Thermal Analysis Engineer

Irvine, CA /
Propulsion – Propulsion /
Full Time
This is what you’ll do:
- Developing, executing, validating and maintaining simulation models of thermal systems architecture including but not limited to powertrain cooling, thermal, controls, and battery system
- Own and maintain all models and libraries to be implemented for thermal systems
- Developing and maintaining regression testing to ensure model validity at all times
- Collaborate tightly with validation team to ensure efficient implementation and validation of new features, components and systems
- Using commercial tools perform 3D/1D analysis of various powertrain components such as motor water jacket analysis, cooling system, airflow simulation, pumps, Heat Exchanger sizing
- Collaborate with Body Exterior team and cross-functional support areas to ensure robust design and integration of active grill shutters and sub-systems
- With thermal architect, define the following components for the thermal system including but not limited to:
o   Hoses
o   Pumps
o   Cabin heater
o   Air Conditioning Control Module (HV)
o   Heat exchanger(s)
o   Refrigerant lines
o   Sensors/solenoids/valves
- Develop and validate 1-D simulation models of vehicle cabin, A/C sub-system, and heater subsystem to wind tunnel tests
- Work closely with suppliers to accurately size heat exchangers and ensure all system performance requirements are met
- Coordinate work with powertrain, systems and components, Interior and other functional teams
This is what you’ll need:
- Advanced degree (MSME) in Mechanical Engineering with specialty in refrigerant cycle, heat transfer, thermodynamics & fluid mechanics preferred
- Full understanding of vehicle thermal management concepts, including flow architecture, heat rejection methods, and basic climate control functions
- Strong first principle background of heat transfer and thermo-fluids
- 5+ years of experience in automotive powertrain cooling systems development and thermal component design including at least one full product lifecycle from concept through production for HEV, PHEV or BEV;
- Hands-on experience of cooling system components such as radiator, heater, cooling fans, sensors, pumps, valves and Liquid-to-liquid heat exchangers is a must
- EV Thermal system component, vehicle level testing experience is highly beneficial
- Use of 1D software such as AMESim or equivalent 1D simulation software
- Use of CFD software such as STARCCM+
- Proficient in MATLAB/Simulink

This is where you’ll work:
Department: Thermal
Location: Irvine, CA

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 backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it for future generations.
We operate development centers in Plymouth, MI, Irvine CA and San Jose, CA, and Surrey, England, as well as a manufacturing facility in Normal, Illinois.
Rivian is an Equal Opportunity Employer and Prohibits Discrimination and Harassment of Any Kind: Rivian is committed to the principle of equal employment opportunity for all employees and to providing employees with a work environment free of discrimination and harassment. All employment decisions at Rivian are based on business needs, job requirements and individual qualifications, without regard to race, color, religion or belief, family or parental status, or any other status protected by the laws or regulations in the locations where we operate. Rivian will not tolerate discrimination or harassment based on any of these characteristics. Rivian encourages applicants of all ages.