Sr. Manufacturing Engineer, Power Electronics

Rivianis 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.

As a Sr. Staff Manufacturing Engineer for Power Electronics, you will serve as the principal technical authority bridging internal Design Release Engineers (DREs), Manufacturing Engineering (ME), and external supplier/Contract Manufacturer (CM) partners. You will ensure that future suppliers are rigorously vetted and that their manufacturing capabilities, processes, and equipment setups are sufficiently robust, reliable, and scalable before sourcing decisions and design locks are finalized.

In this role, you will evaluate and vet suppliers manufacturing critical power electronics components, including high pressure die-cast housings, high-voltage busbars, LV/HV headers, seals, DC link capacitors, metal brackets, EMI filter cores, and power modules used across traction inverters, DC charging power electronics modules, and energy management control units (EMCUs). Additionally, you will drive DFM/DFx reviews, partner with automation/equipment

integrators on process development, validate equipment capability (Cp/Cpk, GR&R), and support pilot line stand-up through full NPI and production ramp.

This position is based at our Carson, CA facility and reports directly to the Power Electronics Mechanical Engineering Director.

• Lead end-to-end technical vetting, auditing, and approval of potential suppliers, CMs, and equipment integrators. Conduct process capability evaluations, run-at-rate audits, and facility reviews (on candidate line setups or equivalent production lines) to prove supplier capability matches ramp plans prior to sourcing

• Work side by side with mechanical design engineers to optimize power electronics assemblies for producibility, establish vendor-aligned design rules, reduce BOM cost and complexity, and resolve process risks prior to design freeze

• Evaluate and validate manufacturing processes, tooling, and fixtures across core supplier components, including high-pressure die castings, HV/LV headers and busbars, seals, DC link capacitors, metal brackets, EMI filter cores, and power modules

• Lead technical reviews of machine requirements and equipment designs with third-party automation suppliers. Drive formal equipment qualification processes, including system correlation, process capability analysis, and Gage Repeatability & Reproducibility (GR&R)

• Partner with internal manufacturing teams and sourced integrators on pilot line setups, shop layout optimization, Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT), and line handover for next-generation power electronics production lines (e.g.,900V EMCU and SPIM)

• Lead architecture reviews and design phase gate decisions, ensuring solutions are scalable, manufacturable and aligned with program objectives

• Design and engineer complex subsystems including high-pressure die castings, injection-molded plastics, busbars, sheet metal, HV/LV harnesses, sealing interfaces and PCBA mechanical integration

• Own the full mechanical release cycle in ENOVIA, governing data integrity, design maturity and BOM accuracy across multiple concurrent programs

• Drive weekly technical reviews with suppliers to resolve open design items, enforce DFM alignment, and maintain delivery commitments

• Act as the senior technical…