• Frontline Service Center Account Manager

    CACI International (Denver, CO)
    …3 years of experience in Help Desk support, IT service desk, or systems administration roles. Proven ability to work shift-based schedules, including nights, ... handling inbound incidents, service requests, and technical issues across a range of systems , applications, and platforms (including Windows and Linux ). You will… more
    CACI International (09/18/25)
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  • Cybersecurity Analyst

    Tyto Athene (Colorado Springs, CO)
    …of Unix/ Linux as well as scripting and programming. **Clearance:** + Active Top Secret with SCI access is required. **About Tyto Athene** **Compensation:** + ... GSM-O II Network Assurance in providing for the integrity and security of cyber systems and networks for the Defense Information Systems Agency's (DISA) global… more
    Tyto Athene (09/15/25)
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  • Lead System Security Engineer

    Parsons Corporation (Boulder, CO)
    …+ Familiarity with MBSE/SysML system engineering **Security Clearance Requirement:** An active Top Secret SCI security clearance is required for this position.​ ... certifications such as CompTIA CASP+, CISSP, OSCP, CISM, CEH, GSEC + System administration experience with Linux + Network switch and router administration… more
    Parsons Corporation (09/23/25)
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  • Principal System Administrator

    RTX Corporation (Aurora, CO)
    …as only US citizens are eligible for a security clearance​ **Security Clearance:** TS /SCI with CI Poly - Current At Raytheon, the foundation of everything we ... Raytheon has an opportunity for a **Principal System Administrator** for Linux operational support and sustainment for high priority operational environment which… more
    RTX Corporation (09/03/25)
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  • Senior Software Infrastructure Engineer (Onsite)

    RTX Corporation (Aurora, CO)
    …as only US citizens are eligible for a security clearance​ **Security Clearance:** TS /SCI with Poly - Current At Raytheon, the foundation of everything we do ... Engineer** with **expertise in DevOps** tools to join our Satellite Ground Systems team. This role involves designing, implementing, and maintaining the software… more
    RTX Corporation (08/30/25)
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  • System Administrator

    DCCA (Denver, CO)
    …possess 8570 IAT-II certifications (or higher) - baseline (ex. Security+) and CE (ex. Linux +) + Linux Administration (RHEL 7/8) Desired Skills: + DevSecOps ... at: www.dcca.com System Administrator Candidates MUST have an active TS /SCI Clearance For over 40 years, DCCA has provided... + Radix/eMASS (or similar scanning tools) + GitLab Administration + ServiceNow Application/ Systems Administration … more
    DCCA (09/22/25)
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  • Software Test Engineer Staff

    Lockheed Martin (Littleton, CO)
    …with peers and occasional customer interactions\. Experience with C/C\+\+, Python, Linux OS, and Object\-Oriented design is preferred\. Strong ability to perform ... test planning, perform functional software testing, automated software testing, system administration , or technical analysis\. * Analyze requirements and work with… more
    Lockheed Martin (08/02/25)
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  • DevSecOps / Cloud Engineer

    DCCA (Broomfield, CO)
    …Bamboo) and/or repositories (ie Nexus, JFROG) * Experience with Windows and Linux /Unix administration * Prior experience with DevOps and/or Software Factory ... DevSecOps / Cloud Engineer Candidates MUST have an active TS /SCI Clearance For over 40 years, DCCA has provided...end customer. * Maintains smooth operation of multi-user computer systems , including coordination with systems and network… more
    DCCA (08/29/25)
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  • Staff Network Engineer

    Northrop Grumman (Aurora, CO)
    …Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations ... of history, they're making history. The Payload and Ground Systems , a division within Northrop Grumman's Space Systems...considered in lieu of a degree requirement. + **Active TS /SCI with an adjudicated full-scope polygraph at time of… more
    Northrop Grumman (09/16/25)
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  • Senior Network and Next Generation Firewall…

    Lumen (Denver, CO)
    …experience is desired. Event analysis via SIEM or vendor application is desired. + Linux RedHat Server Administration is considered a plus. + Recognized industry ... committed to teamwork, trust and transparency. People power progress. We're looking for top -tier talent and offer the flexibility you need to thrive and deliver… more
    Lumen (10/01/25)
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