Letta
Software Engineer, Agent Harness
San Francisco Office
Sponsorship not specifiedDetected 687 days ago
TypeScriptPythonReactTailwind CSSBackend DevelopmentSQLPostgreSQLSparkLLMs
About the role
- SOLVING SELF-IMPROVING SUPERINTELLIGENCE The human brain is a sponge.
- Today's AI brains are brittle and rigid.
- Backed by Jeff Dean, Clem Delangue, and pioneers across AI infrastructure.
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
- You value titles or want to people-manage. Letta is a flat company where every researcher and engineer is an individual contributor.
Requirements
- You are fundamentally opposed to closed frontier AI that is controlled by a handful of billionaires and private tech companies.
- Required skills:
Nice to have
- proficient with TypeScript, React, Tailwind, etc. (the modern stack for web applications)
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)
- Initial screen (30 min)
- Technical screen (1-1.5 hours)
- Paid in-person work trial (2 days onsite in SF)
Company info
- 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).
- Our agents already power production systems at companies like 11x https://www.letta.com/case-studies/11x and Bilt Rewards https://www.letta.com/case-studies/bilt, learning and improving every day.
- We're assembling a world-class team of researchers and engineers to solve
- 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.
- We are building the developer stack for agents that can run in production applications, not just demo notebooks.
- As a Software Engineer, you will bridge the gap bleeding-edge agent systems and production-grade software for running agents in real applications.
- You will help define developer APIs for agents, and lead development of our company's OSS stack as well as the hosted service.
- You like stability, and get stressed out when there's nobody telling you exactly what to do. We look for people that thrive in ambiguity and can intuit the most important problems by talking to customers and dogfooding our product.
This listing is sourced directly from Letta's careers page and normalized into a canonical job model.