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Seasonal Simulation Software Engineer Jobs (NOW HIRING)

K2 Space

Simulation Software Engineer

Los Angeles, CA · On-site

$123K - $200K/yr

... software engineering * Master's or PhD in physics, aerospace engineering, or a STEM field * Experience working in Rust production environments * Experience defining and creating simulation systems

K2 Space

Simulation Software Engineer

Los Angeles, CA · On-site

$123K - $200K/yr

... software engineering * Master's or PhD in physics, aerospace engineering, or a STEM field * Experience working in Rust production environments * Experience defining and creating simulation systems

Toyon

Simulation Software Engineer

Goleta, CA · On-site

$110K - $180K/yr

Toyon is seeking a highly motivated software engineer to develop and maintain an internal space systems modeling and simulation application written in C++. The candidate will also deploy scripted ...

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How much do seasonal simulation software engineer jobs pay per year?

As of May 30, 2026, the average yearly pay for seasonal simulation software engineer in the United States is $137,846.00, according to ZipRecruiter salary data. Most workers in this role earn between $104,000.00 and $162,000.00 per year, depending on experience, location, and employer.
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Simulation Software Engineer

General Matter

Los Angeles, CA • On-site

Full-time

Posted yesterday

Job description

Job Summary:
General Matter is enriching uranium in America, aiming to design and operate the world’s lowest-cost enrichment services. The Simulation Software Engineer will design and build high-fidelity simulators for critical physics and hardware system modeling, working closely with engineering teams to enhance testing and simulation capabilities.
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.
Qualifications:
Required:
• BS in Computer Science, Electrical Engineering, Mechanical Engineering, Physics, or related field (advanced degree preferred).
• 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.
• Ability to work extended hours and weekends as necessary.
Preferred:
• 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.
• Experience operating in high-stakes engineering environments where correctness is critical.
Company:
General Matter is a nuclear energy company that produces enriched uranium fuel for nuclear energy applications. Founded in 2024, the company is headquartered in San Francisco, USA, with a team of 11-50 employees. The company is currently Early Stage.

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