Senior Systems Administrator - TS/SCI Clearance
$77.6k - $176kPhase2 Technology
Booz Allen Hamilton in Washington, DC seeks a Senior System Administrator to lead enterprise-scale infrastructure and security for mission-critical systems. The role requires 8+ years of sys/admin experience, TS/SCI clearance, and a strong background in Windows/Linux, databases, and Java stacks. You will mentor teams, improve reliability, and coordinate cross-org efforts. Compensation ranges from $77,600 to $176,000 per year, with benefits and opportunities for career growth. #J-18808-Ljbffr Phase2 Technology
$104.2k - $138.9k
...implementation! This is a hybrid role working on-site 3 days/week in Arlington VA area. Candidates must have a current TS/SCI clearance.The Senior System Administrator leads the administration, maintenance, security, and operational resilience of complex enterprise...SeniorRemote work3 days per week- FGS LLC is seeking an experienced Enterprise Systems Administrator to support the Office of Naval Intelligence in Suitland, Maryland. The... ...computing environments. We require US citizenship, TS/SCI clearance, a Master’s degree in engineering or related field, and at...SeniorWork at office
- ...protect our country from threats. Job Description Systems Administrator Maintains an organization's computer systems'... ...for a Windows Systems Administrator that holds an active TS/SCI eligible clearance for a position located in Arlington, Va. This position...SeniorWork at officeLocal areaRemote work
$125k - $225k
A technology solutions company in Laurel, MD, is seeking a Database Administrator with a strong background in Oracle systems. This full-time role requires a US citizenship and active TS/SCI clearance. The right candidate will have over ten years of DB experience and be...SeniorFull time- ...solutions provider in Maryland is seeking an experienced System Administrator to manage Linux virtual machines and ensure system compliance... ...in system administration, and must possess an Active TS/SCI clearance and Security+ certification. This role offers a competitive...Senior
- Leidos in Suitland, MD seeks a Systems Administrator to support ONI with cybersecurity and IT operations for critical intelligence systems... ...technical environment. Required qualifications include TS/SCI clearance with polygraph and 8570 Level II certification, 5+ years...Senior
- ...cybersecurity solutions provider is seeking an experienced System Administrator to manage and maintain RedHat Linux virtual machines... ...administration experience and required security clearances, such as Active TS/SCI with full scope polygraph and Security+ certification...Senior
- A&M Technologies, Inc. in Suitland, MD is seeking a Senior Systems Administrator III to join the O&M team, supporting a high-availability federal environment. The role requires TS/SCI clearance, DoD 8140/8570 certification, and extensive experience with Windows, RHEL, VMware...Senior
- North Point Technology is looking to hire a Systems Administrator / Help Desk Engineer to support a cutting‑edge Agile software development... ...customer. The qualified candidate must have an active TS/SCI security clearance and will ensure the stability, security, and...Day shiftAfternoon shift
- WOOD Federal Solutions in Laurel, Maryland is seeking a highly skilled IT systems administrator with TS/SCI clearance to support, troubleshoot, and maintain complex IT environments. The role covers server, storage, network, and virtualization management across Linux, UNIX...Senior
- Share Point System Administrator - Level 4 (TS/SCI Clearance Required) Alexandria, United States | Posted on 08/11/2026 Candidate must have a Bachelor's degree with 8 years of relevant experience, a Master's degree with 6 years, an Associate's degree with 10 years, or...
$110k - $120k
Jr/Mid level RHEL Systems Administrator - TS/SCI clearance required Ft. Washington, MD We pride ourselves on an open, and honest culture in the workplace which builds morale conducive to inspiring growth on our team, while balancinglifestyle by supporting personal and...Hourly payTemporary workLocal area- Koniag Data Solutions in Arlington, VA is seeking a Systems Administrator with an active TS/SCI clearance for overnight support. The position requires hours of 11pm-7am, Sunday night through Friday mornings, and will support the government customer in Arlington, VA. Responsibilities...Night shiftDay shift
- ...qualified candidate skilled in cloud-based and distributed systems administration. The role involves supporting containerized workloads... ...practices are followed. Suitable candidates must have an Active TS/SCI Clearance and at least 1-3 years of relevant experience. A Bachelor...
- Systems Administrator - (Active TS/SCI security clearance with a current polygraph ) College Park, United States | Posted on 08/11/2026 Fifteen (15) years of experience as an SA in programs and contracts of similar scope, type, and complexity is required. Bachelor’s degree...
- The Senior Systems Administrator at i3Solutions, Inc. leads the design, deployment, and performance tuning for mission-critical enterprise systems in a security-conscious environment. You will implement and support ACCS infrastructure, maintain STIG/IAVA compliance, develop...Senior
$10k
...Systems Administrator III (Senior) Location: Suitland, MD (On-Site) Clearance: Active Top Secret/SCI w/ CI Poly (Required) Certification: DoD 8140/8570 Compliant (Security+ CE or qualifying certification required) Employment Type: Full-Time Position Summary...SeniorFull timeContract workTemporary workImmediate startFlexible hours$124.09k - $161k
...Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be... ...Hardware, Network Systems Certifications: None... ...Network Computer Systems Administrator with GDIT. A career in... ...Clearance Level: Active TS/SCI with Polygraph...SeniorFull timeTemporary workImmediate startRemote workWorldwideFlexible hours- Belay Technologies is seeking a Senior System Administrator to join our intel team in Columbia, Maryland. You will support Life Cycle Sustainment... ...IaC with Ansible/Terraform. DoD 8570 IAT I compliance and TS/SCI with polygraph desirable. #J-18808-Ljbffr Belay...Senior
- ...group of computers running on one or more operating systems The Sr Systems Administrator is responsible for the operations, maintenance,... ...of the ITIL framework ~ Must have current TS/SCI security clearance ~ Must be a U.S. Citizen Desired Core Skills...SeniorContract workWork experience placementLocal areaRemote workShift workNight shift
$125k - $200k
Summary The MIL Corporation is seeking a Senior Network Engineer with TS/SCI, FS (Network Engineering, Associate)... ...minimum duties:Assisting the System AdministratorsAssisting the Lead Network... ...engineer or network technician.Clearance All applicants for this position must...SeniorFull timeContract work- ...Transform technology into opportunity a Network Computer Systems Administrator with GDIT. A career in enterprise IT means connecting... ...Network Professional (CCNP) preferred. ~ Security Clearance Level: Active TS/SCI with Polygraph ~ Location: 100% On-Site required...SeniorRemote work
- ...Consulting Services, Inc. in Laurel, Maryland is seeking a System/Network Administrator Level 2 to support and maintain IT systems across client/... ...troubleshooting. Candidates must be a U.S. citizen with an active TS/SCI with Polygraph and hold a technical bachelor's degree with...SeniorFull time
- DCCA is seeking a Program Manager to oversee complex government contracts in the Maryland region. The role requires active TS/SCI clearance with polygraph and extensive program management experience on large-scale programs. The individual will lead contract execution,...SeniorContract work
- ...The Fountain Group is seeking a Senior Software Test Engineer in Washington, D.C. The role necessitates an active TS/SCI clearance with Full Scope Polygraph and at least 10 years of experience in software development and testing. Key responsibilities include the development...Senior
- ...Leidos is seeking a Senior Software Engineer with TS/SCI clearance to join our mission-driven team in Maryland. You will design and implement data-centric... ...-based computing, AI/ML, and cross-domain transfer systems. You will work in a DevSecOps environment, lead integration...Senior
$148.8k - $306.5k
...seeking a Database Engineer to manage and optimize database systems for federal clients in Arlington, Virginia. This role involves... ...and 8 years of experience in database management. An active TS/SCI clearance is required. The salary range for this position is $148,800—$...Senior- ...high-risk programs. The ideal candidate will have significant experience in information systems architecture and telecommunications design. A Bachelor's degree and active TS/SCI clearance are required for this role, along with recognized certifications. Join us to impact...Senior
- LTC Solutions, LLC is seeking a Senior Naval Logistics Integration (NLI) / Marine Logistics Integration (MLI) Manager to lead Joint... ..., VA. This contingent, full-time role requires an active TS/SCI clearance and experience across HQMC, Joint Staff, Navy, and related defense...SeniorFull time
- ...Medium is looking for a Senior Java Full Stack Developer to join their agile software development team in Washington, DC. The role... ...should have a minimum of 7 years of experience, an active TS/SCI clearance, and a degree in Computer Science. Enjoy a great compensation...Senior
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