What is a Research Engineer at Letta?
As a Research Engineer at Letta, you are at the architectural forefront of the next generation of LLM-based autonomous agents. This role is not merely about model training; it is about engineering sophisticated systems that enable models to manage long-term memory, self-improve, and interact with complex environments. You will be responsible for bridging the gap between theoretical research in Post-Training, Memory, and Self-Improvement and the practical, scalable implementation required for high-performance production systems.
The impact of this role is foundational. By working on the core primitives that allow Letta to maintain state and refine its own behavior, you are directly influencing how users interact with persistent, context-aware AI. You will collaborate closely with a team of researchers and engineers to solve "frontier" problems—such as optimizing context windows, refining agentic feedback loops, and ensuring model reliability. Expect to work in an environment where the boundary between research and engineering is fluid, requiring both academic rigor and a pragmatic, systems-thinking mindset.
