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Propulsion System Simulation Engineer

Irvine, United States

We're ALTEN Technology USA, an engineering company helping clients bring groundbreaking ideas to life—from advancing space exploration and life-saving medical devices to building autonomous electric vehicles. With 3,000+ experts across North America, we partner with leading companies in aerospace, medical devices, robotics, automotive, commercial vehicles, EVs, rail, and more.

As part of the global ALTEN Group—57,000+ engineers in 30 countries—we deliver across the entire product development cycle, from consulting to full project outsourcing.

When you join ALTEN Technology USA, you'll collaborate on some of the world's toughest engineering challenges, supported by mentorship, career growth opportunities, and comprehensive benefits. We take pride in fostering a culture where employees feel valued, supported, and inspired to grow.

Propulsion System Simulation Engineer

Overview
As a Propulsion System Simulation Engineer, you will support Rivian's R1 2026/27 programs by performing detailed simulations of battery pack performance, discharge, durability, and charging behavior. You will track simulation results and next-step actions, ensuring continuity and accurate modeling while other team members focus on concurrent pack programs (R3 900V, R2 900V, R1 900V).

Key Responsibilities

Conduct propulsion system simulations for R1 2026/27 battery packs, including discharge, durability, and charging behavior analysis.
Track simulation results and identify next-step actions to inform testing and design decisions.
Profile and manage simulation workload, ensuring smooth handover to future permanent hires for ongoing programs.
Collaborate with cross-functional teams to integrate simulation results with engineering analysis, validation, and design activities.
Maintain accurate documentation of simulation parameters, results, and recommended actions.
Support continuous improvement of simulation workflows and modeling accuracy.
Ensure simulations adhere to project timelines and engineering standards.

Qualifications

Bachelor's or Master's degree in Mechanical, Electrical, or Systems Engineering, or a related field.
5+ years of experience in battery, EV propulsion, or energy storage system simulation.
Proficiency in simulation tools relevant to battery performance, durability, and charging (MATLAB/Simulink, Python, or equivalent).
Strong analytical skills and ability to interpret complex data to inform engineering decisions.
Excellent documentation and communication skills for cross-functional collaboration.

Preferred Skills

Experience with battery pack modeling for R1 2026/27 or similar EV propulsion systems.
Familiarity with multi-program simulation coordination and workload management.
Knowledge of battery cell, module, and pack electrical/thermal behavior.
Experience in developing workflows for DCFC, discharge profiling, or durability simulations.
Ability to support handover and knowledge transfer to new team members or permanent hires.

Salary Range: $120,000-$135,000

The actual salary offered is dependent on various factors including, but not limited to, location, the candidate's combination of job-related knowledge, qualifications, skills, education, training, and experience

ALTEN Technology is an Equal Opportunity Employer. Our Policy is to extend opportunities to qualified applicants and employees on an equal basis regardless of an individual's age, race, color, sex, religion, national origin, disability, sexual orientation, gender identity/expression or veteran status.

Please beware of job seeker scams and see this important notice on our careers page for more information about our recruiting process.

Compliance Notice: Alten USA is a federal contractor subject to the requirements of the Vietnam Era Veterans' Readjustment Assistance Act (VEVRAA) and Executive Order 11246. We are an Equal Opportunity Employer and consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.

Drug Screening Requirement: As a federal contractor, Alten USA maintains a drug-free workplace. All candidates selected for employment will be required to successfully complete a pre-employment drug screening as a condition of hire.

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