Systems Administrator
Vosper Thornycroft Group
Overview We are seeking a skilled Systems Administrator to manage, maintain, and support enterprise IT infrastructure. This role is responsible for ensuring the reliability, security, and performance of servers, networks, and systems while supporting day-to-day operations and long-term IT initiatives. What will you do? Install, configure, and maintain servers, operating systems, and enterprise applications Monitor system performance, availability, and security across environments Manage user accounts, permissions, and access controls (Active Directory, IAM) Perform system patching, updates, and vulnerability remediation Troubleshoot hardware, software, and network issues across infrastructure Support backup, disaster recovery, and business continuity processes Maintain system documentation, configurations, and standard operating procedures Collaborate with network engineers, security teams, and developers to support infrastructure needs Automate routine tasks using scripting (PowerShell, Bash, Python) Ensure systems comply with security policies and regulatory requirements Do you have what it takes? Active TS/SCI with Polygraph required. Bachelor’s degree in Information Technology, Computer Science, or related field (or equivalent experience) 5+ years of experience in systems administration or IT operations Strong experience with Windows and/or Linux server environments Experience with Active Directory, DNS, DHCP, and Group Policy Familiarity with virtualization technologies (VMware, Hyper‑V) Knowledge of networking fundamentals (TCP/IP, firewalls, VPNs) Experience with system monitoring tools and log managementProficiency in scripting or automation (PowerShell, Bash, Python) #J-18808-Ljbffr Vosper Thornycroft Group
- ...requirements and track completion through the automated tracking system. Create user accounts. Manage network email services. Perform... ...the NRO enterprise (COMM). Qualifications 5 years of system administration experience or related technical IT experience. Experience with...SuggestedWork at office
$115k - $145k
...Overview Systems Planning and Analysis, Inc. (SPA) delivers high-impact, technical solutions to complex national security issues. With... ...: Objective. Responsive. Trusted. SPA is hiring an IT Systems Administrator to support a multi-vendor infrastructure with a focus on Linux...SuggestedWork at officeImmediate startRemote workFlexible hours- ...About the Role Redhorse transforms the way government uses data and technology to support its mission. We are seeking an elite System Administrator to serve as the technical authority for the design, development, and deployment of a mission‑critical web‑based internal...SuggestedContract work
- ...Fulcrum Vets is looking to add a Senior Systems Administrator with expertise in supporting Windows Server Active Directory environments to join our team. This position will play a key role in the management, optimization, securing, and troubleshooting of environments,...SuggestedFull timeWork experience placementFlexible hours
$7.5k
...Job Brief System Administration; Help Desk Job Description RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. We do...SuggestedWork experience placementImmediate startFlexible hours- ...ACTIVE TS/SCI WITH FULL SCOPE POLY REQUIRED*** Job Description The Systems Engineer (Storage) evaluates, implements and maintains Storage Area Networks (SANs) and storage systems across enterprise platforms. Responsibilities include the evaluation, design, implementation...
- ...government and commercial entities. Our services improve Information System networking performance and compliance and protect electronic... ...demonstrated experience: Demonstrated experience with system administration in Windows & Linux/Centos Server environment. Demonstrated...Contract workFor contractorsFor subcontractorWork at officeLocal areaImmediate start
- ...MANTECH seeks a motivated, mission-oriented Senior Systems Administrator to join our team in Chantilly, VA. As a Senior Systems Administrator you will be responsible for providing a full range of Tier 2/3 IT support services and expertise to customer activities,...
- ...Overview Job Title: Senior Systems Administrator Department: IT / Engineering Reports To: RSekure Program Manager Location: Chantilly, VA Schedule: Monday – Friday Hours: Full-time, 40-hours/week Clearance Req: TS/SCI – Full-Scope Polygraph Summary RSekure is seeking a...Full timeFor contractorsWork experience placementWork at officeLocal areaMonday to Friday
$103.8k - $218.1k
...Job Title: Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 25% Type of Travel: Continental US What You’ll Get to Do: CACI...Full timeContract workWork experience placementFlexible hours- ...Relativity Senior Systems Administrator Employment Type: Full Time Department: Legal/IT Responsibilities Design and implement Automated Litigation Support (ALS) software solutions primarily consisting of COTS tools such as Relativity, iPro, CaseMap, etc. Maintain ALS system...Full timeWork at officeFlexible hours
- ...Are you ready to be the technical backbone of a mission that matters? Leidos is seeking a highly motivated Senior Systems Administrator/Help Desk Engineer to support a cutting‑edge Agile software development program, Chinook, for an Intelligence Community customer. In...Contract workShift workDay shiftAfternoon shift
$130k
...Employee and Family and 401k up to 8% match and more. Location: Chantilly, VA DESCRIPTION Our client has an opening for a System Administrator to support the National Security Sector, to provide technical expertise and to operate and maintain the IT environment. RESPONSIBILITIES...$116.35k - $210.33k
Description Leidos is seeking a System Administrator for a technical development program supporting the Sponsor's Attribute Services within the IDAM/ICAM space. As a System Administrator on this program, you will design, develop, implement, and maintain a Cloud‑Native...$99k - $165k
...This position requires an active U.S. Government Security Clearance at the TS/SCI level with required polygraph. Are you a System Administrator that likes working on important and high visibility projects? Then we need your help! We have an urgent and immediate need for...Immediate start- Employment Type Full Time, Senior-level Department Legal/IT Overview CGS is seeking a Senior Systems Administrator to join our team supporting a wide-ranging technical support initiative for a large Federal agency. CGS brings motivated, highly skilled, and creative people...Full timeContract workFor contractorsWork at office
$7.5k
...Job Brief System Administration; Help Desk Job Description RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. They...Work experience placementImmediate startFlexible hours- ...Overview Senior Discovery IT System Administrator — Employment Type: Full-Time, Executive-Level. Department: Legal. CGS is seeking a dedicated Senior Discovery IT System Administrator to join a fast-paced and hard-working team to assist with any legal accounts. As a Senior...Full timeFor contractorsFlexible hours
$107k - $160.5k
...innovative solutions that span satellite, launch, ground, and cyber systems for defense, civil and commercial customers. When you join... ...) or its clones (CentOS, Oracle, Rocky, Alma) Linux systems administration, including provisioning, patching individual systems,...Full timeImmediate startRemote workRelocation packageFlexible hours$69.4k - $158k
...Overview Engineering to make a system more resilient and efficient frees up time and money to build more capabilities. Whether you come from a background in network engineering, systems administration, or software development, if you have a passion for making systems better...Local area$120k - $160k
...Description Linux System Administrator Altamira Technologies has a long and successful history providing innovative solutions throughout the U.S. National Security community. Headquartered in McLean, Virginia, Altamira serves the defense, intelligence, and homeland...Worldwide$110k - $160k
...Linux System Engineer Location: Chantilly, VA Clearance: Top Secret (SCI CI Poly Eligible) Work Type: Full Time (Onsite... ...discipline plus 4-6 years of professional experience as a Systems Administrator or similar technical role. Proactive self-starter...Full timePart timeWork experience placement$150k - $170k
...of build-out, maintenance, and configuration of virtualized systems. Deployment of updates, IAVA patches, and Anti-Virus updates.... ...level 2 or higher). Amazon Web Services (AWS) (C2S) systems administration. Linux operating systems (e.g. Red Hat, Centos, Ubuntu, Fedora...Contract work$90.3k - $189.6k
...Job Title: Linux Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * * * The...Full timeContract workWork experience placementFlexible hours$85k - $141.6k
...Senior Linux Systems Administrator Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with...Hourly payContract workTemporary workWork experience placementWork at officeLocal areaRemote work- ...About the job LINUX Administrator Linux Administrator Virginia, USA Compensation 150k to 200k A Government entity is... ...Troubleshoots and resolves issues and maintain web application hosting systems, reliability and uptime of production applications Support...
$150k - $180k
...to other position specific requirements which may impact salary. Position Overview Amatriot is seeking an experienced Senior Systems Administrator to support the National Programs Intelligence Systems & Application Operating Unit. The SITE III ITS Task Order effort is...Full timeLocal areaWeekend work$145k - $165k
...Overview Systems Administrator Herndon, VA TS/SCI with Poly At Bcore, our strength comes from how we deliver impact to the mission. Whether it’s architecting critical IT solutions, producing actionable intelligence, or developing cutting edge technology, we succeed because...- Senior Systems Administrator Location US- ID 2026-1547 Remote Yes Overview JOB TITLE: Senior Systems Administrator AGENCY SUPPORTED: U.S. Department of Justice (DOJ) - MEGA 6 Automated Litigation Support POSITION TYPE: Full-Time, Contingent Upon Award...Full timeContract workFor contractorsWork at officeRemote workWork from homeHome officeFlexible hours
- ...Job DescriptionWe are seeking a highly skilled System Administrator/Cloud Engineer to enhance our existing technical team supporting the advancement of AI/ML/Data Science technologies, in Herndon, VA.The successful candidate will be a self-motivated, innovative, cloud...
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