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LettaLetta

Research Engineer / Scientist, Self-Improvement

Develops methods for AI agents to self-improve post-training through prompt optimization, continual learning from long-horizon tasks, hypothesis testing, and scalable experiments. Requires expertise in LLMs, agent frameworks, and impactful research track record.

About the job

Responsibilities

  • Developing prompt optimization and system prompt learning methods that allow agents to continuously learn from long-horizon tasks
  • Developing methods allow agents automatically generate and test out hypotheses in an environment, or seek out and improve their own weaknesses
  • Improving the efficiency of learning from long-running agentic tasks
  • Designing and running experiments to measure self-improvement scalably

Requirements

  • Expertise in machine learning, in particular LLMs and continual learning
  • Familiarity with agent frameworks and prompt optimization
  • Track record of impactful research (breakthrough publications and/or open-source contributions)
  • Ability to balance execution speed with empirical rigor
  • Real-world impact beyond pure academic work

Skills

LLMs, Continual Learning, Agent Frameworks, Prompt Optimization, Machine Learning, Open-Source, Experiments, Hypothesis Testing, Prompt Engineering

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