GNC Simulation Software Engineer

Job Title: GNC Simulation Software Engineer

Job Description

Design, analyze, and implement GNC algorithms and simulations for aerospace vehicles. Maintain and develop analysis tools, regression test scenarios, Monte Carlo framework, and simulation architecture. Perform 6-DOF modeling, simulation, and performance analysis to evaluate system behavior under both nominal and off-nominal conditions. Build high-fidelity dynamic models of vehicles, sensors, actuators, and environmental models. Conduct Monte Carlo analyses and sensitivity studies to validate robustness and reliability. Validate simulation models against test data and engineering expectations. Use programming languages including C/C++, Python, and Matlab (or similar) to develop simulations. Collaborate with embedded software teams to integrate, test, and verify GNC functionality on hardware-in-the-loop (HIL) systems. Support the development of requirements, interface definitions, and verification plans for flight software.

Responsibilities

• Design and implement GNC algorithms and simulations for aerospace vehicles.

• Maintain and develop analysis tools and simulation architecture.

• Perform 6-DOF modeling, simulation, and performance analysis.

• Build high-fidelity dynamic models of vehicles, sensors, and actuators.

• Conduct Monte Carlo analyses and sensitivity studies.

• Validate simulation models against test data.

• Collaborate with embedded software teams for GNC functionality integration.

• Support development of requirements and verification plans for flight software.

Essential Skills

• 5+ years of software experience.

• 5+ years in the aerospace industry.

• Proficiency in C++ and Python programming.

• Experience with NASA GUNNS and TRICK Simulation Software.

• Flight Vehicle Experience.

• Proficiency in Simulink and software development.

Job Type & Location

This is a Contract position based out of Houston, TX.

Pay and Benefits

The pay range for this position is $55.00 - $80.00/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: - Medical, dental & vision - Critical Illness, Accident, and Hospital - 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available - Life Insurance (Voluntary Life & AD&D for the employee and dependents) - Short and long-term disability - Health Spending Account (HSA) - Transportation benefits - Employee Assistance Program - Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a fully onsite position in Houston,TX.

Application Deadline

This position is anticipated to close on Jun 12, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 30,000 consultants and more than 4,500 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email View email address on click.appcast.io for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.