• Software Engineer

    CACI International (Denver, CO)
    Software Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage ... Systems Engineers to understand requirements and provide feedback * Interface with Software and Integration Engineers to containerize, test, and deploy services *… more
    CACI International (10/16/25)
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  • Cleared Software Engineer Intern…

    CACI International (Denver, CO)
    Cleared Software Engineer Intern - Summer 2026 Job Category: Intern/Co-op Time Type: Part time Minimum Clearance Required to Start: TS/SCI with Polygraph ... None Anticipated Posting End: 1/31/2026 **The Opportunity:** CACI is seeking a skilled Software Developer for our Summer 2026 Makalu internship program. If you are… more
    CACI International (10/08/25)
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  • Staff / Sr Staff Python Software…

    SciTec (Boulder, CO)
    …type. Further, US citizenship is a requirement to obtain and keep a security clearance . Applicants that do not meet these requirements will not be considered. SciTec ... has an immediate opportunity for a talented Python Software Developer in Boulder, CO, to support programs focusing...The ability to obtain and maintain a DoD security clearance + Detail oriented + Good verbal and written… more
    SciTec (11/27/25)
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  • IT Software Engineer - .Net/Web

    Nelnet (Centennial, CO)
    …they live, learn, and work. Responsible for developing enterprise wide cross-functional software solutions, working closely with IT Software Architects and IT ... work experience. **EXPERIENCE:** Minimum 3 years of experience in software development with strong skills in at least one...Agile strongly desired. + Ability to obtain a security clearance . + Knowledge in the area of NIST compliance… more
    Nelnet (11/18/25)
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  • Software Engineer

    Actalent (Colorado Springs, CO)
    Job Title: DARC Software Engineer Job Description Design, implement, and maintain mission applications and services using C++, Python, and MATLAB, aligned with ... concepts to integrate, test, and validate features. Collaborate across systems, software , test, and operations teams to deliver reliable and secure capabilities… more
    Actalent (01/03/26)
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  • Numerical Algorithm Software…

    SciTec (Boulder, CO)
    …type. Further, US citizenship is a requirement to obtain and keep a security clearance . Applicants that do not meet these requirements will not be considered. SciTec ... has immediate opportunities for talented software & algorithm developers and engineers to support programs...will be preferred + A current active DoD security clearance + An advanced degree in the physical sciences,… more
    SciTec (11/26/25)
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  • Remote Principal Software Engineer…

    Oracle (Denver, CO)
    …low-latency cloud-based data systems. You'll lead technical efforts, collaborate with software teams, design solutions, write code, and deliver high-quality ... software products to customers. Responsibilities **Responsibilities:** + Design and...field. + US Citizenship and willingness to obtain security clearance after starting is required. + 8+ years of… more
    Oracle (11/25/25)
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  • Cyber Software Engineer

    Lockheed Martin (Denver, CO)
    …Linux, Unix, Mac, Windows, Android, iOS\. * Hands\-on experience developing software using Configuration Management Tools \(e\.g\., Git, SVN, TFS\)\. * Experience ... tools and techniques * IP networking \#LMSpaceCyberEng \#LMSpaceSoftwareEng **Security Clearance Statement:** This position requires a government security … more
    Lockheed Martin (12/14/25)
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  • Software Engineer Intern - Summer

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …end of internship + The ability to obtain and maintain a Secret US Security Clearance is required + Strong skills in Word, Excel, PowerPoint and Visio + Ability to ... ability to obtain and maintain a Secret US Security Clearance . US Citizenship status is required as this position...required as this position needs an active US Security Clearance for employment. Non-U.S. citizens may not be eligible… more
    Sierra Nevada Company, LLC (12/11/25)
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  • Software Development Engineer

    Kratos Defense & Security Solutions, Inc. (Colorado Springs, CO)
    …Required Experience: + BS or MS Degree in CS, CE, or EE with software design, engineering and development skills, including familiarity with modern software ... development practices and tools + Requires 5-7 years of software development experience + Proficiency developing with C/C++ and/or Java + Proficiency with git + Team… more
    Kratos Defense & Security Solutions, Inc. (10/24/25)
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