Hiring: Principal Machine Learning Engineer, Embodied AI and Smart NPCs Company: Roblox Location: San Mateo, CA Job Posted Time: 2026-09-10 11:00:41 Employment Type: Full-time Target Skills & Keywords : C#, C++, Deep Learning, Machine Learning, PyTorch, Python, Reinforcement Learning, TensorFlow About the job Experience: •7+ years of experience as a Machine Learning Engineer or Research Scientist, applying research to tangible products. Required Skills: •As a Principal Machine Learning Engineer within the Creator Services Machine Intelligence team, you will focus on the research and development of Embodied AI and Behavioral Agents that revolutionize how games are created and played on Roblox. •Bridge the gap between cutting-edge research and massive-scale product application, building agents capable of complex 3D gameplay and unblocking many use cases across Roblox, from automated playtesting to ensure quality, to "ML Players" with human-like movement and strategic reasoning, playing with real players in games. •Work on feature extraction, model training, building validation / RL platform as well as inference set up leveraging methods from imitation learning to reinforcement learning. •And you will create generalizable agents that can perceive 3D environments, understand game rules, plan long-term strategies, and execute complex physics-based actions in real-time. Qualifications: •PhD or Master’s in Computer Science, Applied Math, or other field. A record of top-tier publications (e.g., NeurIPS, ICML, CVPR, AAAI, SIGGRAPH, etc) in embodied agents or related domains is a plus. •Deep technical understanding of Imitation Learning, Robotics, Reinforcement Learning, Computer Graphics and Vision, with experience working on low-latency motor control (human-like movement) and high-level strategic reasoning (game rules/goals). •Proficiency in Python (PyTorch/TensorFlow) and familiarity with C#, C++, or similar systems languages. •A passion for bridging the gap between research and production, moving beyond academic benchmarks to launch scalable solutions that directly impact millions of users. Compensation: •$345,040 - $399,420 / year Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!