About The Role What if the physics simulations you build could teach the next generation of robots how to walk, grasp, and navigate the real world? We're looking for Robotics Simulation Engineers in the Toronto area to design, build, and optimize high-fidelity physical simulations that bridge the gap between virtual environments and real-world robotic systems. Toronto's strength in AI research and robotics — anchored by world-class universities and a thriving tech sector — makes it a prime location for this work.

You'll work at the intersection of robotics, physics, and software engineering, creating simulation pipelines that power robot learning, controls development, and hardware validation. This is a fully remote, flexible contract role. No corporate red tape — just meaningful, technical work on problems that matter.

Type: Hourly Contract

Location: Remote

Commitment: 10–40 hours/week What You'll Do Design and implement high-fidelity robot models (URDF/MJCF) with accurate kinematics, dynamics, and contact properties

Build and maintain simulation environments using MuJoCo, NVIDIA Isaac Sim, and/or Gazebo

Develop end-to-end simulation pipelines for robot training, testing, and validation

Tune physics parameters — friction, damping, inertia, actuator models — to maximize sim-to-real transfer

Integrate simulations with ROS2 for perception, planning, and control workflows

Write clean, performant code in Python and/or C++ to support simulation infrastructure

Collaborate asynchronously with robotics researchers and engineers on model accuracy and environment design

Profile and optimize simulation performance for large-scale or parallelized runs

Document simulation configurations, model parameters,



and pipeline architecture Who You Are Solid hands-on experience with at least one major robotics simulator: MuJoCo, NVIDIA Isaac Sim, or Gazebo

Proficient in Python and/or C++ in a robotics or scientific computing context

Solid understanding of rigid-body dynamics, contact mechanics, and control theory

Experience creating and validating robot models (URDF, MJCF, or SDF formats)

Familiarity with ROS2 and its integration with simulation environments

Comfortable working with simulation pipelines — from environment setup to data collection and evaluation

Self-directed, detail-oriented, and effective when working independently

Strong problem-solving instincts and a drive to close the sim-to-real gap Nice to Have Experience with domain randomization, sim-to-real transfer techniques, or reinforcement learning in simulation

Familiarity with GPU-accelerated simulation (e.g., Isaac Gym, MuJoCo MJX)

Background in legged locomotion, manipulation, or multi-body systems

Experience with CI/CD for simulation testing and automated validation

Knowledge of sensor simulation — cameras, LiDAR, IMUs, force/torque sensors

Contributions to open-source robotics or simulation projects

Graduate-level coursework or research in robotics, controls, or computational physics Why Join Us Work on cutting-edge robotics simulation projects that directly impact how robots learn and perform

Fully remote and flexible — work when and where you're most productive

Freelance autonomy with technically challenging, meaningful work

Collaborate with a global community of robotics and AI professionals

Gain exposure to state-of-the-art simulation frameworks and research-grade problems

Potential for ongoing work and contract extension as new projects launch

📌 Robotics Simulation Engineer (Toronto)
🏢 Alignerr
📍 Toronto