambiguity and making the team measurably faster and higher quality over time Who are you * You thrive under pace and know how to make smart trade-offs. You weigh up risk, cut through noise, and keep delivery moving without sacrificing quality * You don't wait for problems to come to you. You spot them early, solve them proactively, and bring others along with you * You embrace change and actively seek out new tools and approaches to raise the quality and pace of what your team ships * You build trusted relationships naturally, working across product, design, and backend teams with a collaborative mindset and a shared sense of ownership over outcomes * You bring your engineering perspective into product conversations, using technical insight to challenge assumptions, spot opportunities, and help shape decisions before they become requirements What we're looking for from you * Strong commercial Android development experience, with a strong command of Kotlin and hands-on experience with Jetpack Compose and Kotlin Coroutines * A track record of shipping high-quality apps to the App Store and Google Play Store * Experience working in cross-functional teams alongside product, design, and fellow engineers to align on objectives and drive outcomes * A commitment to writing maintainable, well-tested code that enables safe and efficient development practices * Collaborates with designers and Product Managers early and often to influence how ideas take shape, ensuring decisions are grounded in real-world mobile constraints and user experience. Our Tech Stack * All new features are built in Kotlin, Jetpack Compose and Coroutines * Access to Claude Code to help engineers move faster on boilerplate, debugging, and code review. * Code is organised into local Gradle feature modules to help keep it maintainable and scalable. * We use automation as much as possible when it comes to testing our app, writing unit tests for business logic, snapshot tests for UI and automated UI tests for user interaction. * Our continuous integration tool of choice is Bitrise * We review each other's code using GitHub and automate as much of our code styling as possible using tools like lint and detekt. We are committed to fostering the professional growth of our team members and are open to coaching Android engineers who are interested in expanding their skill sets in backend or full stack technologies. We believe in providing a supportive environment where continuous learning is encouraged, and we are happy to facilitate training and mentorship opportunities to help you achieve your career goals. PERKS OF THE JOB * Bonus scheme designed to reward high performance * Private medical insurance with Vitality, mental health support with Oliva * Personal learning budget and 2 dedicated L&D days a year * Monthly flexible benefits budget to spend as you choose * 25 days holiday plus bank holidays * 4 weeks Work From Anywhere per year OUR PROCESS * Initial call with a member from our Talent Team (30 mins) * Past Experience interview with Hiring Manager & GM of New Financial Products (30-45 mins) * Android technical skills case study and interview with a couple of the team (120 mins) * Culture interview (60 mins) We’ll let you know if you’re invited to an interview or not. But, as a small team with a lot of applications to consider, we can’t give individual feedback on each application. Diversity of thought We know the best ideas come from having different perspectives in the room - and we're committed to hiring fairly, regardless of background, identity or experience. If you see yourself in this role, we'd encourage you to apply. Diversity of thought We know the best ideas come from having different perspectives in the room - and we're committed to hiring fairly, regardless of background, identity or experience. If you see yourself in this role, we'd encourage you to apply.

Multiverse

Multiverse is the upskilling platform for AI and Tech adoption. We have partnered with 1,500+ companies to deliver a new kind of learning that's transforming today’s workforce. Our upskilling apprenticeships are designed for people of any age and career stage to build critical AI, data, and tech skills. Our learners have driven $2bn+ ROI for their employers, using the skills they’ve learned to improve productivity and measurable performance. In April 2026, we announced $70 million in strategic funding, led by Schroders Capital, with participation from StepStone Group, Lightspeed Venture Partners and General Catalyst. At an increased valuation of $2.1bn, the round makes us Europe’s first EdTech double unicorn. But we aren’t stopping there. With a strong operational footprint and 800+ employees, we have ambitious plans to continue scaling. We’re building a world where tech skills unlock people’s potential and output. Join Multiverse and power our mission to equip the workforce to win in the AI era. WHAT WE NEED: At Multiverse, the models we build don't just sit in notebooks - they drive the decisions that shape our business every day. From predicting learner outcomes to forecasting operational demand and optimising how we allocate resources, this work sits at the very core of how we run the company. As a Senior Data Scientist, you'll own these models end to end. You'll develop a deep understanding of how Multiverse operates across our customer, learner and operational domains - and translate that understanding into rigorous, production-grade ML models that genuinely move the needle. To be successful, you'll be comfortable getting hands-on with pipelines and infrastructure - and unafraid of the statistical rigour that serious modelling demands. You'll work closely with stakeholders across every part of the business - helping them ask better questions, understand the answers, and act on them with confidence. Our leaders will make multi-million dollar decisions based on your recommendations, and our AI-powered product will decide how to support learners based on your models. You'll sit within our Data & Insight team, working day-to-day alongside Data Engineers, Data Product Developers and Insight Analysts. WHAT YOU'LL FOCUS ON: Business Understanding & Problem Definition * Building genuine expertise in how Multiverse operates across customer, learner and operational domains - becoming a trusted thought partner * Translating complex and often ambiguous business questions into well-scoped modelling problems with clear success criteria * Identifying where predictive, forecasting or optimisation models can have the greatest business impact, and prioritising accordingly Modelling & Statistical Analysis * Designing, developing and iterating supervised and unsupervised ML models that predict, forecast and optimise across the business * Applying rigorous statistical methods to ensure models are robust, unbiased and genuinely causal wherever causal claims are being made * Developing a deep understanding of our data landscape - its lineage, quirks, and limitations - and designing approaches that account for them * Monitoring and refining models over time, ensuring they remain accurate and relevant as the business evolves Data Engineering & Infrastructure * Collaborating closely with Data Engineers to build and maintain the data pipelines and ML infrastructure needed to develop and deploy your models * Productionising models to run reliably at scale, adhering to software engineering best practices - including version control, CI/CD and vulnerability management * Evaluating and implementing scalable approaches to data collection and processing, ensuring robust practices are in place WHAT WE'RE LOOKING FOR: Required * 5+ years of data science/machine learning experience, with a proven track record building and deploying models that drive real business decisions * Deep expertise in predictive modelling, forecasting and/or optimisation - with strong command of the underlying statistical principles * Strong proficiency in Python and core ML libraries (e.g., NumPy, Pandas, Scikit-Learn, xgboost, shap) * Advanced working knowledge of SQL * Hands-on experience with data pipelines and ML infrastructure * Experience working within AWS (ideally using Sagemaker) and/or Azure * Comfort working across our data stack - inc Airflow, Snowflake * Experience with version control and CI/CD practices (ideally using GitHub) * Rigorous attention to statistical validity - comfortable challenging assumptions and defending methodology * Understanding of best practices in data protection and information security Desirable * Experience with causal inference methods (e.g., diff-in-diff, instrumental variables, propensity score matching) * Experience with dbt for data transformation * Knowledge of infrastructure as code tools (e.g. Terraform) * Strong professional and/or academic background within a highly quantitative discipline (e.g. statistics, mathematics, physics or economics) Benefits * Time off - 27 days holiday, plus 5 additional days off: 1 life event day, 2 volunteer days, 2 company-wide wellbeing days (M-Powered Weekend) and 8 bank holidays per year * Health & Wellness- private medical Insurance with Bupa, a medical cashback scheme, life insurance, gym membership & wellness resources through Wellhub and access to Spill - all in one mental health support * Hybrid work offering - for most roles we collaborate in the office three days per week with the exception of Coaches and Instructors who collaborate in the office once a month * Work-from-anywhere scheme - you'll have the opportunity to work from anywhere, up to 10 days per year * Space to connect: Beyond the desk, we make time for weekly catch-ups, seasonal celebrations, and have a kitchen that’s always stocked! Our Commitment to Diversity, Equity and Inclusion We’re an equal opportunities employer. And proud of it. Every applicant and employee is afforded the same opportunities regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender, gender identity or expression, or veteran status. This will never change. Read our Equality, Diversity & Inclusion policy here. Our Commitment to Safeguarding Multiverse is committed to safeguarding and promoting the welfare of our learners. We expect all employees to share this commitment and adhere to our Safeguarding Policy, our Prevent Policy and all other Multiverse company policies. Successful applicants will be required to undertake at least a Basic check via the Disclosure Barring Service (DBS). For roles that will involve a Regulated Activity, successful applicants must also undergo an Enhanced DBS check, including a Children’s Barred List check and a Prohibition Order check. Roles involving Regulated Activity may interact with vulnerable groups, therefore are exempt from the Rehabilitation of Offenders Act 1974 meaning applicants are required to declare any convictions, cautions, reprimands, and final warnings. Providing false information is an offence and could result in the application being rejected or summary dismissal if the applicant has been selected, and possible referral to the police and the DBS.

Caribou

ABOUT CARIBOU International Tax is a rigged system. Tax rules get ever more complicated, compliance gets more expensive, and the Big Four controls the expertise. They charge fees that only giant companies can afford, while smaller businesses are left flying blind. Caribou is a tax platform designed to make international tax accessible to every global business. We're fixing Transfer Pricing first, where one million businesses are in need, but only ten thousand experts exist. R&D relief is our next product. Our backers include Y Combinator, Accel, Lakestar and angel investors who were founders or executives of leading companies in London and San Francisco. ABOUT THE ROLE Caribou is building a new R&D tax offering at the intersection of transfer pricing and innovation funding — and we're looking for a Senior Manager to own it end-to-end. This isn't a pure advisory role. You'll be working alongside our engineering team to productize the service: systematising claim processes, building tooling, and turning what used to be manual consulting work into something scalable. The mix of hands-on R&D tax advisory with product instinct is what makes this different from a standard tax consultancy position. We're looking for someone who's been in the trenches with HMRC and/or the IRS on R&D claims, with a passion for building things that don't exist yet. You'll report directly to our Head of Tax, James Boreham, and have real ownership of the vertical from day one. IN THIS ROLE, YOU WILL * Liaise directly with customers to assess R&D eligibility and understand their business. * Own the end-to-end claim process, from notification of intent to claim through advance assurance, drafting, submission, and defending claims under enquiry. * Translate your real-world claims experience into rules, checklists, and logic that can be built into an automated product. * Identify what proof and documentation a claim actually needs to withstand scrutiny, and work with the team to design data capture that gets it right the first time. * Explain R&D concepts to non-specialists, ranging from founders to operations leads, to accountants. * Coordinate with a customer's other advisors, including bookkeepers, lawyers and other tax experts. * Shape the R&D product itself - pricing, scope, and what should be automated versus handled by a specialist. * Determine a customer's reporting obligations and build the workflows that generate the necessary documents. REQUIREMENTS FOR THE ROLE * Meaningful hands-on experience with HMRC and/or IRS R&D claims, including defending claims under enquiry * Deep practical understanding of what proof and evidence a tax authority actually requires, beyond the written guidance * You take ownership and enjoy driving multiple projects involving a wider range of stakeholders * Comfortable working in a fast-paced and dynamic environment with ambiguous and rapidly evolving priorities BONUS POINTS * Experience across both UK and US R&D regimes * Startup experience PERKS & BENEFITS (FOR UK-BASED FULL-TIME EMPLOYEES) * Competitive salary * Generous EMI options * 100% book subsidy * Pension * Health Insurance * Custom WFH equipment setup London-based, hybrid.