Software Engineer, Systems Simulation & Test
General MatterLos Angeles, CA
Full Time
Posted February 27, 2026
$100k - $200k
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Listing evidence and provenance
- Source
- Greenhouse View original listing
- Freshness
- Open in the current public read path; this is not an employer guarantee.Last observed October 5, 2026
- Classification
- Modern power-system classification not yet published for this listing.Legacy source industry field: Nuclear Energy
- Pay provenance
- Employer-provided pay
Job Description
We are seeking a Simulation Software Engineer to design and build the high-fidelity simulators that model our physical systems, hardware, and control behavior.
Key Responsibilities
- Architect and own simulators for large, distributed systems with complex interactions, feedback loops, and failure modes.
- Model system dynamics and control behavior across nominal and off-nominal operating conditions.
- Build scalable infrastructure for high-volume simulation, scenario generation, and automated validation.
- Define correctness criteria and validate simulation outputs against test and real-world data in partnership with systems and hardware teams.
- Support hardware-in-the-loop (HIL) and software-in-the-loop (SIL) testbeds that exercise control and system software against simulated plant behavior.
Requirements
- Bachelor’s degree or higher in Computer Science, Electrical Engineering, Mechanical Engineering, Physics, or a related field.
- 7+ years of experience building simulators for complex, real-world systems.
- Strong programming skills in C++ and/or Python with experience handling large data flows.
- Deep understanding of modeling distributed systems, control systems, or physical processes.
- Experience validating simulations against empirical data or hardware-in-the-loop setups.
- High standards for correctness, robustness, and engineering rigor.
- Experience simulating industrial, aerospace, energy, or similarly complex systems (e.g., chemical plants, rockets, power grids).
- Background in control theory, numerical methods, or systems modeling.
- Experience running large-scale simulations for design validation or fault analysis.
- Familiarity with performance optimization and parallel or distributed simulation.
- Familiarity with automated test frameworks and continuous integration for simulation and test workflows.
- Hands-on experience with HIL/SIL testbeds, including working knowledge of the underlying physical systems, instrumentation, and hardware interfaces they exercise.
- Experience operating in high-stakes, safety-critical engineering environments.
- Demonstrated technical leadership in setting engineering standards and building and mentoring high-performance engineering teams.
- Ability to work extended hours and weekends as necessary.
- Ability to come into our office every day. This role is 100% on site and in person.
- Currently a US Citizen with capability to obtain and maintain a US Q clearance.
Benefits & Perks
- The base salary range for this role is $100,000–$200,000 annually.
- Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. Please note that the stated salary range is an estimate and may be adjusted based on market conditions, business needs, or other factors. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan.
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