Applied Research Engineer, Frontier AI Environments

Chakra Labs in New York seeks a seasoned ML engineer to shape post-training workflows, environment design, and data-quality improvements for frontier AI research. You will design and run model-improvement loops across supervised fine-tuning, preference data, and RL approaches, and collaborate with labs to translate research goals into concrete environments and experiments. The role emphasizes building robust training ecosystems, evaluation harnesses, and scalable infrastructure to push agent