Senior Full Stack Engineer - Future Openings

Join Outlive Help Build the Operating System for Better Long-Term Health Outlive is translating the principles of Medicine 3.0 into a practical, evidence-based product that helps people change the trajectory of their health. We focus on what matters most. Setting meaningful long-term goals, understanding the risks that can get in the way, and selecting the tactics that move the needle. Our approach is grounded in the ideas Peter Attia has spent his career developing. A deliberate practice with clear metrics and truly personalized plans that extend healthspan, not just lifespan. We re building a system that takes the essential pillars of long-term health and makes them actionable. Our goal is simple. Give people a structured way to understand where they are today, what levers truly matter, and how to make durable progress over time. Why Outlive You will shape the foundation, not optimize at the margins We re in the earliest stages of building something that doesn t exist anywhere else. There are no templates. No inherited systems. The work requires people who want to solve first-principles problems and create frameworks built to last. Science and design sit at the center of everything We aim to convey complex ideas with clarity and precision. That means pairing rigorous scientific thinking with thoughtful, intuitive design; so users can understand why something matters and how to act on it. AI is part of how we work The product itself is grounded in science and behavior change. But as a team, we use AI to think, test, draft, explore, and accelerate our work. It s a tool that enhances judgment and craftsmanship, not a replacement for either. We care about rigor, honesty, and high standards The team is small, driven, and aligned around a shared goal: build something that meaningfully improves long-term health. We challenge ideas respectfully, expect clear reasoning, and operate with a bias toward action. Precision matters. So does integrity. Join our candidate pool to be considered for future openings on our team! Note: We are not actively hiring for this role at this time. We are collecting candidate interest for future openings once we move forward with this position. Role Overview Outlive is building a mobile-first digital health platform focused on long-term risk reduction, personalized health intelligence, and sustainable behavior change. As a Senior Full Stack Engineer, you ll play a critical role in shaping and delivering product experiences across mobile, web, and backend services. This role is ideal for a senior engineer who is strongest in one area (frontend or backend) but highly capable and opinionated across the stack. You ll own features end-to-end-from user experience and data modeling to API design and deployment-while helping establish high engineering standards in a HIPAA-aware environment. Responsibilities Product & Feature Development • Own end-to-end implementation of product features spanning mobile (React Native / Expo), web (Next.js App Router), and backend services (NestJS / Node.js) • Collaborate closely with product and design to translate complex health concepts into clear, usable experiences • Drive technical decisions that balance speed, quality, and long-term maintainability Frontend (Mobile & Web) • Build and maintain shared UI and interaction patterns using Tamagui across mobile and web • Implement mobile experiences using React Native (Expo), expo-router, TanStack Query, and offline/background sync patterns • Build web experiences using Next.js (App Router) and React • Integrate payments using Stripe.js and react-stripe-js • Integrate frontend applications with custom authentication hooks backed by Firebase and backend identity services • Consume and evolve REST APIs • Implement analytics (PostHog), error tracking (Sentry), and accessibility best practices • Write and maintain frontend tests using Jest, Vitest, React Testing Library, Playwright, and Detox as appropriate Backend & APIs • Design and implement backend services using NestJS (v11) and TypeScript • Build secure, well-validated REST APIs using zod, class-validator, and OpenAPI • Implement authentication and authorization using Google Identity JWT validation and role-based access control • Model relational data using Prisma and Postgres (Cloud SQL) • Implement async and background workflows using Google Cloud Tasks • Integrate with external services such as OCR, scheduling APIs, and third-party data sources • Ensure observability through structured logging, metrics, and Sentry • Write unit and integration tests using Jest Collaboration & Technical Leadership • Act as a senior individual contributor, setting quality bars through code, reviews, and architectural decisions • Partner closely with infrastructure and DevOps engineers to ensure reliable deployments • Identify opportunities to simplify systems and reduce operational overhead • Contribute to evolving engineering stan...