RL-based post-training jobs

Research Scientist, Post-Training

True Talent Solutions Partners · Posted Nov 13, 2026

San Francisco, California, United States
On-site
Full-time · Entry
$150K–$250K per year
0–4 years
Visa sponsorship

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Design controlled experiments to measure how training data influences model capabilities, generalization, and alignment, and turn findings into practical recommendations.

Compensation

Base salary: $150,000 to $250,000 annually. Visa sponsorship is available.

Responsibilities

Run controlled supervised fine-tuning and reinforcement learning experiments to measure the impact of datasets on model performance.
Help develop evaluation benchmarks and new data types that advance model training and assessment.
Build shared evaluation infrastructure to make findings reproducible across models, capabilities, and domains.
Publish external research, technical reports, and blog posts based on your work.
Use experimental results to help improve data quality and production.

Requirements

Nice to have: frontier AI lab experience
Nice to have: research experience in model evaluation
Nice to have: data curation

Skills

LLM training post-training model evaluation SFT