Full-Stack Growth Engineer

About Us: Future is building a personalized guidance system for lifelong health. We help people understand what to do next for their body, goals, and stage of life — then support them in turning those decisions into sustained behavior change. By combining AI, human expertise, personal health data, and accountability, Future helps members improve performance today while building the resilience, capacity, and healthspan they need for decades to come. About the Role: We’re hiring a Full-Stack Growth Engineer to build and maintain the product and systems that help more of the right people discover Future, convert into members, and reach their first moments of value. You’ll work across web and backend surfaces that power acquisition, signup and access, onboarding and activation, and early engagement. You’ll ship experiments end to end, instrument funnels carefully, and partner closely with product, design, data, and marketing on a small, senior team. This is a hands-on role. You’ll move between product judgment and system design, write production code, run trustworthy experiments, and turn learnings into durable product improvements — not one-off hacks. What You’ll Own: • Acquisition and Conversion: Build and improve the web and product surfaces that introduce Future to prospective members and turn interest into signup. These include landing experiences, checkout and plan selection flows, and the instrumentation that shows where people drop off. • Access and Onboarding: Simplify signup, login, account creation, and first-session activation. Remove friction, clarify value on Day 1, and help new members connect with coaching and get started quickly. • Experimentation Systems: Design, ship, and analyze A/B and multivariate tests across the funnel. Partner with data to define metrics, guardrails, and experiment hygiene so we learn fast without polluting the product. • Full-Stack Delivery : Implement features across frontend and backend — APIs, services, web UI, and the glue between growth surfaces and the core member product. Prefer clear ownership and fast iteration over brittle one-off paths. • Measurement and Insight: Instrument funnels, cohorts, and activation milestones. Use qualitative and quantitative signal to find leverage, prioritize work, and explain why experiments won or lost. • Reliability for Growth Paths: Keep high-traffic growth journeys fast, stable, and observable. Treat conversion-critical paths with the same engineering care as core product. • Cross-Functional Partnership: Work tightly with product, design, data, and marketing. Translate growth hypotheses into shippable product work and bring engineering judgment into roadmap tradeoffs. • AI-Assisted Development: Use coding agents and AI tools to speed up exploration, implementation, testing, and review. Apply engineering judgment to validate their output before it reaches members or prospects. Who You Are: Experience and Background • You have 6+ years of professional software engineering experience, including meaningful ownership of consumer growth, acquisition, activation, or conversion surfaces. • You are strong full-stack: comfortable across modern web frontend and backend services, and able to ship an experiment from UI through API and data without waiting on another team for every layer. • You have run growth experiments in production — A/B tests, funnel instrumentation, and iteration based on measured outcomes, not vibes alone. • You understand customer journeys: segments, touchpoints, dropoff analysis, and how product changes move activation and retention metrics. • You can debug across web UI, networking, backend services, analytics pipelines, and CI. • You have partnered with product, design, and data (or marketing) to take ambiguous gro