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Full-Time

Machine Learning Systems Research Engineer, Agent Post-training – Enterprise GenAI at Scale

Company Scale
Location San Francisco, CA; New York, NY
Salary Competitive salary
Posted Posted on January 2, 2026

Job Description

Opening. We are working on an arsenal of proprietary research and resources that serve all of our enterprise clients. As an ML Sys Research Engineer, you’ll work on building out the algorithms for our next-gen Agent RL training platform, support large scale training, and research and integrate state-of-the-art technologies to optimize our ML system.

What you'll do

You will:

  • Build, profile and optimize our training and inference framework.
  • Post-train state of the art models, developed both internally and from the community, to define stable post-training recipes for our enterprise engagements.
  • Collaborate with ML teams to accelerate their research and development, and enable them to develop the next generation of models and data curation..
  • Create a next-gen agent training algorithm for multi-agent/multi-tool rollouts.

What you need

  • At least 1-3 years of LLM training in a production environment
  • Passionate about system optimization
  • Experience with post-training methods like RLHF/RLVR and related algorithms like PPO/GRPO etc.
  • Ability to demonstrate know-how on how to operate the architecture of the modern GPU cluster
  • Experience with multi-node LLM training and inference
  • Strong software engineering skills, proficient in frameworks and tools such as CUDA, Pytorch, transformers, flash attention, etc.
  • Strong written and verbal communication skills to operate in a cross functional team environment.
  • PhD or Masters in Computer Science or a related field

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