Senior Front End Developer

Senior Frontend Engineer Location: Remote Europe or Poland preferred Type: B2B contract Compensation: 200,000 to 260,000 PLN net yearly Equity: Open to discussion About us We are building the intelligence layer for pet health. Our goal is to transform how pet owners and veterinarians understand, monitor, and act on health data. We combine AI, diagnostics, and longitudinal data to create a system that does not exist today. We are early, fast moving, and already working with real partners and data. What you will do • Own the frontend across web and mobile experiences • Build a fast, intuitive AI chat interface used daily by pet owners and vets • Design and implement complex UI systems for health data, reports, and recommendations • Work closely with product and design to ship quickly and iterate constantly • Drive performance, responsiveness, and reliability at scale • Help define the product, not just implement it What we are looking for • Strong experience with React and TypeScript, 5+ Years • Experience building production level apps with real users • Eye for design and product quality • Comfortable working in ambiguity and moving fast • Ability to own features end to end • Experience with Backend • Willing to work weekends • Bonus if you have worked on AI products, data heavy UIs, or health tech Tech stack • React, React Native • TypeScript • Modern frontend tooling • AI integrated workflows Why this role • Working along some of the most famous engineers in AI like Soumith Chintala CTO of Thinking Machine Labs (Advisor) • Direct impact on product, not just tickets • Work on something genuinely new in AI and biology • Fast iteration, real users, real data Equity • Meaningful upside tied to company growth • Early team member level ownership