• Senior IT Systems Administrator 1

    Applied Research Associates, Inc. (Warrendale, PA)
    …position is in person/hybrid in our Pittsburgh, PA office. We're looking for a ** Senior IT Systems Administrator ** to join our team. This successful person will ... devices (routers, switches, firewalls) to ensure optimal performance and security . You'll manage VPNs, access controls, and network...at least five (5) years of experience in a senior Linux Systems Administrator role, preferably in… more
    Applied Research Associates, Inc. (10/24/25)
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  • Senior Systems Administrator

    COCC (Bend, OR)
    Senior Systems Administrator Below you will find details for the position including any supplementary documentation and questions you should review before ... | Apply for this Job Position Details Position Information Position Title Senior Systems Administrator Classification Title Administrator Position Number… more
    COCC (11/24/25)
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  • Sr Information Technology Project Manager

    BAE Systems (Washington, DC)
    …project team. Maintains operation of multi-user computer systems, including coordination with network engineers. Duties may include setting up administrator and ... 8140.03 (former DoD 8570.01-M) Intermediate (Basic, Intermediate, Advanced) qualification (eg Security CA) within 6 months of starting position + Secret Clearance… more
    BAE Systems (10/14/25)
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  • Senior Systems Administrator

    EPS Corporation (Dahlgren, VA)
    …The ideal candidate will bring deep expertise in Unix/Linux administration, network security , and performance optimization, ensuring system reliability, ... Senior Systems Administrator (Unix/Linux) - (758)...file systems, and library structures. + Support and enforce network security policies, including the use of… more
    EPS Corporation (11/13/25)
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  • Senior IAM Administrator

    Insight Global (Herndon, VA)
    Job Description This position is for our large software client. The Senior Identity and Access Management (IAM) Administrator is responsible for leading secure, ... updates, and auditing across Active Directory, Azure AD, and related services. The Senior IAM Administrator develops and maintains scripts to improve efficiency,… more
    Insight Global (12/09/25)
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  • Senior Linux Systems Administrator

    Leidos (Aurora, CO)
    …has a new and exciting opportunity for a ** Senior Linux Systems Administrator ** in our **National Security Sector's (NSS) Cyber & Analytics Business Area ... . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission...Security !** Join our team as a **Linux Systems Administrator ** , where you'll provide crucial support for the… more
    Leidos (10/09/25)
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  • Senior Network Administrator

    TekSynap (Radford, VA)
    …in computer science or equivalent years of experience. **Overview** We are seeking a Senior Network Administratorto join our team supporting an ITES task order. ... tune network performance, ensuring systems are hardened and compliant with security requirements. + Analyze network utilization and performance metrics using… more
    TekSynap (10/25/25)
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  • Senior Systems Administrator

    ManTech (Fairmont, WV)
    **MANTECH** seeks a motivated and customer-oriented ** Senior Systems Administrator - Windows/Linux Dual-Stack Specialist** to join our team in **Boulder, CO** . ... Support (IS) team and is critical for maintaining the stability, integrity, and security of a high-impact large scale enterprise network infrastructure. The… more
    ManTech (11/05/25)
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  • Senior Linux/Unix Systems…

    SMX (Dahlgren, VA)
    …with ability to obtain and maintain Top Secret clearance + Networking protocols + Network security tools such as firewalls + Vulnerability management + IAT III ... Senior Linux/Unix Systems Administrator (4411)at SMX(View...Research, Development, Test & Evaluation environments, ensuring the functionality, security , and efficiency of Unix/Linux-based systems, networks, and software… more
    SMX (12/04/25)
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  • Senior IT / System Administrator

    R&D Industries, Inc. (Milford, IA)
    …support and are expected to have leading-class knowledge of hardware, software, networking, and security . A Senior Systems & Network Engineer should have ... Position Overview Our Senior IT / System Administrators & Network...Certifications: * Cisco CCNA/CCNP/CCDA/CCSP/CCIE * CompTIA Net+ * CompTIA Security + * Microsoft 365 Administrator Expert *… more
    R&D Industries, Inc. (09/17/25)
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