# Member of Technical Staff - Research & Post-training at Preference Model Labs

- Company: Preference Model Labs
- What the company does: Preference Model is building the next generation of training data to power the future of AI. Backed by a16z and South Park Commons.
- Company website: https://www.preferencemodel.com
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco
- Work setup: On-site
- Pay: $200K to $350K base salary per year (USD)
- Posted: 2026-09-11
- Apply by: 2026-10-26
- Apply: https://jobs.ashbyhq.com/Preference-Model/22f5bbbc-1459-4915-97c8-cda18046ec31
- Page: https://www.1752.vc/careers/jobs/preference-model-labs-member-of-technical-staff-research-and-post-training/

## About the role

Models of the future will be able to train themselves on tasks that they are not good at. We are interested in investigating how far we can push the boundaries of self-directed learning. We are looking for machine learning Research Engineers or Research Scientists to push the frontier of post-training on large language models in a role that blends research and engineering, requiring you to implement novel approaches and shape research directions.

## What they're looking for

- Experience running end-to-end LLM post-training pipelines of models sizes at least 7B in size
- Proficiency in Python and PyTorch or JAX
- Experience with at least one modern RL training framework
- Experience building and operating ML infrastructure at scale

Tags: Engineering