• Principal Software Engineer

    Leidos (Bethesda, MD)
    **Description** **Leidos** has a new and exciting opportunity for a **Principal** ** Software Engineer ** in our **National Security Sector's (NSS) Cyber & ... more. **Join us and make a difference in National Security !** **Job Description** A Software Engineer...be considered must have an active TS/SCI with polygraph security clearance **Preferred Qualifications** + Experience with… more
    Leidos (11/07/25)
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  • Expert CNO Software Engineer

    ManTech (Hanover, MD)
    **MANTECH** seeks a highly experienced and mission-focused **Expert Software Engineer ** to join our CNO team in **Hanover, MD.** As an Expert Software ... software and systems + Apply expert knowledge of security concepts and network technologies + Communicate project status... Requirements:** + Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able… more
    ManTech (01/13/26)
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  • Senior CNO Software Engineer

    ManTech (Hanover, MD)
    **MANTECH** seeks a highly experienced and mission-focused **Senior CNO Software Engineer ** to join our CNO team in **Hanover, MD.** As a Senior Software ... the design, development, documentation, testing, and debugging of applications software and systems + Apply knowledge of security... Requirements:** + Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able… more
    ManTech (01/13/26)
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  • Software Cyber Engineer - SWE 0

    Lockheed Martin (Hanover, MD)
    …support our employees, so they can support our mission\. **The Work:** As an Entry‑Level Software Engineer on the Offensive Cyber team, you will: * Design & ... \#RMSCYTJ \#RMSC6ISR \#RMSTG2025 **Basic Qualifications:** * Candidate must possess active US security clearance with a polygraph * Bachelor's degree in computer… more
    Lockheed Martin (11/26/25)
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  • Software Engineer with Data…

    CACI International (Laurel, MD)
    Software Engineer with Data Management Experience Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph ... * * * **The Opportunity:** CACI is seeking a Software Engineer with Data Management Experience to...security evaluation processes **Qualifications:** _Required:_ + Active TS/SCI clearance with Polygraph + 10+ years of experience as… more
    CACI International (12/30/25)
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  • Software Engineer , Lead - TS/SCI…

    Parsons Corporation (Annapolis Junction, MD)
    …what's possible. **Job Description:** Parsons is seeking an experienced and dynamic **Lead** ** Software Engineer ** to manage a diverse team of software ... + AWS certifications and NC3 mission experience are advantageous but not required ** Security Clearance Requirement:** An active Top Secret SCI w/Polygraph … more
    Parsons Corporation (11/24/25)
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  • Software Engineer III

    Gama-1 Technologies (Silver Spring, MD)
    Summary GAMA-1 Technologies, LLC seeks an experienced Software Engineer III to support our growing Cloud Services practice in remote work environment. This ... for documentation + Contributions to open-source projects or technical publications. Work authorization/ security clearance requirements + Ability to obtain a … more
    Gama-1 Technologies (11/05/25)
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  • JBlocks Java Software Engineer

    CACI International (Hanover, MD)
    JBlocks Java Software Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee ... * **The Opportunity:** The JBlocks team is seeking a Software Engineer to work with a team...candidate will be expected to provide input throughout the software lifecycle. **Qualifications:** _Required:_ + TS/SCI Clearance more
    CACI International (01/09/26)
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  • Cyber Software Engineer Sr Stf - C++

    Lockheed Martin (Fort Meade, MD)
    …This position may be eligible for a $25K sign on bonus for external hires\! Cyber Software Engineer Sr\. Stf \- C\+\+ WHAT WE'RE DOING Lockheed Martin, Cyber & ... The successful candidate will analyze user requirements, develop new software , and enhance existing systems to meet the demands...labor category level 3\. \*\*\*You must possess the requisite security clearance and polygraphs to apply to… more
    Lockheed Martin (01/08/26)
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  • Software Engineer 1

    Amentum (Annapolis Junction, MD)
    …impact on the Nation's security and intelligence mission. **Responsibilities:** The Software Engineer develops, maintains, and enhances complex and diverse ... in using your skills to help shape the Cyber, Security , & Intel space? If so, look no further....If so, look no further. Amentum is seeking a ** Software Engineer ** to join our team of… more
    Amentum (01/16/26)
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