10mo ago
AI Researcher
RadixArk is the employer — EngRadar is a job radar, not a recruiter. We track this posting from their own careers page and send you straight there; we never handle applications or CVs.
$200k–$400k
Apply directly →
About the role
We’re looking for researchers and engineers who love training the best AI models. You’ll work on the full training stack, from data and recipes to post-training, RL, and evaluation, alongside a small, high-caliber team building at the frontier of AI systems.
What you might work on
Pre-training, mid-training, and post-training of large models
Reinforcement learning, reasoning, and reward modeling
Data, evaluation, and the research behind making models measurably better
You might be a fit if you
Have a track record of research or engineering on large-model training
Care about shipping results, not just publishing them
Are curious, direct, and comfortable with ambiguity
Posted by RadixArk on their own careers page — you apply directly, no recruiter in between. View original / apply →