Location: (Hybrid) Montreal (Preferred), New York or San Francisco

Salary: up to $170,000 (CAD/USD, depend on location) + Founding Equity (up to 10%)

Type: Full time

Auxo is hiring a Founding CTO for an AI-native health startup building the future of nervous system recovery.

You’ll become the company’s technical leader, partnering directly with the Founder to build an AI-powered consumer health platform from the ground up. This is a rare opportunity to own architecture, product development, AI systems, and engineering culture while helping define the long-term technical vision of the company.

This is not a traditional CTO role. We’re looking for an exceptional builder with founder mentality who wants to write code, ship products & make technical decisions.

• Build and launch a consumer AI mobile application from 0→1
• Own the complete technical architecture across mobile, backend, infrastructure,
  
  
  
  and AI
• Develop React Native applications and own the full mobile lifecycle
• Design backend services using Node.js or Python
• Build AI-powered workflows using Claude and frontier LLMs
• Integrate wearable devices including Apple Watch, HealthKit, Oura, and similar platforms
• Design agentic AI workflows, tool calling, structured outputs, and evaluation pipelines
• Establish engineering standards and architecture decisions
• Partner directly with the Founder on product strategy and execution

• 7+ years building production software
• Strong React Native experience shipping consumer mobile applications
• Full-stack engineering experience across frontend, backend, and infrastructure
• Production experience building AI-powered applications using Claude, OpenAI, Gemini, or similar frontier models
• Experience shipping products from 0→1
• Startup or high-growth company experience
• Strong architecture and technical decision-making experience
• Founder mentality with high ownership
• Comfortable operating with ambiguity and moving quickly
• Passionate about AI and excited to build something meaningful