ashby
Software Engineer, Agent Platform
Letta
San Francisco, USA
Full-time
Mid
Onsite
Discovered 1 weeks ago
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Full Job Posting
Solving Self-Improving Superintelligence
The human brain is a sponge. Today’s AI brains are brittle and rigid. At Letta, we’re building self-improving artificial intelligence: creating agents that continually learn from experience and adapt over time.
Founded by the creators of MemGPT from UC Berkeley’s Sky Computing Lab (the birthplace of Spark and Ray). Backed by Jeff Dean, Clem Delangue, and pioneers across AI infrastructure. Our agents already power production systems at companies like 11x and Bilt Rewards , learning and improving every day.
We’re assembling a world-class team of researchers and engineers to solve AI’s hardest problem: making machines that can reason, remember, and learn the way humans do.
Note that this role is in-person (no hybrid) , 5 days a week in downtown San Francisco.
Responsibilities
- Develop Letta's OSS agents framework and cloud service
- Design scaleable & resilient backend services and APIs to support Letta Cloud
- Work with researchers and support bleeding-edge agent architectures in Letta
Required skills
- Strong proficiency with Python
- Strong understanding of how to architect services for security, reliability, and performance
- Ability to build scaleable backend services
- Strong understanding of SQL databases (Postgres)
- Familiarity with tooling across the AI stack, such as inference engines (e.g. vLLM, Ollama), and LLM provider APIs (OpenAI, Anthropic)
- Bonus: proficient with TypeScript, React, Tailwind, etc. (the modern stack for web applications)
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