Senior Simulation Engineer

we’ve partnered with a cutting-edge robotics company building next‑generation, multi‑purpose robots designed to move, think, and work safely alongside humans. As the team scales its r&d efforts, they’re looking for a senior simulation engineer to focus on physics‑accurate simulation, digital twins, and real‑to‑sim / sim‑to‑real workflows that directly inform hardware and controls decisions. This role sits at the intersection of first‑principles physics, modern simulation, and production‑quality python code.

• build and maintain high‑fidelity robotic simulation environments using modern physics simulators such as isaac lab / isaac sim or mujoco
• develop full‑body dynamics models, contact interactions, and friction models that reflect real‑world behavior
• create reproducible python-based workflows for simulation studies, validation, and deployment across machines
• support digital twin development, connecting physical systems to accurate simulated counterparts
• validate simulation outputs against first‑principles physics, mechanical specifications, and real hardware data
• collaborate closely with mechanical, controls, and systems engineers to accelerate iteration cycles and improve hardware performance

• strong foundation in physics and mechanics (degree in physics, mechanical engineering, robotics, or a closely related field)
• comfortable working from first‑principles (e.g., newtonian mechanics, dynamics, forces, moments)
• experience writing clean, performant, production‑grade python with a strong use of numpy; experience interfacing python with simulation frameworks
• hands‑on experience with modern robotic simulators (isaac lab, isaac sim, or mujoco)
• demonstrated ability to ship reproducible simulation code, not just prototypes
• minimum 2+ years of relevant industry or research experience

• experience packaging and shipping code so it can run on other machines (e.g., docker)
• experience modeling contact dynamics (collisions, multi‑body interactions, impact loads)
• prior work on digital twins tied to physical robotic systems
• exposure to reinforcement learning is a plus, but not a core requirement

* candidate experience is important to us. This is a real job. We do not use ai to screen applications or to interview. Your application will be read and assessed by a human. We respond to all applications.*