Senior Front End Developer

Senior Frontend EngineerLocation: Remote Europe or Poland preferredType: B2B contractCompensation: 200,000 to 260,000 PLN base yearly plus up to 140,000.00 PLN vested over 4 years in Equity. Equity: Open to discussionAbout usWe 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 doOwn the frontend across web and mobile experiencesBuild a fast, intuitive AI chat interface used daily by pet owners and vetsDesign and implement complex UI systems for health data, reports, and recommendationsWork closely with product and design to ship quickly and iterate constantlyDrive performance, responsiveness, and reliability at scaleHelp define the product, not just implement itWhat we are looking forStrong experience with React and TypeScript, 5+ YearsExperience building production level apps with real usersEye for design and product qualityComfortable working in ambiguity and moving fastAbility to own features end to endExperience with BackendWilling to work weekendsBonus if you have worked on AI products, data heavy UIs, or health techTech stackReact, React NativeTypeScriptModern frontend toolingAI integrated workflowsWhy this roleWorking along some of the most famous engineers in AI like Soumith Chintala CTO of Thinking Machine Labs (Advisor)Direct impact on product, not just ticketsWork on something genuinely new in AI and biologyFast iteration, real users, real dataEquityMeaningful upside tied to company growthEarly team member level ownership