# Member of Technical Staff, Reinforcement Learning at True Talent Solutions Partners

- Company: True Talent Solutions Partners
- Status: Open
- Workplace: On-site
- Location: Montreal
- Level: Staff
- Discipline: AI & ML
- Employment: Full-time
- Salary: $250K–400K
- Posted: 2026-11-15
- Skills: Client Roles
- Apply: https://jobs.ashbyhq.com/true-talent-solutions-partners/8cf9de91-02c4-4da1-95ab-6e81f77ee85b

## Description

ABOUT THE ROLE

Build reinforcement learning environments and evaluation systems for clinical reasoning models. This hands-on research role connects task and reward design with model training, helping create reliable decision-support tools for healthcare.


WHAT YOU'LL DO

 - Build environments for complex clinical reasoning, including multi-step tasks, tool use, state transitions, and measurable outcomes.

 - Design and calibrate reward functions, grading rubrics, and LLM judges, and test them for reward hacking and misleading scores.

 - Own the full workflow from task design and data creation through implementation, evaluation, and delivery to model-training teams.

 - Run post-training and agent-evaluation experiments, using observed failures to improve environments.

 - Collaborate with clinicians and research leadership to validate model outputs.


WHAT WE'RE LOOKING FOR

 - A PhD in computer science, machine learning, or a related field, or at least three years of full-time experience in reinforcement learning research or post-training.

 - At least three years of research or industry experience, or current final-year PhD or postdoctoral status, with a bachelor's degree or higher in a relevant technical field.

 - Hands-on experience building reinforcement learning environments for post-training or agent evaluation, ideally in a frontier AI lab or comparable AI organization.

 - Production-level Python, PyTorch, and Transformers experience, plus familiarity with LLMs, reward modeling, and evaluation.

 - Experience owning reward functions, grading rubrics, or LLM jud

More True Talent Solutions Partners roles: https://deviantjobs.com/companies/true-talent-solutions-partners