Senior Enterprise Systems Admin - Cybersecurity & Uptime
Booz Allen Hamilton
Booz Allen Hamilton seeks an experienced system administrator to lead enterprise-level IT infrastructure for a mission-critical customer. You will manage Windows-based systems, perform Tier I/II support, monitor performance, apply patches, and document configurations and procedures. You will collaborate across teams to modernize the network, strengthen cybersecurity posture, and provide insights from metrics. #J-18808-Ljbffr Booz Allen Hamilton
$116.35k - $210.33k
...behind the mission-critical systems that keep our nation secure.... ...resilience across the USCG enterprise. As a Sr Linux Systems Administrator... ...with cloud engineers, cybersecurity analysts, and program... ...tools to track system health, uptime, and resource usage, ensuring...SeniorFull time$120k - $180k
...work closely with the ISSM, cybersecurity teams, and program security... ...across a complex, multi-domain enterprise. You'll sit within the... ..., embedded alongside systems engineers, cybersecurity analysts... ...Produce recurring metrics, uptime reports, and executive-level...SeniorFull timeWork experience placementCasual workRelocation package- ...servers, databases, and mission‑critical systems. Manage virtualization environments (... ...vulnerabilities, and maintaining compliance with cybersecurity protocols. Monitor system health,... ...and maintenance checks to ensure uptime and reliability. Provide technical support...Senior
$77.6k - $176k
System Administrator, SeniorThe Opportunity: Your technical expertise makes you the team... ...to help us design, deploy, and maintain Enterprise Cross Domain Solutions for an enterprise environment that supports critical cybersecurity mission customers. As a Linux System...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work$77.6k - $176k
System Administrator, SeniorThe Opportunity: Your combination of people skills and system... ...administrator who specializes in enterprise-level system and network administration... ...critical IT infrastructure, strengthen their cybersecurity posture, and enhance the readiness of...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work$107.12k - $140.25k
...is the latest in a line of cutting-edge systems that have been helping customers and partners... ...science, financial modeling, logistics, cybersecurity, and defense. In 2025, the company... ...seeking a highly motivated and versatile Senior IT Administrator to be the dedicated on-...SeniorPermanent employmentFull timeContract workWork at officeLocal areaRemote work- ...Senior Systems AdministratorLocation: Fort Lesley J. McNair, 300 5th Avenue, Washington, DC... ...experienced Cloud Systems Engineer to support enterprise IT infrastructure across Microsoft... ....Ensure security compliance with DoD cybersecurity and IAT Level requirements.Assist in...Senior
- ...Arlington, VA is seeking a seasoned Database Administrator to lead enterprise database environments supporting mission-critical operations... ...and compliance, and collaborate with developers, network and cybersecurity teams on modernization initiatives. #J-18808-Ljbffr...Senior
- STI-TEC is seeking a Senior Systems Administrator to oversee database and systems administration across JDEIS applications in Washington... ...degree or equivalent and have 5 to 9 years of experience in cybersecurity, along with a Top Secret security clearance. The position...Senior
- ...Senior Systems AdministratorWe are seeking an experienced Senior Systems Administrator to... ...applications supporting a Government enterprise. This role is ideal for an experienced... ...software developers, cloud engineers, cybersecurity personnel, and infrastructure teams to...SeniorFull time
$91k - $138.75k
...Job Description Summary The Senior Linux Systems Administrator is responsible for designing... ..., automating, and maintaining enterprise Linux server infrastructure and developer... ...Science, Information Technology, Cybersecurity, or equivalent combination of education...SeniorPermanent employmentFull timeContract workWork experience placementWork at officeLocal area- ...Analytica is seeking a seasoned and adaptable Senior System Administrator to join our... ...vision to optimize, manage, and secure our enterprise hardware, software, and network ecosystems... ...resolution. Coordinate with network, cybersecurity, engineering, and service desk teams...SeniorFor contractorsLocal area
$77.6k - $176k
...Job Number: R0232760 System Administrator, Senior The Opportunity: Your technical expertise... ...help us design, deploy, and maintain Enterprise Cross Domain Solutions for an enterprise... ...environment that supports critical cybersecurity mission customers. As a Linux...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work$80k - $90k
...Senior Systems Administrator The Solar Energy Industries Association (SEIA) is the national trade association for the solar and storage... ...exposure across various technologies, cloud platforms, cybersecurity, and tools. The role works closely with internal teams, vendors...SeniorFull timeWork at officeLocal areaRemote work3 days per week$75k - $85k
...government customers. We are seeking a Senior Systems Administrator to play a key role in a... ..., monitoring, and optimization of enterprise IT infrastructure supporting the customers... ...action. You will work closely with cybersecurity personnel, engineers, help desk staff,...SeniorTemporary workImmediate startRemote work- Systems Planning and Analysis, Inc. (SPA) is seeking a Classified System Administrator to support the Cybersecurity Program for classified infrastructure. You will design, build, configure... ...STIGs, patch systems, and mentor junior admins in a DoD environment. The role...Senior
- Leidos is seeking a Systems Administrator in Suitland, MD to support ONI. You will provide specialized cybersecurity and IT support for critical intelligence systems used in parametric modeling, engineering analysis, and foreign material exploitation. You will maintain...Senior
- Tripoint Solutions is seeking an experienced Systems Administrator to deliver advanced Tier III technical support for enterprise IT infrastructure, end-user computing environments, cybersecurity operations, and COTS applications. The role is on-site in Washington, DC, with...Senior
- ...Technology Solutions is seeking an energetic Systems Administrator to keep critical... ...secure, and aligned with mission-critical cybersecurity mandates across multi-classification enclaves... ..., TEST, INT, STAGE, and PROD, building enterprise capabilities for the War Data Platform...Senior
- TechFlow, Inc. seeks a Senior Systems Administrator to maintain and optimize the enterprise IT infrastructure for a critical DOD program, ensuring security, stability... ...high availability. You will collaborate with cybersecurity, engineers, and government stakeholders to...Senior
- Leidos in Suitland, MD seeks a Systems Administrator to support ONI with cybersecurity and IT operations for critical intelligence systems. The role covers high-end workstations, cloud administration, accreditation, and security compliance in a demanding technical environment...Senior
- A cybersecurity solutions provider is seeking an experienced System Administrator to manage and maintain RedHat Linux virtual machines within a cloud infrastructure. The ideal candidate will have extensive Linux administration experience and required security clearances...Senior
- Leidos in Suitland, MD is seeking a Systems Administrator to support ONI activities, providing specialized cybersecurity and IT support for critical intelligence systems in parametric modeling, engineering analysis, and foreign material exploitation. You will manage a...Senior
- A technology solutions provider is seeking a Senior Systems Administrator for a remote position. The role involves designing and maintaining... ...cloud, automating processes, and ensuring compliance with cybersecurity standards. Ideal candidates should have extensive experience...SeniorRemote jobFlexible hours
- ...is seeking a highly experienced Senior RHEL Administrator to provide enterprise‑level administration, security, and... ...stringent government and DoD/DON cybersecurity standards. This position requires... ...optimize RedHat Enterprise Linux systems across physical and virtual...Senior
$99.3k - $158.69k
...The Patch Management Specialist, Senior oversees enterprise patch management strategy and execution... ...using them to drive accountability with system owners. Required Qualifications... ...vulnerability management into broader cybersecurity and IT governance frameworks. Compensation...SeniorContract workWork at officeRemote work$130k - $140k
...services to federal customers. While cybersecurity is our specialty, we also focus on ICAM... ...digital engineering and transformation, and enterprise AI and intelligent automation. We... ...benefits and opportunities we offer. Senior Systems Administrator Seven (7) years of...SeniorFor contractors$77.6k - $176k
Job Number: R0232223 System Administrator, Senior The Opportunity Your technical expertise makes the team hero, solving... ..., and maintain Cross Domain Solutions for an enterprise environment that supports critical cybersecurity mission customers. As a Linux System...SeniorLocal area- ...Computational Physics, Inc. (CPI) is seeking a Senior Linux System Administrator to support our... ..., configuring, and patching Red Hat Enterprise Linux (RHEL) systems Experience applying... ...Ansible, Puppet) Experience with DoD cybersecurity policies and frameworks is highly...SeniorTemporary workRemote workFlexible hours
- Integrate enterprise infrastructure across on-premises, private cloud, hybrid cloud, and... ...management activities Coordinate with cybersecurity teams on RMF, NIST, FISMA, vulnerability... ...Computer Science, Information Technology, Systems Engineering, Engineering, or a related...SeniorLocal areaRelocationVisa sponsorshipWork visa
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Enterprise Systems Admin - Cybersecurity & Uptime. Be the first to apply!
- remote systems administrator Washington DC
- computer systems administrator Washington DC
- application system administrator Washington DC
- office 365 and sharepoint system administrator Washington DC
- IT infrastructure administrator Washington DC
- microsoft systems administrator Washington DC
- enterprise administrator Washington DC
- junior systems administrator Washington DC
- systems administrator Washington DC
- system admin Washington DC

