Job Summary:
1X is a company focused on building humanoid robots that assist with household tasks. They are seeking a Software Engineer - Simulation to develop and maintain simulation environments that enhance robot learning while reducing reliance on physical evaluations.
Responsibilities:
โข Build and maintain the simulation environments and real-time infrastructure that accelerate robot learning at 1X, reducing dependence on physical robot evaluations, scaling synthetic data production, and ensuring policies trained in simulation transfer reliably to real hardware.
โข Deliver diverse, physically realistic simulation environments for NEO that enable the AI team to develop and evaluate new policies without requiring real robot time for every iteration
โข Measurably narrow the sim-to-real gap through domain randomization, calibration, and environment fidelity improvements, such that policies trained in simulation transfer reliably to deployed hardware
โข Scale synthetic data production to meet the AI team's training needs, with infrastructure that generates diverse, high-quality simulation data efficiently and reproduces environments reliably
โข Enable the hardware team to prototype and virtually test new robot hardware in simulation before manufacturing, reducing design iteration cycles and surfacing issues earlier.
Qualifications:
Required:
โข 4+ years of experience programming in Python, C++, or similar languages, with experience building environments or benchmarks using robotics simulators (MuJoCo, PyBullet, Isaac Sim, or equivalent)
โข Experience improving the performance of physics simulators or OpenGL rendering pipelines
โข Strong testing practices for simulation stacks used in robot learningโcomfortable writing tests that verify physical correctness and catch regressions
โข Advanced degree (MS or PhD) in Computer Science or a related field
โข Physics simulation depth understanding what makes a simulator physically accurate and computationally tractable; knows how to tune contact dynamics, articulated body models, and rendering fidelity for robot learning applications
โข Sim-to-real instincts having practical experience narrowing the gap between simulated and real behavior; knows which differences matter for policy transfer and which can be addressed through domain randomization
โข Performance-oriented engineer optimizing physics and rendering pipelines to maximize simulation throughput; thinks carefully about the tradeoff between fidelity and speed for different use cases
โข Rigorous infrastructure builder writing tested, maintainable simulation code that other teams can depend on; treats correctness and reliability of the simulation stack as a first-class engineering concern
Preferred:
โข Knowledge of extrinsic and intrinsic calibration algorithms for robotics, and experience using calibration to improve sim-to-real fidelity
โข Experience with domain randomization, procedural environment generation, or other techniques for scaling diverse simulation data production
โข Familiarity with differentiable simulation or GPU-accelerated physics (Warp, JAX-based simulators) for high-throughput parallel training
โข Background in legged locomotion, dexterous manipulation, or contact-rich robotics where simulation accuracy is most critical
Company:
1X is an engineering and robotics company that develops humanoid robots designed to work alongside humans. Founded in 2014, the company is headquartered in Moss, NOR, with a team of 201-500 employees. The company is currently Growth Stage.