Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges across the globe. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success.  We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. With offices across the United States engaging in the defense, space, cyber and commercial fields, Leidos provides responsive, cost-effective engineering, scientific and IT solutions. Leidos is well known for our people-oriented culture, positive work environment, technical excellence, and resilient business ethics. 

Leidos is seeking a talented aerospace modeling and simulation engineer within the Flight Systems Department.  As part of the Leidos Threat Analysis and Modeling branch, you will provide solutions to complex technical problems involving modeling, simulation, and analysis of missiles, space systems, hypersonics, and more. 

Primary Responsibilities

• Developing and maintaining simulations to evaluate performance and flight dynamics of an aerospace flight vehicle.
• Creating 6-DOF, 3-DOF, and/or hardware-in-the-loop (HWIL) simulations by incorporating aerodynamic & propulsion models, Guidance/Navigation/Control (GNC) algorithms, and other features to accurately characterize the capabilities of foreign or domestic missiles systems and other flight vehicles. 
• Providing accurate assessments to inform Department of Defense policy makers, acquisition program, warfighter consumers, or other organizations to support their needs.
• Developing, upgrading, or using scripts, GUIs, or other utilities to support analysis and programmatic efforts.

Basic Qualifications

• This position requires a fundamental understanding of aerospace engineering concepts, particularly including flight dynamics, simulation, orbital mechanics, and/or guidance/navigation/controls.  Candidate must also possess a solid foundation of programming experience in Matlab/Simulink, C/C++, Python, or other language.
• Candidate must possess strong technical communication skills and an ability to work both independently and in collaborative team environments.
• Candidates must be a resident of North Alabama area or willing to relocate to work on-site at the Huntsville, AL office.
• Candidates must have a bachelor’s degree with 2-3 years of relevant experience or a graduate degree in Aerospace, Mechanical Engineering, Physics, Computer Science, or related field from an ABET accredited school.

Security Clearance Qualifications

• Must be a U.S. Citizen with an active Secret Security Clearance and have the ability to obtain a Top Secret/SCI clearance with polygraph.

Preferred Qualifications

• Familiarity with DoD processes and methods.
• Strong math skills in the areas of linear algebra, matrix math, statistics, trigonometry, and coordinate transformation.
• Experience with:
  • Configuration management software, such as Git or Mercurial
  • Physics-based modeling and simulation
  • Simulink code-generation
  • GNC applications of flight vehicles, guided munitions, and/or UAS systems
  • C++ programming

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

December 10, 2025

Pay Range:

Pay Range $69,550.00 - $125,725.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.