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Position Description for Controls, Modeling, Simulation, and Analysis Subject Matter Expert (GN&C SME)

The Amentum Space Exploration Division (ASED) Guidance, Navigation, and Control (GN&C) team is a high performing group executing challenging tasks to design and integrate GN&C systems for projects ranging from CubeSats to NASA's Space Launch System (SLS).

We are searching for highly qualified candidates to support the design, development, and oversight of the Human Lander Systems Program in the Control Systems Design and Analysis branch at NASA's Marshall Space Flight Center as a Controls, Modeling, Simulation, and Analysis Subject Matter Expert. This exciting work will serve as a critical step in sending humans back to the Moon, Mars and beyond!

Responsibilities include but are not limited to:

• Model, develop, simulate, and analyze launch vehicle, spacecraft, and lander dynamics and control system performance and stability.

• Resolve complex problems pertaining to the design, development, analysis, integration, evaluation, testing, and verification of control systems and 6-DoF models and simulations.

• Develop, modify, maintain, and improve software simulations, tools, and scripts.

• Periodically analyze HLS partner' flight data and present findings to NASA management.

• Create, edit, and debug software written in MATLAB, Simulink, and Simscape.

• Configure, conduct, and analyze 6-DoF Monte Carlo simulations.

• Automate Monte Carlo, controls design algorithms, and/or regression processes

• Conduct trades studies and/or sensitivity analyses related to launch vehicles and spacecraft control.

• Mentor junior engineers in conducting control system modeling, simulation, and analysis.

• Prepare and present technical reports and/or briefings including visualization of results.

• Create and review engineering and software documentation.

Qualifications

A degree in Aerospace, Mechanical or Electrical Engineering or related field from an ABET accredited institution is required. Typical experience requirements are the equivalent of a PhD with at least 19 years of experience, a master's with at least 23 years of experience, or BS with at least 25 years of experience. Must be a US citizen.

Required skills/experience:

• Proficiency modeling, simulating, and analyzing the performance of launch vehicles, spacecraft, and landers in the time domain using parametric, Monte Carlo, and statistical techniques.

• Ability to work problems from first principles and integrate subsystem models including Guidance, Navigation, and Control algorithms into larger simulations.

• Modeling of spacecraft components/subsystems such as: Thrust Vector Control (TVC) actuators, Reaction Control System (RCS) thrusters, slosh, pogo, rigid and/or flexible body dynamics.

• Experience with modeling, simulation, and analysis of spacecraft rendezvous, proximity operations, and docking and/or landers.

• Programming in MATLAB, Simulink, Python, and C/C++. This includes debugging and improving the efficiency of simulation tools as well as automating simulation processes.

• Experience performing software development, verification, and validation.

• Experience performing trade studies, sensitivity, and/or Monte Carlo simulation and analyses related to the control of launch vehicles and/or spacecraft.

• Familiarity with and an understanding of trajectory and orbital dynamics.

• Must be detail oriented and self-motivated that can work independently taking projects from start to finish without much oversight.

• Must also be able to work collaboratively with other team members both locally and remote at other facilities or vendors.

• Strong written and oral communication, interpersonal, and problem-solving skills.

• Experience leading and/or mentoring junior engineers.

Desired skills/experience:

• Experience analyzing control stability in the frequency domain (Nichols, Bode, Nyquist, Root Locus, etc.).

• Demonstrated ability to design flight control systems (PID, state space, etc.) and perform actuator allocation (manual jet selection, quadratic programming, pseudo inverse, etc.)

• Programming in other languages such as Simscape Multi-body.

• Experience with creating animations/visualization from results of 3-DoF/6-DoF simulations using tools such as Unreal Engine, Satellite Tool Kit (STK), etc.

• Model based design experience.

Essential Functions

Work Environment:

Office environment. Requires ability to provide clear, concise, accurate and timely communication, both verbally and in writing (100%). Requires ability to interact professionally with co-workers, management, and client (100%). Requires travel in the domestic USA (5%). Requires ability to work at a computer for long periods of time (100%).

Physical Requirements:

Requires sitting for extended periods of time in meetings with peers, management, and with our client at NASA facilities to discuss technical issues (10%). Also, requires sitting for extended periods of time at a desk to write reports and perform engineering tasks (80%). Requires ability to use stairs or elevators for access between floors and multiple buildings at NASA and our facilities (10%).

Equipment and Machines:

Requires ability to operate a personal computer, a telephone, fax machine, copier, calculator, and other general office equipment (100%).

Attendance:

Normal workday 7:30-4:30, Monday thru Friday. Minimal overtime may be required (10%) to meet schedule milestones and to support technical demands of the job. Regular attendance is a necessity, and adequate arrangements for delegating duties during absences are required.

Other Essential Functions:

The ability to work independently with minimal supervision, and to make rational decisions, and to exercise good judgment is essential (100%). Grooming and dress must be appropriate for the position and must not impose a safety risk/hazard to the employee or others.

Proof of U.S. Citizenship is required.

#ESSCA #ASED

Compensation Details:

SME1-3

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:

04/02/2026 - 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 atLabor Laws Posters.