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Founding Engineer

CleraSan Francisco

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About the Role

This is a rare founding engineering position at an early-stage consumer AI company building real-time, human-feeling conversational experiences. You'll work directly alongside the founder to shape both the product and the engineering culture from the ground up — this is a genuine 1-of-1 seat at the table.

What You'll Do

  • Build across the full stack — frontend, backend, and everything in between — collaborating closely with the founder, design, and fellow engineers.
  • Design and implement systems for memory, retrieval, proactivity, and responsiveness to make AI feel more present and alive.
  • Integrate and improve real-time video generation and audio synthesis models, both internal and third-party.
  • Set the bar for engineering quality and actively help recruit exceptional talent as the team scales.
  • Dogfood the product deeply and use that insight to drive meaningful improvements.

What We're Looking For

  • 2–7 years of software engineering experience, with at least some professional time building production systems — not a new grad.
  • Strong computer science fundamentals: data structures, algorithms, and system design.
  • CS degree or equivalent technical background from a strong academic program.
  • Demonstrated ability to build technically complex projects end-to-end (professional, open source, or side projects).
  • Experience with full-stack application development across frontend and backend.
  • Comfort integrating external APIs and third-party services.
  • Experience in an early-stage startup or fast-moving, ambiguous environment.
  • Proficiency in Python, including typed scientific Python.
  • Bonus: experience with real-time media systems (video streaming, live communication, or audio processing), vision or video generation models, memory or retrieval systems, or audio synthesis applications.
  • High energy, entrepreneurial drive, and genuine excitement about early-stage consumer AI.

Compensation & Benefits

Base salary $175,000–$225,000 USD annually, plus equity. Visa sponsorship is available.

Location

On-site in San Francisco, CA. In-person presence is required.

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