Full Stack Engineer (Contractor)

About CenzCenz is a new longevity venture on a bold mission: help people live to 100, and live well while doing it. Most health systems today are treatment-first; people get care after things go wrong. We’re building the opposite: a prevention-first ecosystem designed around diagnostics, daily nutrition, and habit-building that actually sticks.Our goal is simple but ambitious: Make healthy eating and preventive health effortless, so people can reach their long-term wellness and longevity goals without friction.We operate like a fast-moving, product-first startup:small, mission-driven teamrapid experimentationdaily iterationobsession with real human impactIf you want your work to have real impact on human health, this is where it happens.About the RoleWe’re looking for a super hungry, entrepreneurial full-stack engineer to join as the first dedicated engineer on the team. You will build the core Cenz mobile app that brings together:personalized nutritionAI-powered meal analysisdiagnostics-based health guidancehabit trackinga frictionless experience for eating to support longevityThis is a 0 → 1 role with full ownership. You’ll ship fast, iterate constantly, and help define the product, the stack, and the early user experience.What You'll Be DoingBuild and launch the Cenz iOS + Android app end-to-end using React Native.Develop core features: daily goals, meal logging, photo analysis, personalized recommendations, diagnostics integration.Design a seamless, habit-forming UX that makes healthy eating effortless and engaging.Own the backend using Supabase/Node.js — user models, auth, APIs, data flows.Ship fast, push updates frequently, and iterate based on real user feedback.Set up the technical foundation: CI/CD, analytics, secure data handling, and app store readiness.What We’re Looking ForStrong experience in React Native (Expo)Full-stack skills: Node.js, Supabase/Firebase, TypeScriptExperience with API integrations, auth, notifications, and mobile UIExposure to AI/ML integrations is a plusComfort building 0 → 1 products with fast iteration cyclesExperience shipping to App Store / Play Store Hungry — you want to build something meaningful, not just follow tasksEntrepreneurial — you thrive in ambiguity and move fastUser-obsessed — every detail mattersPassionate about health, nutrition, longevity, or preventive care