Robotics Simulation Engineer (Physical AI & Digital Twins)

Location: Atlanta, GA, USA; onsite role within the New Product Development Innovation Team.

Company

hirify.global develops software and automated order-fulfillment systems using robotics, connected technologies, and advanced warehouse automation.

What you will do

• Develop and run physics-based simulation environments using tools such as NVIDIA Isaac Sim, Gazebo, and MuJoCo for end-to-end testing of robots and Physical AI products.
• Build digital twins of hirify.global hardware and compare simulations with laboratory and field data to improve model fidelity.
• Set up software-in-the-loop and hardware-in-the-loop test benches, and integrate simulation test cases into regression and CI/CD pipelines.
• Develop scenario-generation and stress-testing methods to identify unknown failure modes and edge cases.
• Build automated workflows that enable engineers to perform what-if analyses and parameter sweeps without being simulation specialists.
• Generate synthetic data and simulation environments for training and evaluating perception and AI models, and communicate results and uncertainty to technical and non-technical audiences.

Requirements

• 3+ years of experience applying simulation in robotics, hardware engineering, or product development. A senior-level position is available for well-qualified candidates.
• Hands-on experience with physics-based robotics simulators such as NVIDIA Isaac Sim, Gazebo, MuJoCo, PyBullet, or Webots.
• Strong Python programming skills and experience automating simulation workflows and analyzing large result sets; C++ is a plus.
• Solid understanding of rigid-body dynamics, kinematics, sensors, and actuators.
• Experience with automated testing, including software-in-the-loop, hardware-in-the-loop, or simulation in CI/CD.
• Ability to collaborate across mechanical, electrical, controls, software, and AI engineering teams and explain results and uncertainty to technical and non-technical audiences.
• Bachelor’s degree or higher in Mechanical, Electrical, or Robotics Engineering, Computer Science, or a related field.

Nice to have

• Experience with photorealistic rendering and synthetic data generation using Isaac Sim Replicator, NVIDIA Omniverse, Unreal Engine, or Blender, or with reinforcement-learning environments such as Isaac Lab or Gymnasium.
• Familiarity with system identification, parameter estimation, sensitivity analysis, or uncertainty quantification.
• Experience with traditional FEA tools such as Ansys Mechanical or Abaqus and 3D CAD tools such as SolidWorks, Creo, or NX.
• Experience scaling simulations across GPUs, clusters, or cloud environments.
• Background in robotics, logistics automation, or other electromechanical systems.

Culture & Benefits

• Supportive and rewarding work environment with cross-disciplinary collaboration.
• Comprehensive medical, dental, and vision plans.
• Health Savings Account with a company contribution.
• Paid time off including 12 holidays, paid exercise time, paid volunteer time, and paid parental leave for all new parents.
• 401(k) plan with employer match and discretionary profit-sharing contribution.
• Educational assistance, professional development, mentorship, coaching, life and disability insurance, and employee assistance programs.