Senior Simulation Software Engineer

Job Description

We are seeking a Senior Simulation Software Engineer for the Digital Twin team with deep expertise in at least one major simulation environment (Unity, Unreal Engine, or NVIDIA Isaac Sim) and a willingness to learn others. In this role, you will design, build, and scale core software services and high‑performance 3D simulation environments, program NPC behaviors, and support automation workflows for autonomous robotics development. You will combine 3D programming with strong platform engineering to deliver reliable, low-latency simulations at enterprise scale.

What You’ll Do (Key Responsibilities)

• Develop and maintain simulation environments using Unity, Unreal Engine, or NVIDIA Isaac Sim

• Implement NPC programming and behavior logic to enable realistic interactions

• Own end-to-end features: requirements, architecture, implementation, testing, deployment, and observability

• Build high-performance 3D simulation modules (rendering, physics, spatial indexing) for scalable, real-time execution and integrate them with platform services

• Develop asset pipelines and tooling for ingesting, transforming, and optimizing complex 3D assets (e.g., USD, glTF) and scene graphs for real-time use

• Collaborate with robotics engineers and software developers to integrate simulation with automation pipelines

• Contribute hands-on to coding and code reviews, promoting clean code practices and secure development standards

• Troubleshoot and resolve technical issues in simulation frameworks

• Document workflows, tools, and best practices to enable cross-team adoption

Your Skills & Abilities (Required Qualifications)

• Bachelor’s or Master’s degree in Computer Science, Game Development, Robotics, or a related field

• 5+ years of software engineering experience, including 3D simulation development or game engine programming

• Expertise in at least one of: Unity3D, Unreal Engine, or NVIDIA Isaac Sim, with a willingness to learn others

• Proven experience productizing 3D software systems (e.g., rendering pipelines, physics, simulations, or digital twins)

• Strong skills in NPC programming and behavior scripting

• Proficiency in C#, C++, or Python, with strong foundations in computer graphics and linear algebra

• Solid CI/CD, version control (Git), and agile development practices

What Can Give You a Competitive Edge (Preferred Qualifications)

• Experience with robotics simulation and autonomous systems

• Knowledge of physics-based simulation and AI-driven behaviors

• GPU/compute expertise (HLSL/GLSL/Compute Shaders), materials/shaders, and graphics debugging tools (e.g., RenderDoc, PIX, Nsight)

• Experience in manufacturing, automotive, or industrial domains

• Knowledge of cybersecurity best practices for connected systems

This role is categorized as hybrid. This means the selected candidate is expected to report to a specific location at least 3 times a week {or other frequency dictated by their manager}. The selected candidate will be required to travel <25% for this role. This job may be eligible for relocation benefits.

About GM

Our vision is a world with Zero Crashes, Zero Emissions and Zero Congestion and we embrace the responsibility to lead the change that will make our world better, safer and more equitable for all.

Why Join Us 

We believe we all must make a choice every day – individually and collectively – to drive meaningful change through our words, our deeds and our culture. Every day, we want every employee to feel they belong to one General Motors team.

Benefits Overview

From day one, we're looking out for your well-being–at work and at home–so you can focus on realizing your ambitions. Learn how GM supports a rewarding career that rewards you personally by visiting Total Rewards resources.

Non-Discrimination and Equal Employment Opportunities (U.S.)

General Motors is committed to being a workplace that is not only free of unlawful discrimination, but one that genuinely fosters inclusion and belonging. We strongly believe that providing an inclusive workplace creates an environment in which our employees can thrive and develop better products for our customers.

All employment decisions are made on a non-discriminatory basis without regard to sex, race, color, national origin, citizenship status, religion, age, disability, pregnancy or materni