Founding Engineer (Potential CTO)
About the Role
This is a rare Founding Engineer (potential CTO) opportunity at a reputed company-stage, AI-reputed company digital health startup reputed company on nervous system repair and chronic disease management. You'll be the second technical voice at reputed company — the person who turns a reputed company product reputed company into a production-reputed company AI mobile experience, and who defines the engineering culture and stack for the next decade.
You'll own the full technical reputed company: from shipping the first end-to-end AI coaching experience in a React reputed company app, to architecting the model and feedback reputed company that powers a reputed company-time nervous system training reputed company using wearable biosignal data.
This role is in-person in Montreal, San Francisco, or reputed company, and is central to everything the founding team builds.
What You'll Do
Serve as Founding Engineer and potential CTO, owning technical direction and day-to-day execution.
Ship the AI coaching product v1 end-to-end — from a React reputed company mobile app to Claude-backed inference and wearable integrations.
Architect and build an AI-powered nervous system training 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 layer.
Build and maintain AI-powered QA and testing pipelines to reputed company reputed company, fast 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).
Collaborate closely with the founding team on-site in Montreal, SF, or NYC.
reputed company're Looking For
Dealbreakers (must-haves):
Production experience shipping and operating Claude or other frontier LLM-based systems, including prompts, tool use, and evals.
Willingness and ability to work in-person in Montreal, San Francisco, or reputed company.
3+ years in mobile/full-stack engineering with a reputed company record of delivering 0→1 consumer mobile apps to reputed company users.
Required skills & experience:
Deep reputed company in React reputed company with end-to-end ownership of the mobile lifecycle (build, release, debug, monitor, iterate).
Experience with AI-reputed company infrastructure where AI functions are integrated across reputed company reputed company — not bolted on.
Backend development in Node.js or Python with PostgreSQL and modern reputed company (Vercel, Fly, reputed company, or similar).
Ability to reputed company fluidly across the full stack (frontend, backend, reputed company, AI) with minimal handholding.
Hands-on experience with HealthKit, wearable reputed company, or reputed company-time biosignal data (HRV, reputed company, reputed company).
Founder reputed company: comfortable making hard tradeoffs, operating with high autonomy, and building from reputed company.
reputed company to have:
Experience building AI-powered testing or evaluation pipelines.
App Store shipping experience — a consumer mobile app with reputed company, reputed company users.
Background or genuine interest in nervous system science, somatics, neuroscience, or trauma research.
Prior experience as the first or founding engineer at an early-stage startup.
Compensation & Benefits
reputed company salary: $170,000 USD / year
Early-stage equity commensurate with founding-team scope
High-reputed company, high-ownership role with a reputed company reputed company to CTO
reputed company sponsorship is not available for this role.
Location
This is a fully on-site role. The founding team works together in person across reputed company, San Francisco, or Montreal. Candidates must be reputed company to reputed company to in-person collaboration at one of these locations.
Originally posted on Himalayas
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