The Role
Lead research on action-conditioned world models and reward models for robot policy evaluation. Train generative and policy models, design rigorous evaluations, validate rewards against human judgments and task outcomes, and ship research into production systems. Collaborate directly with customers deploying robots, while shaping research direction across world models, robot learning, and real-world robotics.
Summary Generated by Built In
Robotics is finally leaving the lab. At Momentum Research Labs, we are building the systems that turn promising models into capable machines in the real world. Our first product is a world-model based simulator for training and evaluating robot policies.
As a Founding Research Scientist, you will lead the research behind trustworthy robot policy evaluation: the action-conditioned world models that generate robot rollouts and the reward models that capture task success and guide policy learning. Your work will help customers understand how their policies perform and decide what to improve before deploying them on real robots.
This is an unusually broad, high-impact technical role for someone who wants to build, ship, and learn quickly at the frontier of physical AI. You will move fluidly between model training, evaluation design, software development, and customer collaboration. If you are energized by hard research problems, high ownership, and seeing your models help robots operate in the real world, we would love to talk.
- Lead the training and research of action-conditioned world models that power our simulator and policy evaluations.
- Craft reward models that capture task success and provide useful learning signals for robot policies. Validate them against human judgments and task outcomes.
- Design and ship evaluations that reveal where our models succeed, where they fail, and which improvements matter for customers.
- Work directly with customers to understand their evaluation needs and support them as they deploy and scale their robots.
- Shape the research direction and technical foundation of a founding team working across world models, robot learning, and production systems.
Who You Are
You have built and shipped in several of the following areas:
- End-to-end training of large generative models over video, image, or 3D data, using diffusion, autoregressive, or flow-matching approaches.
- Training learned policy models, including vision-language-action (VLA) models, diffusion policies, world-action models, or end-to-end imitation and reinforcement learning policies for manipulation or driving.
- Training large models across multiple GPUs and nodes.
- Building and shipping evaluations for large models.
- Training and evaluating reward models for robot learning, using human feedback or task outcomes.
- Deploying robots outside the lab and into the real world.
You are comfortable taking an open research question through experiments, implementation, and rigorous evaluation. You care about whether a reward captures meaningful behavior and whether an evaluation reflects real policy performance. You thrive with a broad mandate, move quickly without being micromanaged, and are excited to have an outsized impact early.
Our north star is simple: more robots deployed in the real world. We are assembling a small, exceptional team to solve the unglamorous, difficult, and deeply consequential work required to get there. If you want to help build the bridge between breakthrough models and useful robots, join us.
The base pay range for this role is $225,000 – $300,000 per year.
Skills Required
- Experience building and shipping end-to-end training systems for large generative models using video, image, or 3D data
- Experience with diffusion, autoregressive, or flow-matching approaches
- Experience training learned policy models, such as vision-language-action models, diffusion policies, world-action models, imitation learning, or reinforcement learning policies
- Experience training large models across multiple GPUs and nodes
- Experience building and shipping evaluations for large models
- Experience training and evaluating reward models for robot learning using human feedback or task outcomes
- Experience deploying robots outside the lab and into the real world
- Ability to take open research questions through experimentation, implementation, and rigorous evaluation
- Willingness to collaborate with customers and work across research, software development, evaluation, and production systems
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The Company
What We Do
Momentum Manufacturing Group (MMG) is a metal manufacturing services provider that supports OEM customers with end-to-end production and supply-chain capabilities. Its integrated services include engineering and design for manufacturability, fabrication, aluminum extrusion, precision machining, welding, finishing, and assembly. The company operates nine facilities in New England and serves customers across diverse end markets, helping consolidate manufacturing operations and simplify OEM supply chains.
