• Senior Linux Engineer

    CACI International (Chantilly, VA)
    Senior Linux Engineer Job...Time Type: Full time Minimum Clearance Required to Start: TS /SCI with Polygraph Employee Type: Regular Percentage of Travel ... is seeking a highly skilled and experienced Tier 3 Linux Engineer to join our team in...tools, and best practices. **Qualifications:** _Required:_ * An Active TS /SCI Clearance with Polygraph. * Security+ or DoD 8570… more
    CACI International (11/01/25)
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  • Linux Engineer

    Arena Technical Resources, LLC (Chantilly, VA)
    …VA, US Job ID: ATR 17717 Job Description Job Title: Linux Engineer Location: Chantilly, VA Eligibility: Top Secret /SCI clearance with current CI ... required The Systems Engineering team is seeking a driven Senior Linux /UNIX Systems Administrator that is highly...- Experience writing detailed, technical documentation -8570 Compliance -Active TS /SCI + CI Poly - Ability to respond to… more
    Arena Technical Resources, LLC (11/29/25)
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  • Senior . Platform Engineer

    RTX Corporation (Aurora, CO)
    …world. Raytheon Technologies (RTX) is seeking a talented ** Senior Platform Linux - (Front End Processor (FEP) Engineer )** with experience in traditional ... Technical Exchange Meetings (TEMs) to help develop the environment from requirements. The ** Senior Platform Linux (FEP) Engineer ** will support design,… more
    RTX Corporation (12/02/25)
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  • Senior . Platform Engineer

    RTX Corporation (Aurora, CO)
    …problems that create a safer, more secure world. Raytheon Technologies (RTX) is seeking a ** Senior Platform Engineer / Linux ** with well-rounded Linux ... citizens are eligible for a security clearance​ **Security Clearance:** TS /SCI with Polygraph At Raytheon, the foundation of everything...Customer for Technical Exchange Meetings (TEMs) as required. The ** Senior Platform Engineer / Linux **… more
    RTX Corporation (11/19/25)
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  • Principal Systems Engineer ( Linux )

    Themis Insight (Fort Meade, MD)
    …Civilian and Military expertise to every case. We are hiring a Principal Systems Engineer ( Linux ) to work in Fort Meade, MD. Position location is subject ... area of responsibility. Communicates with other program personnel, government overseers, and senior executives. The Level 3 System Engineer (SE) shall possess… more
    Themis Insight (12/19/25)
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  • Linux Systems Engineer

    SAIC (Arlington, VA)
    …deep web and dark web. Clearance/Citizenship Requirements: + US Citizenship with an active Top Secret Clearance with ability to obtain SCI (Active and/or PR ... **Description** Seeking a Senior Systems/Network Engineer , working with a...day one. + KEY - Advance knowledge of RedHat Linux and RedHat OpenShift. + KEY - Expertise in… more
    SAIC (12/06/25)
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  • Senior Lab Engineer - RHEL SME

    Leidos (Orlando, FL)
    …Solutions Division at Leidos currently has an opening for a RedHat Enterprise Linux Engineer . **Primary Responsibilities** + The Test team within the Digital ... + Configure Windows based authentication to work with RedHat Linux and other systems within the environment for utilizing...Secret clearance with the ability to obtain a TS /SCI clearance + Bachelor's degree and 8+ years of… more
    Leidos (01/01/26)
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  • Sr . Software Engineer ( Top

    Lockheed Martin (King Of Prussia, PA)
    …over 3 years of experience, or equivalent experience/combined education\. You currently hold a Top Secret clearance\. **The Work:** * As a Software Engineer ... Lockheed Martin Rotary and Missions Systems \(RMS\) as a Senior Software Engineer \! Lockheed Martin is a...**Basic Qualifications:** * Security Clearance required prior to start: Top Secret * Experience developing full stack… more
    Lockheed Martin (11/06/25)
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  • IT Systems Engineer , Sr

    Lockheed Martin (King Of Prussia, PA)
    …Citizenship is a requirement to work at this facility \(No dual citizenship\)\. \- Top Secret level security clearance required\. \- Ability to move, rack, stack ... security clearance, you must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should Know** **Expression of… more
    Lockheed Martin (11/07/25)
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  • Senior Network Engineer - Top

    Cambridge International Systems Inc (Charleston, SC)
    Senior Network Engineer - Top Secret Clearance | Charleston, SC Cambridge International Systems, Inc. Join a dynamic global team united by shared values: ... in defense and security. We are currently seeking a Senior Network Engineer to support operations in...is a full-time CONUS position requiring an active DoD Top Secret clearance. This position may be… more
    Cambridge International Systems Inc (12/18/25)
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  • Sr . Cyber Systems Engineer (Active…

    Northrop Grumman (Tampa, FL)
    …with 9 years of IT experience is required. + US Citizenship is required. + Active Top Secret / SCI security clearance is required to be considered. + Must ... tasks. **These positions can be filled at the Principal Engineer or the Sr . Principal Engineer...is required. + US Citizenship is required. + Active Top Secret / SCI security clearance is… more
    Northrop Grumman (01/01/26)
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  • Cyber Security Implementation Engineer

    CACI International (St. Louis, MO)
    …and cloud-based cybersecurity infrastructure and applications running on Windows and Linux operating systems + Engineer and implement cybersecurity solutions ... Cyber Security Implementation Engineer Job Category: Engineering Time Type: Full time...Time Type: Full time Minimum Clearance Required to Start: TS /SCI Employee Type: Regular Percentage of Travel Required: Up… more
    CACI International (11/14/25)
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  • SAP NS2 Sr . Intel DevOps Engineer

    SAP (Herndon, VA)
    …benefits, and a team that wants you to grow and succeed. **SAP NS2 Sr . Intel DevOps Engineer - TS /SCI poly-Onsite-Chantilly, VA** **NS2 COMPANY DESCRIPTION** ... infrastructure customers. Must be a US Citizen with active TS /SC with Poly; NS2 does not offer Visa sponsorships...have manager's approval to transfer. The NS2 Intel DevOps Engineer candidate will be responsible for leading the development… more
    SAP (12/04/25)
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  • Sr . Full Stack Infrastructure…

    Lockheed Martin (King Of Prussia, PA)
    …technology to help our customers achieve their missions\. The Work: As a Full Stack Engineer on the ECIW team, you will: \- Work in an agile scrum environment ... for all of the client/server/storage/network devices \- Patch, harden and upgrade Linux RedHat OS and related virtualization platforms while working with Security… more
    Lockheed Martin (11/05/25)
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  • Sr . Software Engineer TS

    Leidos (San Diego, CA)
    **Description** Leidos has an exciting opportunity for a Sr . Software Engineer ! *Must have an active TS /SCI Polygraph up front. No exceptions.* You will ... as both an individual and a member of our top -notch agile development team building a large complex enterprise...and shared actions for developers and testers. You will engineer , author, tune and document automation scripts in a… more
    Leidos (12/10/25)
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  • Sr . Splunk Engineer - TS

    Optiv (Herndon, VA)
    Optiv + ClearShark is looking for a highly skilled Sr . Splunk Engineer (Federal Managed and Advanced Services) to join our cybersecurity team. The ideal ... on sophisticated tasking. **What we're looking for** + Currently holds a TS /SCI with CI polygraph. + Security Certification (ie, Security+, CISSP, etc) required.… more
    Optiv (11/13/25)
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  • AI/ML Engineer with RE/VR proficiency and…

    Cipher Tech Solutions (Vienna, VA)
    …reverse engineering domains . Requirements: + Must be a US Citizen who currently holds a TS clearance or higher. + Must be willing to sit for a polygraph. + Must ... development for IDA Pro or Ghidra. + Proficiency in Android/ Linux and/or Windows OS internals. Benefits: + Mission focused...of analyzing malicious code. The goal of a reverse engineer is to understand how the malicious code works… more
    Cipher Tech Solutions (11/19/25)
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  • Senior Computer Network Defense (CND)…

    V2X (Springfield, VA)
    …and professionalism. We are hiring for a Senior Computer Network Defense (CND) Engineer with an active TS /SCI clearance - with the ability to obtain and ... location. Our positions are required to be onsite. The Senior Computer Network Defense (CND) Engineer tests,...Security Clearance Requirements: + The position requires an active Top Secret /SCI clearance with the ability to… more
    V2X (12/12/25)
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  • Senior Software Engineer ( TS

    Alaka'ina Foundation Family of Companies (Orlando, FL)
    Senior Software Engineer ( TS -SCI)...Citizenship required. + Able to obtain and maintain a TOP Secret Clearance/SCI. The Alaka`ina Foundation Family ... Family of Companies (FOCs) is looking for a motivated Senior Software Engineer ( TS /SCI) to...position requires active day-to-day software development + Experience in Linux shell scripting + Experience in cloud-based infrastructures and… more
    Alaka'ina Foundation Family of Companies (12/25/25)
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  • Principal Systems Engineer - active…

    V2X (Suitland, MD)
    …location. The position is required to be onsite. The position requires an active Top Secret /SCI clearance and the ability to obtain and maintain a ... responsibility, and professionalism. We are hiring a Principal Systems Engineer - active TS /SCI clearance to support...Counterintelligence (CI) Polygraph. The Senior -level Principal Systems Engineer shall lead a… more
    V2X (11/15/25)
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