Software Engineer - Simulation

We build the simulation infrastructure for physical AI. We develop GenAI-powered tools that enable robotics teams to create unlimited, diverse training data and realistic evaluation environments. Our team spun out of MIT CSAIL, where we pioneered techniques that trained robots using only synthetic data. We're helping robotics companies transition to AI-native development workflows.

We're a lean team of researchers and engineers from DeepMind, OpenAI, FAIR, and top universities including MIT, Berkeley, Caltech, Harvard, and Yale. We've published best papers at top robotics conferences, won International Olympiad medals, and built core systems at leading AI labs. We believe in building complex systems that bring simplicity to our customers.

Global Team: We operate across US and China time zones. We value people who communicate proactively, document thoroughly, and take ownership of smooth handoffs across teams.

We're looking for a Simulation Engineer to build and scale our physics simulation infrastructure. You'll work on sim-to-real transfer, domain randomization, and creating training environments that enable robots to learn in simulation and perform in the real world.

Build and maintain simulation environments using MuJoCo, PyBullet, and Isaac Lab

Develop sim-to-real transfer pipelines and domain randomization systems

Create scalable infrastructure for parallel simulation execution

Design RL training environments with realistic physics and diverse scenarios

Collaborate with ML researchers on environment design for policy learning

3-5 years of experience with physics simulation or robotics software

Proficiency with MuJoCo, PyBullet, Isaac Lab/Sim, or similar engines

Strong Python skills; familiarity with C++ for performance-critical code

Experience with reinforcement learning training pipelines

Understanding of robot dynamics, kinematics, and control

Experience with sim-to-real transfer in deployed robotics systems

Background in domain randomization and synthetic data generation

Familiarity with GPU-accelerated simulation (Isaac Gym, Brax)

Publications or projects in robot learning

We believe diverse teams build better products. Even if you don't meet every requirement listed, we encourage you to apply if you're excited about this role and our mission.