Jobs

Cognition, makers of Devin, the first AI software engineer, is seeking a Research Engineer for Mid-Training. This role focuses on the critical late-stage training decisions that sharpen model capabilities, bridging pre-training and post-training. You will own data mix, annealing schedules, context length extension, and synthetic data strategies to enhance model reasoning, generalization, and core capabilities. Ideal candidates have deep familiarity with the LLM training pipeline, hands-on experience with continual pre-training, and proficiency in Python and PyTorch, thriving in a fast-moving, research-driven environment.