Controls, Modeling, Simulation, and Analysis Engineer (GN&C Senior Engineer) (ES5)

Join Our Journey At Amentum Space Exploration Division (ASED your growth is our priority! That’s why we offer an array of exciting opportunities for your career development. From the transformative Team Lead Academy to education reimbursement, personalized mentoring, and engaging company-sponsored networking events, you have the power to shape your professional journey in a way that aligns with your aspirations. Find Your Community At the heart of our thriving business are the incredible people who make it all possible. We celebrate a vibrant array of cultures, backgrounds, and experiences. Here, we foster an environment where everyone—employees, clients, and partners alike—are treated with the dignity and respect they deserve. Prioritize Your Well-Being Our extensive benefits package is designed with your health in mind. Enjoy wellness programs, paid holidays, generous time off, employee perks, and so much more. We’re here to help you achieve a harmonious balance in your life—both at work and at home. Together, We Soar Our dynamic team consists of 10 companies united in a single mission: to venture from Moon to Mars and beyond. Join us on this extraordinary adventure! Position Description 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 Golden Dome work in the Control Systems Design and Analysis branch at NASA’s Marshall Space Flight Center as a Senior Controls, Modeling, Simulation, and Analysis Engineer. This exciting work will assist external partners with the Design, Development, Testing, and Engineering (DDT&E) of the “Golden Dome for America” assets including satellite constellations, space-based interceptors, and directed energy platforms. Responsibilities include but are not limited to: • Review and analyze the mission design and/or the Attitude Determination and Control System (ADCS) design of Golden Dome providers, perform independent verification and/or validation of contractor results where necessary, and identify risks in the providers’ proposed concepts and designs. • Review and co-develop Concepts of Operations (ConOps) for in-space technology demonstration satellite bus contractors and proposed missions, including operational modes, mission phases, state transitions, nominal and contingency operations, and command and control architecture. • Review, analyze, and simulate (in Systems Tool Kit (STK) or equivalent) in-space deployer platform trajectories, including orbital mechanics validation, orbital variation analysis of deployed assets, and evaluation of deployment sequencing and phasing strategies. • Review, analyze, and independently simulate in-space deployer pointing stability performance and detumble requirements for deployed assets, including analysis of angular rates, momentum management, disturbance torques, separation dynamics, and time-to-stabilization for deployed payloads. • Review, analyze, and independently simulate pointing accuracy and stability of multiple assets within the Golden Dome architecture, including jitter analysis, slew rate performance, target tracking capabilities, line-of-sight stability, attitude knowledge and control error budgets, and inter-satellite relative attitude coordination. • Review and assist with technology maturation efforts through the Technology Readiness Level (TRL) scale for ultimate incorporation into Golden Dome assets, including assessment of development progress, identification of technical gaps, evaluation of test and validation approaches, and recommendations for advancement criteria. • Attend offsite Technical Interchange Meetings (TIMs) with providers and subcontractors to review technical progress, assess design maturity, provide independent technical evaluation, and identify integration risks and mitigation strategies. • Attend regular status meetings with NASA management and critical stakeholders to provide technical briefings, communicate risk assessments, report on provider performance, and coordinate inter-agency technical activities. 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 9 years of experience, a master’s with at least 13 years of experience, or BS with at least 15 years of experience. Must be a US Citizen and have a state STAR/REAL ID/Driver’s License that is Federal Government compliant. Required skills/experience: • Proficiency modeling, simulating, and analyzing the performance of satellites, spacecraft, launch vehicles, and/or missiles in the time domain using parametric, Monte Carlo, and statistical techniques. • Demonstrated ability to design ADCS systems (PID, state space, etc.) and analyze ADCS performance including jitter analysis and stability analysis in the time and frequency domain (Nicols, Bode, Nyquist, Root Locus, etc.) • Capability to model spacecraft components/subsystems such as: mass properties, Thrust Vector Control (TVC) actuators, Reaction Control System (RCS) thrusters, reaction wheels, slosh, pogo, rigid and/or flexible body dynamics. • Understanding of and simulation of orbital mechanics and trajectories for spacecraft and launch vehicles in Systems Tool Kit (STK) or equivalent tools. • Programming in MATLAB, Simulink, and C/C++. This includes debugging and improving the efficiency of simulation tools. • Experience in performing software development, verification, and validation. • 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. • Must be a US Citizen and have a STAR ID. Desired skills/experience: • Ability to work problems from first principles, including derivation of dynamics equations of motion, including both nonlinear equations and linear state equations and integrate subsystem models into larger simulations. • Experience performing trade studies, sensitivity, and/or Monte Carlo simulation and analyses related to the control of launch vehicles and/or spacecraft. • Programming in other languages such as Python, Simscape Multi-body. • Familiarity with and the ability to apply the NASA Technology Readiness Level (TRL) scale. • Experience with creating animations/visualization from results of 3-DoF/6-DoF simulations using tools such as Unreal Engine, Systems Tool Kit (STK), etc. 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 #Amentum Compensation Details: ES5 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: 06/29/2026 - 07/31/2026 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. Welcome back! We encourage you to check on the status of your current job applications with us. You can also search for a list of our current job openings and see if there are any new positions that might be a good fit for you. 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