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Member of Technical Staff - Research

Trajectory· Member of Technical Staff
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San FranciscoFull-timePosted 4mo ago

About the role

Design and build the post-training stack enabling continual learning from real production workflows. Own end-to-end experiments across data, training, and evaluation; shape telemetry into learnable signals, train and serve custom LLMs and agents, and design novel algorithms. Collaborate with founders and design partners to influence culture and architecture of a company focused on continually learning intelligence.

Responsibilities

  • Design and build the post-training stack that enables continual learning from real production workflows.
  • Own end-to-end experiments across data, training, and evaluation: shaping telemetry into learnable signals, training and serving custom LLMs and agents, and designing novel algorithms.
  • Work directly with the founders and design partners, make foundational technical and product decisions, and help define culture and architecture.

Qualifications

  • Experience training or serving large language models
  • Experience building RL environments or evaluation suites for LLMs
  • Proficiency in PyTorch, JAX, or similar ML frameworks
  • Strong experimental design skills
  • Master’s / research experience

Skills

Required:Large language models (LLMs) experienceRL environments or evaluation suites for LLMsML frameworks (PyTorch, JAX or similar)Experimental designResearch experience
Last updated Sep 16, 2026. Interested? Apply on the company site.

About Trajectory

The Platform for Continual Learning

Research lab and product company building the platform for continual learning.

Continual LearningCustomersField NotesPlatformSecurityTeamVisionbessemer-ai-infrastructure-2026
Company profileWebsite

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