Machine Learning Research Engineer at flagshippioneeringinc

FL105, a privately held early-stage company backed by Flagship Pioneering, is hiring a Machine Learning Research Engineer to develop and deploy ML-powered applications that use large language models to improve human psychological fitness and wellbeing. The role emphasizes ML, reinforcement learning from human feedback, supervised fine-tuning, context engineering, agentic AI, scalable data pipelines, and production deployment, while collaborating with psychological experts and communicating across multidisciplinary teams. The position prefers advanced training in CS/ML/AI and experience with Python, PyTorch, vLLM, LangGraph, and large-scale ML systems.