Sr. Range & Efficiency Development Engineer

About Rivian

Rivian is on a mission to keep the world adventurous forever. This goes for the emissions‑free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract.

As a company, we constantly challenge what’s possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our background is diverse, but our team shares a love of the outdoors and a desire to protect it for future generations.

The Range & Efficiency (R&E) Development Engineer supports the R&E Attributes process during final vehicle level validation sign off. Test planning, vehicle preparation and data analysis are part of the daily activities for this role. Support chamber, proving grounds and on‑road testing for R&E Attributes and through hardware/software development. Manage opening and closure of engineering concerns and issues throughout the vehicle life.

• Execute vehicle level static and dynamic efficiency test activities per test plans developed in collaboration with key internal stakeholders and external resources.
• Conduct 1D vehicle level simulations to optimize vehicle Powertrain efficiency, Vehicle aerodynamics, Thermal strategies and Tire rolling resistance under different ambient and operating conditions.
• Document findings and recommendations for range and efficiency improvements, providing actionable insights and design feedback for future product iterations.
• Run vehicle test procedures using hub and chassis dynamometer and complete post‑processing and data analysis.
• Responsible to instrument vehicles with the necessary data acquisition hardware for data collection.
• Work closely with software and hardware teams to make sure representative vehicle is being tested.
• Responsible for retrieving, storing, and sharing of logged data from tests with different teams.

• Hands‑on knowledge of dynamometer testing, coastdown testing is a plus.
• Capability to manage multiple tests activities in parallel for different programs.
• Working knowledge of vehicle communication network systems (CAN, LIN, Ethernet, etc.).
• Experience in 1D simulation, data analysis and test scripting/automation experience (C/C++, Python, MATLAB/Simulink).
• Experience in debugging and resolving hardware and software issues at vehicle level.
• Ability to instrument a vehicle and operate data acquisition systems such as CANalyzer & Hioki for data collection.
• Excellent communication skills in both technical and non‑technical environments.
• A strong desire to create the very best product, working as an integral part of a very capable team.
• BS (and preferably MS or PhD) in an engineering discipline.

• Experience with vehicle controls and power electronics.
• Experience with vehicle level chassis dyno testing.
• Experience with MATLAB and Simulink.

The salary range for this role is $121,500–151,900 for Southern California based applicants and $111,500–138,700 for Michigan based applicants. This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, geographic location, shift, and organizational needs.

The successful candidate may be eligible for annual performance bonus and equity awards.

We offer a comprehensive package of benefits for full‑time and part‑time employees, their spouse or domestic partner, and children up to age 26, including but not limited to paid vacation, paid sick leave, and a competitive portfolio of insurance benefits including life, medical, dental, vision, short‑term disability insurance, and long‑term disability insurance to eligible employees. You may also have the opportunity to participate in Rivian’s 401(k) Plan and Employee Stock Purchase Program if you meet certain eligibility requirements.

Full‑time employee coverage is effective on their first day of employment. Part‑time employee coverage is effective…