Product Engineer

Anima

I quit medicine because I kept watching patients die needlessly, for avoidable reasons. In almost every case, the science and the clinicians were fine. It was the system around them that failed: the way information moved, the way decisions got routed, and the way fragmented teams and fragmented data turned solvable problems into tragedy. Our mission is human wellbeing, and we're focusing on the breakthrough technology of personalised medicine. Since the beginning, our proprietary insight has always been that the company to create a true active learning data engine with a loss function against human wellbeing would be the one to crack it, becoming one of the most impactful companies in the world as a result. We're now in 1,100+ clinics, across 4 product lines, serve >20% of the UK population, and have solved >5.7 million patient cases in the past 12 months alone, saving an estimated 8,600 lives. We are cash flow positive, growing fast, and have a tight crew of ~35 people. Multiple trillion-dollar companies will be built in healthcare over the next two decades, and we intend to be one of them. We have a knights of the round table culture with a flat hierarchy, where we empower builders to have outsized impact on millions of lives, and where we collaboratively converge on the optimal action without dogma or ego. We're all here to serve a greater mission than ourselves. The closest analogy for our culture is probably Firefly (the TV series): a small crew on a ship at the frontier, each person exceptional in a specific way, deeply loyal to each other and the mission, resourceful under constraints, and having a genuinely good time doing something that matters. We're carefully curated, lean, and wholeheartedly in. If you want your skills to be at the highest possible stakes, you belong at Anima. Your work here will save lives. - Shun Long before the "vertical AI" craze, we were obsessed with active reinforcement learning—a niche field in 2021 that the world, pre-ChatGPT, largely ignored. Our trajectory has been unwavering since our YC application: achieving the "holy grail" of personalized medicine and deep phenotyping. This is powered by our proprietary active learning architecture - a system we codified in a 2021 patent that anticipated the Sparse Mixture of Experts (MoE) and active learning loops now foundational to modern LLMs. While others are just arriving at the party, we’ve spent years executing a plan to build what is now one of the world’s largest, highest-quality labeled datasets. We’re looking for someone who * Has a track record of relentless shipping. * Has proven ability to navigate ambiguity and tackle novel technical challenges from conception to production. * Has strong CS Fundamentals. A deep understanding of data structures, algorithms (e.g., breadth-first search), and first-principles thinking to solve complex product problems. * Is expert-level in TypeScript (TS). Proficiency in building type-safe, scalable applications. You are a full-stack expert in the JavaScript/Node.js ecosystem with a pragmatic approach to tech debt and tool selection. * Has hands-on expertise with React, Angular, or Node.js, with the ability to move between frontend and backend as needed. * Has experience architecting on AWS (specifically Lambda, DynamoDB, SQS, and CloudFormation) or a proven "hungry to learn" mindset regarding serverless infrastructure. * Is disciplined towards best practice version control, CI/CD and code extensibility. Values interface safety through dimensionality reduction at interfaces. * Is obsessive about UX and optimises for this over arbitrary technical goals. * Is driven, impatient to grow and wants their shot to change the world. We hire at all levels: our team has new grads and product leaders with 20 years experience. What to expect in the role * You’ll work with an incredibly smart team. Like Michael who built a working CPU from logic dates at age 16 and co-founded YC-backed Embark Trucks, the first self-driving vehicle on Canadian roads. Or Souradip, who built an acoustic fall detector using on-device deep learning; he’s also an MB/PhD from Cambridge who’s published in top medical journals. * You’ll own your projects end to end and ship fast. Like Alex who built ‘Slack for medical teams’ supporting 1000s of channels per organisation and a real time single source of truth for patient data in 4 weeks. Or Dennis who built and shipped a lightning fast cloud document library for clinics in a few days with <100ms traversals through preloading. * You’ll work on a well-established stack that’s already highly scalable, cost effective, secure and performant with minimal to zero ops. * You’ll learn new technologies; whatever is needed to solve the problem. We are tech agonistic, and collectively choose the best tools for the job. We’re constantly looking to maximise our productivity and minimise what we call “discounted dev time cost” for shipping features. Our current stack We have 2 separate fully functional web apps in prod: one for clinical users and one for patients. Angular, React and Electron, Mixpanel/Posthog for analytics, a fully serverless backend in AWS (Cognito, Appsync GraphQL, Lambda, DynamoDB). We have good functional & unit test coverage and CI/CD.

Kota

ABOUT KOTA Kota is making insurance and retirement benefits as accessible as modern software. We do this across the Kota Platform - the world’s first fully integrated benefits platform and Kota Embed - our embedded insurance and retirement product for platforms. Our mission is to make insurance and benefits more accessible and delightful to this generation of employees. Kota was started in 2022 and has raised over €20m from Europe’s top technology investors, including Eurazeo, EQT Ventures, Northzone, Frontline, and angels, including Romain Huet, formerly of Stripe, now Open AI, and David Clarke, formerly of Workday. The companies our investors have previously backed or built include Spotify, Airbnb, Klarna, Truelayer, Snapchat, Workday, Personio, Workvivo, Pointy, Workable, Wayflyer, and more. THE ROLE As a Senior Product Engineer (Backend) on the Kota Embed team, you’ll play a central role in shaping the APIs and SDKs that power embedded insurance and retirement benefits for platforms around the world. This is not just about writing code - it’s about designing resilient systems, solving complex product challenges, and creating developer-first experiences that our customers rely on to serve their employees. You’ll partner closely with designers, and engineers, integrations team, and benefit experts across Kota to turn ideas into reliable, scalable, and secure products. In this role, you’ll be expected to take ownership end-to-end from technical architecture and system design, to incident response and continuous improvement of our developer-facing APIs and docs. We’re looking for someone who thrives at the intersection of product thinking and engineering craft - an engineer who is as motivated by the “why” as they are by the “how,” and who wants to leave a lasting impact on how benefits are delivered globally. An engineer who obsesses over developer experience. WHAT YOU'LL DO Being a part of our embed team, you will be responsible to * Drive innovation: Build and enhance products to scale Kota’s API and embed products. * Collaborate for impact: Work closely with teams across Kota to refine procedures, ensuring excellent customer experiences and operational efficiency. * Own incident management: Serve as an incident responder for technical issues, fostering a blameless culture of learning and iterating for improvement. * Architect for the future: Research, design, and implement enhancements that strengthen our product and processes. A glimpse into your week might include: * Architecting and building new features, for our customer facing APIs and SDKs * Transforming inefficient internal workflows into self-service features that delight customers and save time. * Leading technical efforts to resolve customer-reported issues as part of the incident response team. WHAT WE'RE LOOKING FOR * Experience: 8+ years in building backend systems with expertise in: * .NET (we use latest 8+), SQL databases, ORM frameworks. Automated test frameworks * Cloud experience with Azure/AWS * Experience with building API products in fintech, payroll, or benefits is a plus. * You thrive in collaborative environments and enjoy solving complex challenges. * Experience collaborating directly with product teams and designers, and a proven track record of delivering value to customers or users. * Availability: At least 5 hours of overlap with GMT working hours. AND OF COURSE.... YOUR EMPLOYEE BENEFITS! * Competitive salary and equity in a fast-growing start-up * Health Insurance contribution via Kota. * Access to a Workplace Pension with matched contributions (depending on location) * WFH stipend to support your home office needs. * Group Life Assurance via Kota. * Generous PTO - work hard and take the time you need. * Annual, company-wide offsite. OUR HIRING PROCESS * Introductory Call (30 minutes): Meet one or two members of our product team to learn more about Kota and the role. * Technical Interview (1 hour + 1 hours): A collaborative and open-book session with two of our engineers split into two sessions. * Call with Founders (30 minutes): We are a small but growing team and we would want share our vision with you and hear your thoughts. * Final Response: We'll follow up promptly with next steps. We are an equal-opportunity employer and value diversity at our company. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Kota

About Kota: Kota is making insurance and retirement benefits as accessible as modern software. We do this across the Kota Platform - the world’s first fully integrated benefits platform and Kota Embed - our embedded insurance and retirement product for platforms. Our mission is to make insurance and benefits more accessible and delightful to this generation of employees. Kota was started in 2022 and has raised €7.6m from Europe’s top technology investors, including EQT Ventures, Northzone, Frontline, and angels, including Job Van Der Voort of Remote, Romain Huet, formerly of Stripe, now Open AI, and David Clarke, formerly of Workday. The companies our investors have previously backed or built include Spotify, Airbnb, Klarna, Truelayer, Snapchat, Workday, Personio, Workvivo, Pointy, Workable, Wayflyer, and more. Role Overview We’re hiring a Senior Engineer to join Kota’s Customer Platform team — the squad responsible for the product our customers actually use to offer and manage benefits. This is the heart of Kota: the app where employers and employees interact with our health, pension, and insurance services. (Note: This is not a platform-as-a-service role or internal tools team. The “Platform” in this context refers to the core customer-facing product, in contrast to our Embed team, which builds tools for third parties to offer benefits to others.) You’ll use Remix, React Router, and other modern frameworks to build polished, reliable, and responsive user interfaces. We're looking for someone who can balance speed with quality, and who’s excited to shape a product that thousands rely on daily. You’ll work with Remix, React Router, and other modern frameworks to build pixel-perfect, responsive, and scalable UIs. This role is ideal for someone who loves sweating the details, crafting great developer and user experiences, and writing clean, modern frontend code without slowing down the team and most importantly, shipping fast⚡️. Why Join Us? * Own the Core Product – Your work directly impacts how our customers use Kota. You won’t be buried in internal tooling or working on SDKs — you’ll help define the actual experience companies and employees rely on. * Ship Fast, Ship Right – We’re a small, high-ownership team that values clean code, fast execution, and smart decisions. You’ll have freedom to move quickly without red tape. * Modern Stack – Remix, React Router, TailwindCSS, .NET 8, PostgreSQL, Vercel, AWS. We keep our stack sharp and avoid unnecessary complexity. * Craft-Driven Culture – From UX polish to dev experience, we care about the details. You’ll work with talented designers and engineers who sweat the small stuff and ship with pride. * Autonomy and Trust – We hire great people and get out of their way. You’ll have real responsibility from day one, with space to do your best work. * Global Impact – Thousands of people use our platform to access benefits through their jobs. What you build makes a difference. What You’ll Do * Build and maintain the core customer product at Kota — this includes both employer and employee-facing UIs. * Collaborate across engineering, product, and design to ship new features and improvements quickly and responsibly. * Shape frontend architecture, performance, and maintainability for long-term success. * Build reusable components and patterns that make the product easier to scale and maintain. * Ensure a top-notch user experience — fast, intuitive, and accessible. * Participate in technical planning, code reviews, and debugging production issues. * Own your code all the way to production — including performance, error handling, and observability. What We’re Looking For * 6+ years building modern web apps using React and frameworks like Remix, React Router, NextJS, or similar. * Experience building production apps with strong attention to UI quality and performance. * Great taste in design and UX — you care about layout, responsiveness, and the final polish. * Comfortable in fast-moving teams with ambiguity and lots of responsibility. * Not afraid to make decisions, lead architecture, and advocate for best practices. * Comfortable owning features end-to-end, including rollout and support. * Bonus: Experience building design systems, customer-facing financial products, or tools for non-technical users. And of course.... Your employee benefits! * Health Insurance contribution via Kota * Access to a Workplace Pension with matched contributions up to 5% via Kota * WFH stipend to support your home office needs * Group Life Assurance via Kota * Generous Paid Time Off - work hard and take the time you need * Annual, company-wide offsite We are an equal-opportunity employer and value diversity at our company. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status