US Deorbit Vehicle GN&C Simulation Engineer

Amentum; Houston (TX); On-site; USD 95,000 - 135,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Job summary

Amentum is seeking a US Deorbit Vehicle GN&C Simulation Engineer to support NASA’s USDV team. You will develop and validate GN&C simulations, model data, and support verification activities for ISS visiting vehicle guidance systems.

The role requires strong coding skills (C/C++, Python), Linux experience, and familiarity with GN&C concepts. You will collaborate with a multi-company team and interact with NASA stakeholders.

Qualifications

• Bachelor's degree in Engineering or related field.
• 2–5 years of experience in GN&C or simulation.
• Experience with Linux, C/C++, FORTRAN, and Python.
• Experience with version control systems.
• Knowledge of orbital mechanics and GN&C principles.
• Ability to develop, verify, and validate math models and simulations.
• Strong communication and documentation skills.
• Ability to work in a multi-company team environment.

Responsibilities

• Provide math modeling, simulation development, integration, and testing of USDV GN&C systems.
• Perform and document simulation verification and validation (V&V).
• Create and deliver math model and simulation documentation.
• Identify tasks, resolve simulation issues, and assist team members.
• Interact with NASA customers and contractors during technical meetings.

Skills

Linux

C/C++

FORTRAN

Python

Version control

GN&C concepts

Mathematical modeling

Education

ABET accredited engineering program

MS in Aerospace Engineering (preferred)

Tools

MATLAB/Simulink

Git/GitLab

SOMBAT

JSC TRICK

NPR-7150.2

Job description

Are you passionate about human space exploration, understanding the origins of the universe, and working with a passionate and diverse team to make a difference? If you are, we need you!

We need your talent, teamwork, and energy to help us achieve great things that inspire people all over the globe. We need you to bring creative ideas and diverse backgrounds to help us envision, shape, and deliver systems that will enable the exploration of space while benefiting people here on Earth. We are excited about what we do, and we need you on our team as we take on exciting challenges for NASA’s pursuits in deep space exploration. As NASA’s largest engineering solutions provider working together with NASA at centers across the United States.

We have an exciting opportunity for a US Deorbit Vehicle GN&C Simulation Engineer to join the JETS II contract with Oceaneering, a teammate company.

This position will work on the US Deorbit Vehicle (USDV) Team providing sim and modeling support of the USDV ISS visiting vehicle Guidance, Navigation, and Control (GN&C) systems in support of the final mission to the International Space Station (ISS). The selected applicant will:

• Provide math modeling, simulation development, integration, and testing of USDV GN&C systems using an established software process.

• Perform and document simulation verification and validation (V&V)

• Create and deliver math model and simulation documentation

• Identify team simulation tasks, resolve simulation issues, and assist team members

• Directly interact with the NASA customers and contractors during technical meetings and working groups

• Maintain relationships with a diverse technical team

• Perform other duties as required.

Requisition Qualifications:

• Typically requires a bachelor's degree in Engineering and a minimum of 2- 5 years of experience in the field or in a related area.

• Bachelor's degree in engineering (or a related field) from an ABET accredited engineering school

• Experience with Linux, C/C++, FORTRAN, and Python

• Experience with version control systems

• Experience with orbital mechanics and GN&C principles

• Experience developing, verifying, and validating math models and simulations

• Knowledge in the development of GN&C algorithms and spacecraft system analysis

• Ability to apply knowledge/experience towards timely completion of technical products & services

• Excellent communication and documentation skills

• Ability to work in a multi-company team environment

• Strong leadership skills

Requisition Preferences:

• MS in Aerospace Engineering with a focus on GN&C, flight controls, and orbital mechanics

• Experience with spacecraft rendezvous, proximity operations, and docking

• Experience with the Station/Orbiter Multibody Berthing/Docking Analysis Tool (SOMBAT)

• Experience with Git/GitLab

• Experience with JSC TRICK Simulation Environment

• Experience with NASA NPR-7150.2

• Experience with simulation visualization and graphics packages

• Experience in product delivery and management

• Experience with requirements management tools

• Proficiency in MATLAB/Simulink

Why Join Our Team?

In addition to exciting career opportunities, we also have:

• Excellent personal and professional career growth

• 9/80 work schedule (every other Friday off), when applicable

• Onsite cafeteria (breakfast & lunch)

• Much, much more!

For more information on our partnership with NASA at Johnson Space Center (JSC), please visit www.wehavespaceforyou.com

• Proof of U.S. Citizenship or US Permanent Residency may be a requirement for this position.

• Must be able tocomplete a U.S. government background investigation.

• Management has the prerogative to select at any level for which the position is advertised.

Essential Functions

Work Environment

Generally, an office environment, but can involve inside or outside work depending on task.

Physical Requirements

Work may involve sitting or standing for extended periods (90% of time). May require lifting and carrying up to 25 lbs. (5% of time).

Equipment and Machines

Standard office equipment (PC, telephone, printer, etc.).

Attendance

Regular attendance in accordance with established work schedule is critical. Ability to work outside normal schedule and adjust schedule to meet peak periods and surge requirements.

Other Essential Functions

Professional behavior that enhances productivity and promotes teamwork and cooperation. Grooming and dress must be appropriate for the position and must not impose a safety risk/hazard to the employee or others.

#JETS #JETSII

Compensation Details:

EN2-EN4

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance

• Paid time off and holidays

• Retirement benefits (including 401(k) matching)

• Educational reimbursement

• Parental leave

• Employee stock purchase plan

• Tax-saving options

• Disability and life insurance

• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

08/31/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.