Physics Simulation & Generative AI Research Scientist

PROLIM Global Corporation ( is hiring a Research Scientist - Physics Simulation & Generative AI for a leading Technology customer.

Research Scientist - Physics Simulation & Generative AI

Location: Remote - US

Job Description

We are seeking a highly experienced Research Scientist V to work on physics-based motion rewards used to post-train generative video models through reinforcement learning (RL).

The researcher will focus on improving physics-based motion evaluation, optimizing simulation pipelines for large-scale RL training, and extending motion modeling from single-body plausibility to human-object and human-scene interactions using 3D mesh representations.

Key Responsibilities

· Improve dynamic and contact terms within physics-based motion reward signals.

· Optimize physics-based rewards to run efficiently inside large-scale RL training loops.

· Extend motion evaluation from single-body motion to human-object and human-scene interactions.

· Develop and work with 3D human pose, motion, and mesh representations.

· Implement and optimize compute-intensive simulation and ML pipelines using Python and PyTorch.

· Apply numerical methods and ensure simulation/solver stability.

· Collaborate on post-training and reinforcement learning approaches for generative video models.

· Validate simulated physical quantities against human-judged ground truth when applicable.

Required Skills

· 5+ years of relevant research/industry experience.

· Strong experience with rigid-body and contact simulation using MuJoCo, Isaac, Bullet, PhysX, or equivalent.

· Experience with 3D human pose and motion representations, preferably SMPL/SMPL-family models.

· Advanced Python and PyTorch skills.

· Experience profiling and optimizing compute-intensive ML or simulation pipelines.

· Experience with reinforcement learning reward design and/or post-training of large generative models.

· Strong knowledge of numerical methods and solver stability.

· Experience with physics-based simulation and motion modeling.

Preferred / Nice-to-Have Skills

· Generative video or diffusion model experience.

· Publications in physics-grounded generative modeling or differentiable simulation.

· Experience scaling simulation workloads.

· Experience validating simulated physical quantities against human-judged ground truth.

· Experience with human-object or human-scene interaction modeling.

Education

Ph.D. preferred in Computer Science, Robotics, Graphics, Mechanical Engineering, Physical Science, or a related field. Equivalent industry research experience may be considered.

Interested Candidates

Please send your updated resume and contact details to:

About PROLIM Corporation

PROLIM is a leading provider of end-to-end IT, PLM, and Engineering Services and Solutions for Global 1000 companies. We understand business as much as technology and help our customers improve profitability and efficiency through high-value consulting, staffing, engineering, and project management services.

Our offerings include Advisory Services, PLM Software & Services, Program Management, Solution Architecture, Training & Staffing, Cloud Solutions, Infrastructure Services, ERP Practices, Quality Assurance Services, and Engineering Services across a wide range of industries.