Founding Engineer (Senior/Staff)

🏥 About Sailor Health Sailor Health is on a mission to solve the mental health crisis among older adults. Getting older in America is tough: 90% of seniors live with chronic health conditions, 40% feel isolated, and older adults have the highest suicide rates of any age group. Sailor exists to change that. Sailor Health is building the AI-native health system for happier and healthier aging. Sailor offers virtual mental health, care navigation, wellness classes, AI coaches, and AI care agents. Our vision is to become the trusted household name for older adults in America, setting a new standard for aging with dignity and honor. We are doubling every 75 days and serving thousands of patients across 43 states. We are honored to have the support and backing of world-class founders from Ramp, Nourish, Headway, Charlie Health, and Spring Health. ⭐ About the Role Location: New York City orRemote. Sailor is looking for a Founding Full-Stack Engineer to join as our 4th engineer. This is a ground-floor opportunity to design and launch AI-first products from scratch at a startup with extreme PMF. You’ll own major technical decisions, shape our engineering culture, and use AI to drive real clinical impact at scale. 💻 Your Key Responsibilities Build AI coaches for patients : Create AI voice-powered coaches that support cognitive health, mindfulness, and overall wellness, helping patients stay engaged between sessions, practice therapeutic techniques, and build healthy routines in a natural, conversational way. Build AI care agents for our healthcare providers : Build and scale AI-native features including speech-to-text triage, care navigation copilots, auto-summarized progress notes, and intelligent intake. Build our clinical operations layer : Architect and ship the backbone of our care delivery engine, spanning patient scheduling, documentation, and revenue cycle management, leveraging best-in-class healthcare APIs to deliver a seamless and scalable clinical operation. ✅ Ideal Qualifications & Skills You’re an A+ player. You have a burning desire to win, a track record of excellence, and a drive to build with urgency and precision. You want to be the best and you want your team win. You have 4+ years of experience. You are comfortable with backend and frontend in React, Typescript, Node,js, PostgreSQL, and Claude Code. You’re product-driven. You have strong intuition for user needs, high EQ, and a deep curiosity to understand the underlying business and clinical problems, not just the technical solution. You thrive in ambiguity. You thrive in ambiguity. You’re energized by open-ended problems and move quickly with imperfect information.