Senior Simulation Engineer

Role Overview

As a Simulation Engineer, you will develop closed-loop spacecraft test platforms and execute simulation testing strategies to validate and verify the performance, functionality, and reliability of satellite systems. You will collaborate with multidisciplinary teams to design, implement, and integrate realistic test environments using simulation and emulation tools.

What You Will Do

Own closed-loop spacecraft simulation platforms from initial design to deployment, develop and maintain core simulation capabilities, and collaborate with cross-functional teams to define test requirements and execute tests.

Why It Might Be a Fit

We are looking for motivated engineers who are eager to solve complex problems with a focus on practicality and scalability, and who thrive in a dynamic, fast-paced environment. You will have the opportunity to work on a critical component of our satellite buses and contribute to the success of our mission.

Requirements

• U.S. Person status
• Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Aerospace Engineering, or a related field
• 8+ years of experience developing closed-loop simulation tools
• Strong proficiency in programming languages such as C/C++, Rust, Python
• Comfortable operating and developing within Linux environments
• Familiarity with standard software development practices, including testing frameworks, Docker, CI/CD pipelines, and agile development
• Experience designing, implementing, and validating physics-based simulation models for closed-loop systems
• Experience emulating and integrating virtual sensors, actuators, and test equipment with serial interfaces, network interfaces, and conventional I/O interfaces
• Experience with data analysis techniques, automation tools, and pipeline development
• Strong analytical and problem-solving skills with keen attention to details
• Excellent verbal and written communication skills
• Proven ability to work independently and take ownership of technical deliverables
• Proven ability to work in a fast-paced and dynamic environment while delivering results

Benefits

• Shared upside: Receive equity in Apex
• Best-in-class healthcare: 100% company-paid medical, dental, and vision for you and your dependents, plus $100k life insurance at no cost
• Comprehensive PTO package to reset and recharge - starting at 15 days vacation, growing to 20+ days annually, plus 10 paid holidays
• Competitive 401(k) plan with generous matching - 100% match on first 3%, 50% on next 2%
• 8 weeks paid parental leave plus childcare reimbursement up to $350/day for work-related travel
• Daily catered lunch and unlimited snacks to keep you fueled throughout the day
• Vibrant community: Monthly office socials, pickleball tournaments, run club, and gatherings for you and your family
• Your dream desk setup and all the tools you need to be your most productive self
• World-class Playa Vista office with the benefit of in-person collaboration with amazing coworkers and flexibility to integrate work and life
• Real impact opportunity: Work alongside experts from aerospace, new space, and other cutting-edge industries to make a lasting difference