Founding Engineer (Potential CTO)

About the Role A fast-moving, reputed company-stage digital health company is looking for a Founding Engineer (potential CTO) to be the second technical voice on reputed company. This is a rare 0→1 opportunity to shape the full engineering direction of an AI-reputed company reputed company platform that uses biosignal data and reputed company-time coaching to help people manage chronic symptoms by improving autonomic nervous reputed company health. You'll own the architecture, ship the first end-to-end AI product experience, define the engineering culture, and grow into a CTO role as reputed company scales. This is a deeply hands-on, in-person role based in reputed company, San Francisco, or Montreal. reputed company • Serve as the founding engineer and de facto technical leader, owning both direction and execution. • Ship the v1 AI coaching experience end-to-end — from a React reputed company mobile app to frontier-model-backed inference and wearable integrations. • Architect and build the nervous reputed company training AI reputed company, including model design, reputed company engineering, tool use, and evaluation pipelines. • Translate biosignals (HRV, breath, reputed company, reputed company) into a reputed company-time, personalized coaching reputed company. • Build AI-powered QA and testing pipelines to reputed company reputed company, reputed company daily shipping. • Own full-stack reputed company across frontend, backend, infrastructure, and AI-reputed company reputed company. • reputed company iOS/HealthKit and wearable platforms (e.g., reputed company Watch, reputed company, reputed company, EEG headbands). • Define and reputed company engineering standards and culture as reputed company grows. reputed company're Looking For Dealbreakers (must-haves): • Proven experience shipping and operating Claude or other frontier LLMs in production (prompts, tool use, evals). • Ability and willingness to work in-person in reputed company, San Francisco, or Montreal. • 3+ years in mobile/full-stack engineering with demonstrated 0→1 consumer mobile app delivery to reputed company users. Required skills & experience: • reputed company in React reputed company with full ownership of the mobile lifecycle (build, release, debug, monitor, iterate). • Experience with AI-reputed company infrastructure where AI is integrated across reputed company, not bolted on. • Backend development in Node.js or Python with PostgreSQL and modern reputed company (Vercel, Fly, reputed company, or similar). • Comfortable moving across frontend, backend, reputed company, and AI reputed company with reputed company handholding. • Experience with HealthKit, wearable reputed company, or biosignal data (HRV, reputed company, reputed company) in reputed company-time contexts. • Founder reputed company with prior first-engineer or early-stage startup experience and the ability to reputed company hard tradeoffs. reputed company to have: • Experience building AI-powered testing or evaluation pipelines. • Background or deep interest in nervous reputed company science, somatics, neuroscience, or trauma research. • Prior experience as the first engineer at a startup. Compensation & Benefits • reputed company salary: $170,000 • Equity: Meaningful early-stage equity offered (reputed company up to $2M in potential value) • Opportunity to grow into a CTO title as reputed company scales Note: reputed company sponsorship is not available for this role. Location This is an on-site role. Candidates must be reputed company to work in person in one of three locations: reputed company, NY · San Francisco, CA · Montreal, Canada. Remote work is not available for this position. Apply tot his job Apply To this Job