Lead Electromagnetic Design Engineer – Motors & Analysis

Rivian

Carson (CA)

On-site

USD 135,000 - 169,000

Full time

14 days+

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Benefits offered by this job

Annual bonus

Equity awards

401(k) plan

Comprehensive benefits

Job summary

Rivian is seeking an Electromagnetic Design, Analysis & Characterization Engineer on the Advanced Hardware team to own electromagnetic design, analytical modeling, and validation for traction motors and power electronics. You will use 2D/3D finite element analysis (FEA) with Ansys Maxwell or JMAG, develop advanced models, and validate them against hardware tests.

Collaboration with Thermal, Mechanical, NVH and Vehicle Integration teams will ensure reliability, efficiency and cost targets for

Qualifications

:
MS or PhD in Electrical Engineering, Applied Mathematics, or Physics with a core research focus on Electromagnetics, Magnetic Materials, Electric Machines, or Analytical Electromechanical Modeling.
2-5 years of experience on traction motor/magnetic insulation testing, electromechanical component design, and numerical math modeling.
Strong mathematical and analytical foundation with proven experience deriving and implementing physical equations for electromagnetic fields, loss optimization, or material degradation kinetics.
Proficiency with electromagnetic simulation software such as Ansys Electronics Desktop (Maxwell, Icepak) or JMAG.
Expert-level scripting skills in Python or MATLAB/Simulink for custom math model development, automated data post-processing, and laboratory equipment data automation.
Direct hands-on experience operating laboratory test equipment (e.g., impedance/LCR analyzers, high-voltage insulation/hipot testers).
Highly self-driven with a strong root-cause mindset to diagnose complex test-to-simulation discrepancies, identify fundamental failure modes, and leverage excellent cross-functional communication skills to translate complex electromagnetic data into actionable hardware design choices.

Responsibilities

Material-Level Testing: Design and execute laboratory testing pipelines for magnetic materials, and electric motor insulation materials.
Conduct experimental characterization of electrical steel laminations (B-H curves, core losses).
Execute accelerated thermal aging and dielectric breakdown studies on electrical machine insulation to evaluate long-term reliability and degradation mechanisms.
Analytical Modeling & FE Simulation: Develop and implement advanced analytical and numerical mathematical models to describe non-linear electromagnetic behavior; establish verification pipelines; integrate into large-scale FE simulations.
Electromagnetic Design & Simulation: Perform 2D/3D transient, magnetostatic, and frequency domain FE analysis using Ansys Maxwell or JMAG; optimize magnetic circuit topologies.
Multiphysics Co-Simulation: Conduct coupled simulations to evaluate electromagnetic performance under severe duty cycles and coordinate with Thermal, Mechanical, NVH, and Vehicle Integration teams.