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The LLM Data Company (YC X25) provided pay range

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Base pay range

$150,000.00/yr - $250,000.00/yr

Direct message the job poster from The LLM Data Company (YC X25)

The LLM Data Company creates tooling for model evaluation and reinforcement learning. We’re currently building doteval — an AI-assisted workspace for technical and non-technical staff to create evals, rewards functions, and environments. We’re a seed-stage company backed by Y Combinator and Tier-1 VCs and work with some of the largest AI companies in the world.

We’re looking for founding engineers to support the rapid RL compute scaling effort.

Role

• Design and implement scalable RL recipes for post-training task-specific models
• Develop modular environments, reward functions, and evaluator scaffolds for internal and customer-facing tasks
• Drive research at the intersection of scalable infra and modern RL frameworks to enable RL-as-a-service
• Drive foundational research to publish open source environments and training data
• Build data generation and curation pipelines to support frontier post-training
• Collaborate with product teams to deliver a user friendly interface for non-technical users to generate data

Qualifications

• Masters or PhD in Computer Science or related field
• Comfort with core tooling (verl, PyTorch, etc.)
• Familiarity with modern post-training techniques (GRPO, etc.)
• Experience with evaluations and reward engineering
• Published in top journals (ICLR, NeurIPS, ICML, etc.)

To apply

Send your CV and a short note to

Seniority level

• Seniority level

  Entry level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Software Development

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