Software Engineer, Agent Harness

The role

You will bridge the gap between bleeding-edge agent systems and production-grade software. You will help define developer APIs for agents and lead development of the company's OSS stack and hosted service.

What you will do

• 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 qualifications

• 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)

Nice to have

• proficient with TypeScript, React, Tailwind, etc. (the modern stack for web applications)

Before you apply

• Initial screen (30 min)
• Technical screen (1-1.5 hours)
• Paid in-person work trial (2 days onsite in SF)

About the company

Letta is building self-improving artificial intelligence and the developer stack for agents. It was founded by the creators of MemGPT from UC Berkeley’s Sky Computing Lab.