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Senior Software Engineer, Simulation​/Integration Security Clearance

Job in Littleton, Arapahoe County, Colorado, 80120, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-02-11
Job specializations:
  • Software Development
    Software Engineer
Salary/Wage Range or Industry Benchmark: 93200 - 164450 USD Yearly USD 93200.00 164450.00 YEAR
Job Description & How to Apply Below
Position: Senior Software Engineer, Simulation/Integration with Security Clearance
Job Number 717540

Description:

Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve.

We're creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We're erasing boundaries and forming partnerships across industries and around the world. We're advancing spacecraft and the workforce to fuel the next generation. And we're reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you!

We are seeking for a Senior Software Engineer to join our FSW/Sim Integration team that develops Sim Software and provides support to the integration team in integration and test of flight software and Sim products in Hardware in the loop. Core Responsibilities

• Maintain and develop simulation software

• Drive enhancements to end to end test scripts
• Work closely with Navigation, Guidance & Control, Flight Software development, and HWIL teams to ensure compliance with integration standards and test procedures.

• Understand and operate the Hardware In the Loop Testbed, including configurations, tools, and processes.

• Collaborate with engineering groups to resolve technical problems, communicate status, and maintain documentation.

• Uphold rigorous standards and processes through strong organizational and communication skills. Key Success Factors

• Ability to work independently with minimal supervision.

• Diagnose and resolve software configuration or baseline issues during integration and installation phases.

• Review problem reports and enhancement requests to assess impacts on testing and regression plans.

Basic Qualifications:

• Experience in Linux or UNIX environments.

• Experience on a software development program

• Experience with integrating and testing hardware/software products or equivalent technical experience

• Python development experience

• C++ development experience

• Good verbal, written, and interpersonal communication skills.
Desired

Skills:

• Experience with Matlab development
• Ability to read and modify Matlab tool

• Experience with Agile development methodologies

• Experience developing and maintaining simulation software

• Ability to analyze test results and coordinate with SME to verify functionality and requirements
Security Clearance Statement:
This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: Secret
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 to our Paid Time off benefits.
Schedule for this Position: 9x80 every other Friday off
Pay Rate:
The annual base salary range for this position in California, Massachusetts, and New York (excluding most major metropolitan areas), Colorado, Hawaii, Illinois, Maryland, Minnesota, New Jersey, Vermont, Washington or Washington DC is $93,200 - $164,450. For states not referenced above, the salary range for this position will reflect the candidate's final work location. Please note that the salary information is a…
Position Requirements
10+ Years work experience
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