Amentum

Sr Flight Mechanics Engineer for Space Launch System (SME)

Amentum$100K — $130K *
Aerospace & Defense
15+ years of experience
Job Overview by Ladders

Qualifications

  • Ph.D. in Aerospace Engineering, Mechanical Engineering, Physics, or related field with 24+ years experience, or MS with 28+ years, or BS with 30+ years.
  • US Citizenship and a STAR ID required.
  • Strong background in flight dynamics modelling and analysis.
  • Proficient in programming languages: C, C++, Python, and BASH.
  • Experience with computational simulations and 6 DOF trajectory analysis.

Responsibilities

  • Analyze spacecraft ascent dynamics and performance trajectories.
  • Model ascent and in-space environments, including errors and GN&C algorithms.
  • Simulate various flight scenarios, including contingencies and failures during ascent.
  • Develop trajectory analysis algorithms using Monte Carlo methods.
  • Edit and debug software/scripts in C, Python, and other languages.
  • Enhance NASA's MAVERIC simulation capabilities.

Benefits

  • Health, dental, and vision insurance.
  • Paid time off and holidays.
  • Retirement benefits with 401(k) matching.
  • Educational reimbursement.
  • Parental leave.
  • Employee stock purchase plan.
  • Disability and life insurance.
Full Job Description

The Senior Flight Mechanics Engineer helps support the development, integration, and testing of 6 DOF trajectory simulation software for NASA’s SLS/ARTEMIS program.  This position will require a well-rounded background of flight dynamics modelling skills, experience with computer programming, and the desire to perform high fidelity analyses to help optimize and integrate inputs for the flight dynamics of the Artemis mission.

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 NASA projects ranging from NASA’s Space Launch System (SLS) to NASA’s Human Lander System. We are searching for highly qualified candidates to support NASA’s Flight Dynamics Team in the Guidance, Navigation, & Mission Analysis branch at NASA’s Marshall Space Flight Center. This exciting work will serve as a critical step in sending humans back to the Moon, Mars and beyond!

ASED offers a partnership in which you can grow personally and professionally within a framework of strong leadership, competitive compensation, and rewarding career paths. Come join our team!

Job Functions:

  • Analysis of launch vehicle and spacecraft, dynamics, equations of motion, and trajectories to assess performance of spacecraft ascent trajectories, mission analysis, and related studies
  • Modeling ascent and in-space environments, errors, disturbances, GN&C algorithms, sensors, actuators, and mechanisms
  • Simulate and analyze nominal, contingency, and failure scenarios during ascent and in-space flight
  • Develop algorithms and tools to analyze 6 DOF trajectories using Monte Carlo techniques
  • Execute/modify existing software/scripts in C, Python, C++
  • Help develop and improve NASA’s MAVERIC simulation

Qualifications

A degree in Aerospace Engineering, Mechanical Engineering, Physics or related field from an ABET accredited institution is required. Typical experience requirements are the equivalent of:

• Ph.D., with minimum of 24 years of experience,
• MS with at least 28 years of experience, or
• BS with at least 30 years of experience

Must be a US Citizen and have a STAR ID

To be successful in this position, the applicant must be detail oriented, work independently and collaboratively, possess strong communication and interpersonal skills, and will typically possess some of the following skills:

  • Dynamically model 6 DOF single body systems
  • Matlab, Fortran, C++ programming experience
  • Familiarity with Linux, Bash, and the use of computational clusters/servers
  • Support the design, integration, and analysis of GN&C products.
  • Configure, conduct, and analyze 6-DOF Monte Carlo simulations.

The candidate is REQUIRED to have the following skills and experiences:

  • C or C++ programming experience, preferably both
  • Python programming experience
  • BASH experience
  • Significant Software & simulation integration OR significant Modeling & simulation experience

Duties

Day to day activities include:

  • Dynamic modeling of 6 DOF single body systems
  • Creating, editing and debugging software written in C, Python, Matlab, Fortran, and C++.
  • Optimization and improvement of analysis tools and GN&C models.
  • Working with GN&C leads and other engineering disciplines.
  • Supporting the verification and validation of technical products.
  • Creation and review of engineering and software documentation.
  • Preparing and Presenting technical reports and briefings.


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

* Proof of U.S. Citizenship is required.

Compensation Details:

SME

       

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:

07/01/2026 - 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.

       

About Amentum

Amentum is a leading provider of engineering and technical services to the U.S. government and commercial customers worldwide. The company offers a wide range of services, including environmental remediation, facilities management, and logistics and supply chain management, among others. Amentum has a global presence, with operations in over 20 countries, and serves a diverse range of customers, including the Department of Defense, the Department of Energy, and the Department of State. The company is committed to providing high-quality services and has a strong reputation for technical expertise, innovation, and customer satisfaction.
Learn more about Amentum
Size
20,000 employees
Industry
Net Income
$200 million
Founded
2014
Revenue
$5 billion

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