Physics Simulation Engineer (Robotics)

Location: London, United Kingdom; hybrid

Company

hirify.global develops Genesis-World, an open-source general-purpose simulation platform for physical AI and robotics.

What you will do

• Develop production-ready physics simulation capabilities for robot-learning pipelines.
• Improve simulation speed through adaptive fidelity, larger stable timesteps, and structure-aware solvers.
• Expand multi-physics coverage across rigid bodies, deformable materials, fluids, particles, cloth, and other physical systems.
• Improve fidelity, scalability, and two-way coupling between heterogeneous solvers.
• Write Python-based physics kernels accelerated across CUDA, AMD ROCm, Apple Metal, Vulkan, x86, and ARM64 backends.
• Validate methods using analytical closed forms, cross-engine comparisons, and real-world data.

Requirements

• Strong background in physics-based simulation, preferably in robotics, including RBD, FEM, MPM, SPH, IPC, XPBD, VBD, or ABD.
• Experience with constrained optimization and numerical integration of stiff systems.
• Track record of shipping simulation code used by others in an engine, industrial environment, or research codebase.
• Solid CPU and/or GPU high-performance computing experience.
• Ability to assess numerical methods based on their practical performance, not only their theoretical complexity.
• Rigor in analytical, cross-engine, and real-world validation.

Nice to have

• Publications in simulation, graphics, or robotics venues such as SIGGRAPH, ICRA, IROS, CoRL, or RSS.
• Contributions to an open-source physics engine.

Culture & Benefits

• Hybrid work in London.
• Work on an open-source platform intended for companies, research labs, and individual developers.
• Applied research spanning algorithms, production code, testing, and documentation.
• Opportunity to contribute to scalable physical AI and robot-learning infrastructure.