Digital Twin Software Engineer: Robotics Simulation

Walkthrough.ai; San Francisco; On-site; ARS 181,094,000 - 271,641,000; Full time

Job summary

Menlo Research is seeking a Software Engineer, Digital Twin, to own environments, tooling, and pipelines for Asimov’s virtual counterpart across MuJoCo, Isaac Sim, and Unreal Engine.

You will build high‑fidelity digital twin environments calibrated to real hardware, design scalable validation pipelines, and contribute to open‑source simulation stacks.

Collaborating with locomotion, autonomy, and hardware teams, you will accelerate policy development and close the sim‑to‑real gap.

Qualifications

• Hands-on experience building or maintaining simulation environments in MuJoCo, Isaac Sim, or similar engines.
• Proficiency in Python and C++.
• Solid understanding of rigid body dynamics and how simulator parameters translate to physical hardware behavior.
• Familiarity with ROS2 and common robotics data formats.

Responsibilities

• Build and maintain high-fidelity digital twin environments for Asimov across MuJoCo, Isaac Sim, and Unreal Engine, calibrated to real hardware behavior.
• Design and own the systems – not just the environments – that let locomotion, autonomy, and perception teams generate, validate, and iterate on simulation scenarios at scale.
• Build pipelines for asset import, USD and MJCF workflows, sensor modeling, and real-to-sim calibration to keep digital twins synchronized with evolving hardware.
• Develop photorealistic rendering pipelines in Unreal Engine for synthetic data generation and perception model training.
• Work with hardware and mechatronics teams to model actuator dynamics, contact physics, and structural behavior, ensuring simulation parameters reflect physical ground truth.
• Integrate digital twin environments with Menlo’s locomotion training pipeline (Cyclotron) and autonomy stack, enabling teams to run experiments and close the sim-to-real gap.
• Contribute to the open-source Asimov simulation stack, including tooling, documentation, and reproducible environment workflows.

Skills

Python

C++

Robotics simulation

ROS2

Tools

MuJoCo

Isaac Sim

Unreal Engine

USD

MJCF

Job description

Menlo Research is seeking a Software Engineer, Digital Twin, to own environments, tooling, and pipelines for Asimov’s virtual counterpart across MuJoCo, Isaac Sim, and Unreal Engine.

You will build high‑fidelity digital twin environments calibrated to real hardware, design scalable validation pipelines, and contribute to open‑source simulation stacks.

Collaborating with locomotion, autonomy, and hardware teams, you will accelerate policy development and close the sim‑to‑real gap.