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TypeSafe is an AI lab building System One Models that combine LLM reasoning with code reliability for production-grade AI. The company launched its first model, Jev, in September 2026 and is backed by a16z with $870M Series A funding.
You will own the console and playground product end-to-end, including enterprise features such as billing, org management, and more. This is a full-stack role where you'll combine strong product sense with engineering excellence to define the customer-facing product experience.
Key responsibilities:
- Own product features end-to-end from design and prototype through production, with craft and judgment
- Build polished, reliable user interfaces at enterprise scale
- Partner closely with product, design, and customers to translate real-world needs into product improvements
- Instrument, measure, and improve product quality, reliability, and performance
- Contribute across the stack wherever you can add the most leverage
The tech stack is primarily Python, with TypeScript, Next.js, and Tailwind CSS for frontend, and Kubernetes for orchestration. The team empowers developers to use any tooling they find helpful, including AI and agents.
The team is small, flat, and close-knit, working fully in-person in the San Francisco office near Embarcadero station. The culture emphasizes excellence, craftsmanship, emotional honesty, and kindness.
QUALIFICATIONS:
- 2–7 years of full-stack engineering experience with excellent product intuition
- Demonstrated track record shipping customer-facing products with deep care for craft and detail
- Scrappy, hacky mindset; thrive in ambiguous, fast-moving problem spaces with creative solutions
- Ability to move fast without sacrificing quality
- Hands-on experience building with LLMs; understand their capabilities and limitations
- Comfortable owning problems end-to-end and thinking beyond code to how products are used in the real world
