# Member of Technical Staff - Machine Learning Capabilities 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/9729e0f8-678d-4548-992b-0b0028cc50c6
- Page: https://www.1752.vc/careers/jobs/preference-model-labs-member-of-technical-staff-machine-learning-capabilities/

## About the role

We’re hiring experienced Machine Learning Engineers to design and build reinforcement learning environments to safely advance model capabilities in machine learning research and engineering. Specifically, you'll be teaching frontier models to do the work of an ML engineer or researcher at a frontier lab.

## What they're looking for

- 5+ years of experience working in machine learning or research, primarily on LLMs and transformer models
- You have strong ML fundamentals and broad research interests. You read many papers or tutorials, understand topics deeply and have the creativity to translate them into RLVR problems
- Proficiency in Python and systems programming and at least one of PyTorch or JAX
- Problem solvers who take ownership and drives solutions end-to-end
- Passion for staying current with the rapidly evolving ML infrastructure landscape
- Ability to meet throughput expectations and respond quickly to feedback

Tags: Engineering