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Software Engineer - Modeling & Simulation Security Clearance

Job in Littleton, Arapahoe County, Colorado, 80120, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-01-06
Job specializations:
  • Software Development
    Software Engineer
Job Description & How to Apply Below
Position: Software Engineer - Modeling & Simulation with Security Clearance
Job Number 713417

Description:

The Lockheed Martin Space Mission Integration team seeks a highly skilled, motivated, and team-oriented software engineer to join our Strategic Operations Analysis team in Littleton, CO. This teams provides physics-based modeling, simulation, and analysis to identify and validate the viability of future space capabilities. As a software engineer with Mission Integration, you will contribute to the team's efforts to design, develop, test, and deploy high fidelity multi-domain models to inform executive leadership, space strategy, and business development.

This is a unique opportunity to contribute to innovative, forward-leaning programs while working alongside some of the brightest minds in the industry.

Responsibilities include:

• Planning and conducting software development activities

• Designing, developing, documenting, testing, and debugging software for a system performing complex calculations including orbital projection and multi-domain effects

• Applying the appropriate standards, processes, procedures, and tools throughout the development life cycle. This will include working within an Agile workflow and supporting major program milestone events
• Correcting program errors, preparing operating instructions, compiling documentation of program development, and analyzing system capabilities, output requirements, input data acquisition, programming techniques and controls

• Ensures software standards are met in conjunction with team leadership

• Assist with modeling, analysis, and visualization of analysis as needed

Basic Qualifications:

• Bachelor's or master's degree (or higher) in Computer Science, Computer Engineering, Aerospace Engineering, Physics, Mathematics, Electrical Engineering, or similar technical discipline.
• 3+ years of related experience working on software development projects

• Ability to interact with peer-developers to facilitate interoperability with other modeling environments

• Experience working closely with mission analysts to generate lacking analysis capabilities

• Understanding of and comfort developing software in C++

• Experience using scripting languages such as Python or MATLAB

• Experience with AFSIM as well as the development and integration of AFSIM plug-ins

• Experience with other modeling environments

• GITLAB management experience to include creating / managing CI/CD pipelines

• Experience supporting modeling & simulation of campaign-level scenarios

• Active TS clearance with ability and willingness to obtain and maintain a TS//SCI clearance. Investigation within the last 5 years
Desired

Skills:

• Experience with writing software for computationally complex problems

• Demonstrated understanding of software design with a focus on high throughput calculations

• Enthusiastic, curious, and team focused

• Experience developing software interfaces including integration with third-party API's

• Expertise in both the Space & Aero mission areas with an ability to demonstrate operational and tactical insights to support multi-domain efforts

• Active presence across the AFSIM development community

• Experience conducting joint-domain analysis and product delivery.
• Active TS/SCI clearance
Security Clearance Statement:
This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: TS/SCI
Other Important Information You Should Know
Expression of Interest:
By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.
Ability to Work Remotely: Onsite Full-time:
The work associated with this position will be performed onsite at a designated Lockheed Martin facility.
Work Schedules:
Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition…
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