Senior ML Engineer, Manipulation

What the role actually is

Chef Robotics is hiring a senior ML engineer focused on manipulation in San Francisco. The role designs and trains policies for robotic food handling, including imitation learning, reinforcement learning, diffusion policies, and transformer-based action models.

The listing is technical, but it is directly relevant to robot learning: the work turns production food-handling data, teleoperation, and evaluation pipelines into manipulation behavior that can run on real robots.

• Design and train learned manipulation policies for variable food items and end effectors
• Build data collection and training pipelines with teleoperation and kinesthetic teaching inputs
• Evaluate policy architectures such as diffusion policies and action-model transformers
• Adapt models for production robots handling deformable and inconsistent materials

• Robotics, machine learning, or computer science depth at senior engineering level
• Experience with robot manipulation, visuomotor control, imitation learning, or reinforcement learning
• Strong PyTorch and production-minded ML system implementation skills
• Comfort testing learned policies against real-world robot constraints

Food manipulation is a hard physical AI problem because the objects are inconsistent, deformable, and messy. Chef's production deployments make this a useful signal for anyone watching robot learning move beyond lab tasks into commercial operations.