Motorsports Vehicle Testing & Performance Engineer

Job Description At GM Motorsports, we are driven by a clear purpose: to accelerate our teams’ ability to win on the racetrack and in the marketplace. Our vision is to be the benchmark of global motorsports excellence, inspiring enduring passion for our brands and products through world-class performance, innovation, and teamwork. We are looking for people who share our mindset and core values — ownership in organizational success, a commitment to add value to our team, and the courage to reject mediocrity in pursuit of exceptional results. The Role GM Motorsports is seeking a Motorsports Vehicle Testing & Performance Engineer to drive the preparation, execution, and analysis of vehicle testing across trackside, simulated, test-rig, bench, and virtual environments. This experienced individual-contributor role will translate engineering analysis and test data into actionable direction that improves vehicle performance. You will work at the intersection of vehicle testing, simulation, data analysis, and race-team execution, partnering closely with the test team crew chief, project manager, GM engineering organizations, mechanics, and key partner race teams. The position will initially focus primarily on NASCAR-type racing programs, with potential opportunities to support additional series, including IMSA/WEC and IndyCar. This role offers the opportunity to directly influence race-vehicle performance while working across trackside testing, simulation, and advanced test-rig environments. What You’ll Do Lead Test Planning and Trackside Execution • Take ownership of engineering preparation for trackside, simulated, test-rig, bench, and virtual testing activities. • Partner with the test team crew chief and project manager to define test objectives, develop test plans and test matrices, and coordinate vehicle and test-event readiness. • Use GM offline simulation tools, driver-in-loop (DiL) simulation, aerodynamic information, and previous test and race data to define test direction and priorities. • Coordinate effectively with engineers, mechanics, and partner teams during time-sensitive testing activities. Drive Data Analysis and Performance Development • Lead vehicle-data analysis using motorsports data-analysis tools such as Pi Toolbox, MoTeC i2, McLaren ATLAS, or equivalent platforms. • Translate test and simulation results into clear conclusions, performance recommendations, and engineering direction. • Work directly with key partner race teams at trackside testing events to deliver timely, data-driven feedback that improves performance. • Drive simulation-correlation activities and evaluate the performance impact of vehicle, setup, or process changes. Advance Vehicle Testing and Integration • Plan and execute engineering activities involving SPMM, kinematic, and center-of-gravity rigs, as well as bench, DiL, and simulation environments. • Collaborate with the GM Vehicle Integration Engineering and Testing team to connect vehicle-level test results with broader development objectives. • Develop or improve analysis tools and workflows that reduce analysis time, improve data quality, or increase test-team effectiveness. • Identify opportunities to improve how GM Vehicle Integration Engineering and Testing delivers performance value to key partner race teams. Communicate and Deliver Projects • Deliver clear, concise, data-driven pre-test, event, and post-test reports that document methods, results, conclusions, and supporting evidence. • Present technical findings and recommendations clearly to GM personnel, partner teams, and other stakeholders. • Build trusted working relationships with engineers, mechanics, crew members, project managers, and external partner teams. • Manage multiple priorities and complete p