• PKI Systems Administrator

    General Dynamics Information Technology (Washington, DC)
    …5 + years of related experience **US Citizenship Required:** Yes **Job Description:** PKI Systems Administrator Advance how our customers operate while ... you advance your career. Join GDIT as a PKI Systems Administrator and you will build an impactful career in enterprise IT, collaborating with people who are… more
    General Dynamics Information Technology (12/17/25)
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  • PKI System Administrator

    ASM Research, An Accenture Federal Services Company (Washington, DC)
    … configuration, update and troubleshooting. + User driven with day-to-day knowledge of PKI system , unlock shared mailboxes, and assist with projects and support ... team with PKI related incidents and Department wide initiatives while maintaining...other security protocols. + Designs, develops or recommends integrated system solutions ensuring proprietary/confidential data and systems more
    ASM Research, An Accenture Federal Services Company (01/10/26)
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  • System Administrator Lead

    System One (Mclean, VA)
    Job Title: System Administrator Lead Location: Arlington, Virginia Type: Contract To Hire Contractor Work Model: Onsite Security Clearance: Top Secret w/ SCI ... eligibility Duties and Responsibilities: Leads a team of system administrators responsible for enterprise IT systems . * Manages escalated incidents, patch… more
    System One (12/26/25)
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  • Systems Administrator

    BAE Systems (Sterling, VA)
    …our future and protect our freedom. BAE Systems is looking for a Senior Systems Administrator to provide comprehensive support to all aspects of system ... such as: + VMware Certified Professional (VCP) + RedHat Certified System Administrator /Engineer (RHCSA/RHCE) + Microsoft Certified: Windows Server… more
    BAE Systems (12/09/25)
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  • Senior Systems Administrator

    General Dynamics Information Technology (Washington, DC)
    …+ years of related experience **US Citizenship Required:** Yes **Job Description:** Senior Systems Administrator Own your opportunity to join our team, bringing ... becomes better. GDIT has an immediate opening for a Systems Administrator to fill a Core Services...system security controls. + Provide support to IT systems including day-to-day operations, monitoring and problem resolution for… more
    General Dynamics Information Technology (01/05/26)
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  • System Administrator - Linux…

    The Metamorphosis Group (Chantilly, VA)
    System Administrator - LINUX - TS/SCI FSP REQUIRED Chantilly, VA Apply Now Job Description The Metamorphosis Group, Inc, TMG, has an immediate opening for a ... Linux System Administrator , who shall be responsible for...vSphere (vCenter/ESXi hosts). 5. Demonstrated experience troubleshooting virtual machine/operating systems in virtual environments. 6. Demonstrated experience creating, updating,… more
    The Metamorphosis Group (12/10/25)
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  • Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated and skilled **Senior Systems Administrator ** to join our sustainment team in **Chantilly, VA.** In this role, you will support a ... including PKI , LDAP, and related authentication technologies + Maintain system documentation, configuration management, and security baselines in tools such as… more
    ManTech (12/13/25)
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  • System Administrator -Linux

    Leidos (Annapolis Junction, MD)
    **Description** ** System Administrator - Linux** **Leidos** has a new and exciting opportunity for a ** System Administrator - Linux** in our **National ... and system security scanning for equipment suites in accordance with the System Security Plans for these systems to rapidly and accurately identify and… more
    Leidos (01/06/26)
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  • Senior Linux System Administrator

    Belay Technologies (Annapolis Junction, MD)
    …and a finalist in 2021! Belay Technologies is seeking a Senior Linux System Administrator (SA). The SA provides support for implementation, troubleshooting and ... maintenance of Information Technology (IT) systems . The SA manages IT system infrastructure...duty, on an on-call basis. + The Level 3 System Administrator shall possess the following capabilities:… more
    Belay Technologies (01/04/26)
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  • Linux System Administrator - US…

    CGI Technologies and Solutions, Inc. (Fairfax, VA)
    **Linux System Administrator - US Citizenship Required** **Category:** Cyber Security **Main location:** United States, Virginia, Fairfax **Alternate ... to join our successful Federal organization as a Linux System Administrator for an enterprise cybersecurity opportunity...Duty (EOD) clearance * 5-7 years of experience Unix system administration * Proficiency in Linux systems more
    CGI Technologies and Solutions, Inc. (12/11/25)
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  • Systems Administrator (Hybrid…

    Serco (Washington Navy Yard, DC)
    …& Qualifications** **Position Description & Qualifications** Serco is seeking a skilled Systems Administrator to support the Navy-owned PMS-ES Integrated Data ... maintenance and patching of on-prem Windows Server environments. + Monitoring system performance and ensuring high availability. + Administering user accounts, group… more
    Serco (01/03/26)
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  • Cybersecurity System Administrator

    M. C. Dean (District Of Columbia, DC)
    Overview MC Dean is seeking a highly skilled **Cybersecurity System Administrator ** to support a secure operational technology environment by integrating ... documentation and incident logs. **Cybersecurity Operations** + Serve as the **Information System Security Manager (ISSM)** for all assigned systems . + Monitor… more
    M. C. Dean (11/26/25)
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  • Systems Network Administrator

    Leidos (Laurel, MD)
    **Description** **Leidos** has a new and exciting opportunity for a ** Systems /Network Administrator ** in our **National Security Sector's (NSS) Cyber & Analytics ... us and make a difference in National Security!** **Job Summary:** Systems /Network administrator will provide support for implementation, troubleshooting and… more
    Leidos (12/20/25)
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  • Senior System Administrator

    Synergy ECP (Columbia, MD)
    Senior System Administrator Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Description Company Description: Synergy ECP is a Service Disabled ... or any other protected class. Job Description: This position is for System Administration support for development and production environments for a mission critical… more
    Synergy ECP (01/14/26)
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  • Systems Administrator

    Leidos (Chantilly, VA)
    Systems Administrator . Your job will be supporting as a Linux administrator to provide system maintenance, systems performance optimization along with ... perform technical software configuration, rebooting, and other remedial actions on customer systems . Work will be conducted on-site at our Chantilly, VA location.… more
    Leidos (01/13/26)
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  • Lead Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, mission-oriented **Senior Systems Administrator ** to join our team in **Chantilly, VA.** As the Lead Senior Systems ... as leading, mentoring, and coordinating with a team of System Administrators. You will play a key role in...2016/2019, to include Active Directory, Domain Controllers, DNS, GPO's, PKI , DHCP, VMware v8, Backup Architectures, Storage Management, and… more
    ManTech (12/19/25)
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  • Data Analytics Visualization Administrator

    BigBear.ai (Annapolis Junction, MD)
    …installation, patching, and regression testing. + Configure secure access to backend systems like SAP HANA, including SSL/TLS and PKI -based single sign-on. ... and PKI authentication. + Background in administering operational software systems in a production environment. About BigBear.ai BigBear.ai is a leading provider… more
    BigBear.ai (11/20/25)
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  • Sr. Integrator - Windows Server

    System One (Washington, DC)
    … monitoring, verifying the integrity and availability of all hardware, server resources, systems , and key processes, reviewing system and application logs, and ... ONLY Open/Additional Info Job Summary : The Senior Integrator will provide systems integration and systems administration support for Operations and Maintenance… more
    System One (01/14/26)
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  • Senior Directory Services Engineer

    Ryder System (Washington, DC)
    …entities, along with supporting technologies (Sites and Services, Group Policy, PKI ). + Manages multi-forest architectures and cross-entity trust relationships to ... roadmaps, and operational best practices for directory services, including ongoing system health monitoring, maintenance, and capacity planning. + Leads resolution… more
    Ryder System (12/01/25)
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  • F5 Load Balance Network Engineer

    Leidos (Reston, VA)
    …updating to new technologies, tuning performance, and implementation of critical system patches. This infrastructure may include on-premises and cloud resources. ... + Ensure Secure Socket Layer/Transport Layer Security (SSL/TLS) offloading and brokering PKI authentication features provided by the F5 appliance is operational at… more
    Leidos (10/18/25)
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