Our Client Currently looking for Founding Engineer

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 Native mobile app to Claude-backed inference and wearable integrations.
• Architect and build an AI-powered nervous system training coach, including model design, prompt engineering, tool use, and evaluation pipelines.
• Translate biosignals (HRV, breath, motion, PPG) into a real-time personalized coaching layer.
• Build and maintain AI-powered QA and testing pipelines to enable safe, fast daily shipping.
• Own full-stack decisions across frontend, backend, infrastructure, and AI-native layers.
• Integrate iOS/HealthKit and wearable platforms (e.g. Apple Watch, Oura, Whoop, EEG headbands).
• Collaborate closely with the founding team on-site in Montreal, SF, or NYC.

What We’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 New York City.
• 3+ years in mobile/full-stack engineering with a track record of delivering 0→1 consumer mobile apps to real users.

Required skills & experience:

• Deep fluency in React Native with end-to-end ownership of the mobile lifecycle (build, release, debug, monitor, iterate).
• Experience with AI-native infrastructure where AI functions are integrated across all layers — not bolted on.
• Backend development in Node.js or Python with PostgreSQL and modern infra (Vercel, Fly, Render, or similar).
• Ability to move fluidly across the full stack (frontend, backend, infra, AI) with minimal handholding.
• Hands-on experience with HealthKit, wearable APIs, or real-time biosignal data (HRV, PPG, motion).
• Founder mindset: comfortable making hard tradeoffs, operating with high autonomy, and building from zero.

• Are you interested in this position?

   

  Apply by clicking on the “Apply Now” button below!

   

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