Simulation Development Engineer II (Aerospace)

Location: Greater Seattle Area, United States. Applicants must meet U.S. export-control eligibility requirements.

Base pay for Washington applicants: $134,961–$188,945.40 per year. Other site ranges may differ.

Company

hirify.global develops reusable, safe, and low-cost space vehicles and systems, including the New Glenn heavy-lift orbital launch vehicle.

What you will do

• Design, implement, analyze, and revise mathematical models of New Glenn, the orbital launch site, and associated subsystems using first principles and test data.
• Develop real-time software-in-the-loop and hardware-in-the-loop simulation architectures and models.
• Create and maintain model documentation, databooks, and implementation materials for engineering teams.
• Support systems analysis and cross-functional architectural decisions across guidance, control, aerodynamics, propulsion, mechanical, fluid, electrical, and thermal domains.
• Develop verification and validation procedures and support component-level testing, integrated on-site testing, and post-test analysis.
• Prepare and operate the simulator during launch crew training sessions.

Requirements

• Bachelor’s degree in aerospace, computer science, electrical or mechanical engineering, physics, or a related field.
• 3+ years of relevant experience.
• Knowledge of dynamic modeling, including multibody dynamics, gas dynamics, fluids, and thermodynamics.
• Experience with Windows, Linux, Python, real-time operating systems, serial communications, IP networking, and embedded systems.
• Strong software and model development skills with MATLAB, Simulink, and Simscape; knowledge of C/C++ and Python.
• Hands-on experience with hardware-in-the-loop testing and test development.

Nice to have

• Experience with sensor modeling and electro-mechanical, hydraulic, pneumatic, or electrical subsystems.
• Experience fitting first-principles models to test data or high-fidelity external simulations using numerical methods.
• Experience developing and verifying physical models for control design, component sizing, and system performance evaluation.
• System engineering, configuration management, risk management, or lean software development experience.
• Familiarity with AI model integration, development, and optimization.

Culture & Benefits

• Culture focused on safety, collaboration, inclusion, trust, equality, and teamwork.
• Medical, dental, vision, life insurance, disability coverage, paid parental leave, and an education support program.
• 401(k) with company matching of up to 5% and stock options for regular employees working at least 20 hours per week.
• Up to four weeks of paid time off per year based on scheduled hours and up to 14 company-paid holidays.
• Benefits and bonuses may vary by role type and job level.