ML Infra Engineer for Scalable RL & Post-Training

White Circle is seeking an ML Infrastructure Engineer to build the systems behind our LLM post-training, RL, evaluation, inference, and agentic development workflows. You’ll work close to researchers, GPUs, training loops, data control systems, evals, inference stacks, and the infrastructure decisions that directly affect model learning and product quality.

You’ll design scalable pipelines, tune end-to-end performance, and build agentic environments while staying close to state-of-the-art in