Senior Simulation Software Engineer

• We are looking for a Senior Simulation Software Engineer to build and scale the simulation infrastructure that powers our autonomous vehicle development
• You will architect simulation pipelines, leverage AI agentic workflows to analyze simulation results, and drive improvements in simulation fidelity to validate autonomy systems and enable critical program milestones
• This role offers the opportunity to drive immediate user value while building advanced, AI-powered frameworks for long-term safety validation
• Design and build AI agentic workflows that automatically analyze simulation results, identify failures, and surface root causes across large-scale test runs, translating them into actionable insights for engineering teams
• Architect and build scalable simulation pipelines, including the metric evaluation framework, and conduct in-depth analysis of road test and simulation data to identify trends, anomalies, and key performance indicators that enhance model accuracy and validate autonomy performance
• Identify, quantify, and reduce sources of divergence between simulation and real-world behavior, leveraging AI and data-driven techniques to increase simulation fidelity across actor behaviors, sensor models, and system dynamics
• Monitor and improve the performance, scalability, testing, and reliability of the platform
• Collaborate with cross-disciplinary teams—including simulation, onboard, systems engineering, and data science—to reproduce and resolve issues encountered during real-world road tests
• Work with other engineers to design the long-term architecture of the system
• Ensure that technical work meets customer requirements, regulatory standards, and company quality policies, in accordance with the company’s Quality Management System (QMS), and contribute to continuous improvement efforts

Benefits

• Unlimited PTO: Unlimited paid time off on top of company holidays to recharge and enjoy as needed
• Flexible working: Flexibile work arrangements and technology to help manage life’s demands at the office and remote
• Health benefits: Tiered options in medical, dental, and vision insurance to fit your unique needs
• Future building: Equity, 401k and FSA options for all eligible employees to help build for your future
• Professional development: Company-sponsored professional development opportunities such as conferences, training, and workshops
• Catered lunches: Daily catered lunches at both of our Santa Clara and Fremont offices

• Experience building LLM-powered or agentic workflows for data analysis, evaluation, or automation
• Proficient in Python or C++, with experience building scalable data processing systems or evaluation frameworks
• Experience quantifying or improving simulation fidelity / closing the sim-to-real gap (e.g., sensor modeling, actor behavior modeling, scenario generation)
• Excellent communication skills and the ability to collaborate effectively in a team setting
• MS with 3+ years of relevant experience, or a PhD new grad, in mechanical, electrical, aerospace engineering, physics, computer science, or a related field
• Ability to solve open-ended technical challenges
• Experience with autonomous vehicle or robotics simulation and related concepts
• Familiarity with LLM agent frameworks (e.g., LangChain, LangGraph, or similar) and prompt/tool-orchestration patterns
• Experience developing metrics, user-facing APIs, or interfaces between system components