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Senior Software Engineer; Level III - Top Secret clearance

Job in Littleton, Arapahoe County, Colorado, 80161, USA
Listing for: Lockheed Martin Corporation
Full Time position
Listed on 2026-06-27
Job specializations:
  • Software Development
    Software Engineer, C++ Developer, Unix/Linux
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 (Level III) - Top Secret clearance

Position Details

  • Location:

    Littleton, CO
  • Work Schedule:

    9x80
  • Position type:
    Full-time onsite (this is not a hybrid position)
Job Overview

Lockheed Martin Space is seeking a Senior Software Engineer to join our team in Littleton, CO. You will contribute to our mission supporting challenging programs related to Space Vehicles, Hypersonics, Human Space Flight and Interplanetary Missions, Missile Defense, and more, within the RF Talent Center (RFTC) team.

Responsibilities
  • Support the Global Security portfolio of programs by supporting payload analysis tool development on world class RF Payloads across various stages in each program's lifecycle.
  • Engage in system requirements flow-down to test and verify mission performance.
  • Lead troubleshooting anomaly resolution.
  • Work closely with other RF Engineers, Box and Sub-systems CPEs, leaders, and Subject Matter Experts to ensure a given program within Global Securities is successful.
  • Partner with customers and program leadership to ensure the success of payload products and milestones.
  • Demonstrate subject matter expertise on payload analysis tools and mission execution.
What You Will Gain
  • Deep expertise in payload data processing and the mission
  • Expand your engineering and software proficiency through challenging, real-world projects
  • Collaborative experience working side-by-side with a high-performing team of engineers
  • High-impact engagement with the customer on technical discussions and interchanges
  • Accelerate your skills to take on engineering growth opportunities
  • Hands‑on involvement in a cutting‑edge mission area that delivers tangible, real‑world results
  • Contribute to our armed forces' ability to execute their duties safely and bring our service members home
Basic Qualifications
  • Experience developing software using the Python, C#, and/or C++ programming languages.
  • Working knowledge of Agile methodologies.
  • Experience with Linux and Windows.
Security Clearance / Work Authorization

To meet requirements of the program/customer, this position requires the selected employee to ====. Prior to starting employment, selected candidates will be required to possess Top Secret clearance. For this position, applicants must possess a currently Active Top Secret security clearance to be considered. Selected candidates will be required to obtain, and maintain, Top Secret with adjudicated SCI Eligibility (i.e. TS/SCI) for long term employment on this program.

Desired

Skills
  • Bachelor's or Master's degree from an accredited college/university in Computer Science, Computer Engineering, Computer Information Systems, Electrical Engineering, Mathematics or related discipline.
  • Experience working independently with limited direction to complete assigned tasks.
  • Experience collaborating effectively with a team of users and other software developers.
  • Strong computer network troubleshooting skills.
  • Experience with software tools to perform version control (git, svn), peer reviews (code collaborator), code comparison (beyond compare), and bug/issue reporting (Jira).
  • Experience with object‑oriented software design and design patterns.
  • Experience with software IDEs such as Visual Studio, Eclipse, etc.
  • Knowledge of RF characterization parameters.
  • Experience in writing software or firmware for devices like microcontrollers, FPGAs, etc.
EEO Statement

Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.

Benefits
  • Medical, Dental, Vision, Life Insurance, Short‑Term Disability, Long‑Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Education Assistance, Parental Leave, Paid time off, and Holidays.
National Pay Statement
  • 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 general guideline only.

    Lockheed Martin considers factors such as (but not limited to)…
Position Requirements
10+ Years work experience
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