Sr. Linux System Administrator / System Engineer
$151k - $170kRed Arch Solutions
**An active TS/SCI with Polygraph is required for this position **Position OverviewWe are seeking a highly experienced Senior Linux System Administrator / System Engineer to support a high-visibility mission environment within the Intelligence Community. This role requires deep expertise in Linux system administration, virtualization, automation, and security compliance, along with the ability to operate in a fast-paced, mission-critical setting.Key ResponsibilitiesAdminister, maintain, and optimize Linux-based systems (RHEL/CentOS) in a secure enterprise environmentSupport mission-critical infrastructure with a focus on availability, performance, and securityCreate, configure, and manage VMware virtual machinesInstall, configure, and maintain JBoss application environmentsImplement automation solutions using Ansible, Terraform, or similar toolsPerform system monitoring, troubleshooting, and root cause analysisSupport security compliance initiatives and system hardening effortsCollaborate with cross-functional teams across storage, networking, and security domainsProvide support for 24x7 operations, including on-call and after-hours responseRequired Qualifications10+ years of experience as a Linux System Administrator/EngineerActive TS/SCI with Polygraph.Strong expertise with Linux (RHEL/CentOS) environmentsExperience with VMware VM creation, configuration, and operationsSecurity+ Certification (required)Experience supporting IC (Intelligence Community) mission environmentsHighly Desired QualificationsActive or recent SYS3 Privileged AccessExtensive experience with JBoss installation, configuration, and administrationHands-on experience with automation tools such as Ansible or TerraformStorage systems and administrationNetworking fundamentals and infrastructure supportSecurity compliance and auditingAuthentication systemsScripting with Shell and/or PythonPhysical server administrationExperience with Oracle Database and potential DBA exposureFamiliarity with JSON (JavaScript Object Notation)Salary range for this position: $151,000 - $170,000 #CJ SummaryLocation: Annapolis Junction, MD, United StatesType: Full TimeExperience: Mid LevelDepartment: Systems
$151k - $170k
...Polygraph is required for this position ** Position Overview We are seeking a highly experienced Senior Linux System Administrator / System Engineer to support a high-visibility mission environment within the Intelligence Community. This role requires deep...SeniorFull timeContract workWork experience placementLocal area- ...ManTech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national...SeniorWork at office
MANTECH
Laurel, MD14 hours ago - OverviewSenior Linux Systems AdministratorLOCATION: Columbia, MD (Onsite)JOB STATUS: Full-... ...highly experienced Senior Linux Systems Administrator to build, secure, and sustain the... ...QUALIFICATIONS / SKILLSRed Hat Certified Engineer (RHCE) or Red Hat Certified Architect...SeniorMonday to Friday
$92.3k - $166.85k
Leidos has a new and exciting opportunity for a Senior Linux Systems Administrator in our Intelligence Sector’s, Cyber & Analytics Business Area... ...CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software,...SeniorFull timeImmediate startFlexible hours$77.6k - $176k
Linux System Administrator, SeniorThe Opportunity:Install systems on dedicated infrastructure, ensure the infrastructure is functional and available, and update and patch critical systems. Provide customers with insight into their network through monitoring and performance...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work$100k
Description Are you passionate about shaping secure, IT systems in classified environments? Do you want to influence... ...like you to join our team at APL! We are seeking a Linux System Administrator to join the RF Engineering group to support Hardware‑in‑the‑Loop (HiL)...SeniorInterim roleJohns Hopkins Applied Physics Lab
Laurel, MD1 day ago- DescriptionAre you interested in joining SAIC to be part of our partnership providing high quality engineering advisory services, system planning, integration, and architecture to our government intelligence agency customer? Then consider joining the members of the Enterprise...SeniorFull time
- ...MANTECH is seeking a motivated, career and customer-oriented Linux System Administrator in Laurel, MD. Become an integral part of a diverse team that delivers enterprise infrastructure capabilities for a global workforce performing a wide range of missions in defense...Contract workWork at officeShift work
MANTECH
Laurel, MD14 hours ago $154.05k - $278.48k
Leidos has a new and exciting opportunity for a Sr. Systems Engineer in our Intel Sector's Cyber & Analytics Business Area (CABA). Our talented... ...team.Experience working as an admin on Windows Server and Linux Server platforms.At Leidos, the opportunities are boundless....SeniorFull timeImmediate startFlexible hours$130k - $150k
...SCI with Polygraph is required for this position **Description:Red Arch Solutions is seeking a skilled and detail-oriented Linux System Administrator to join our IT infrastructure team in Annapolis Junction, Maryland. The ideal candidate will have strong experience...- ...CYBERCORE TECHNOLOGIES TEAM.We are GROWING ! Bring your Technical Capabilities, Enthusiasm, and Team Focus.New Opportunity for a LINUX System Administrator - TS/SCI Poly.Job Responsibilities:Key Responsibilities: Seeking Linux Systems Administrator to join team in support of...
$116.35k - $210.33k
Linux Systems Administrators / Engineers are needed across several Leidos prime programs in our Intelligence Sector’s Cyber & Analytics Business Area (CABA). Our talented team is at the forefront of Security Engineering, Computer Network Operations (CNO), Mission Software...Full timeImmediate startRelocation packageFlexible hours$119.5k - $275k
Federal HPC Linux System Administrator, (Clearance required TS/SCI with Poly) On-Site, MarylandThis role has been designed as ‘’Onsite’ with... ...Education and Experience: Bachelor’s degree in Computer Science, Engineering, or related area of study OR equivalent work experience 3...Full timeWork experience placementWork at office$190k - $304k
ResponsibilitiesPeraton is seeking a Systems Engineer to support our Cyber Mission business unit located in Annapolis Junction, MD. The team supports multiple products that automate manual tasks so that mission customers can focus on more complex issues. The team employs...SeniorContract workFor contractorsFlexible hoursShift work$156.4k - $234.6k
...incredible opportunities to work on revolutionary systems that impact people's lives around the... ...solutions for global security. Our Engineering and Sciences (E&S) organization pushes the... ...are looking for you to join our team as a Sr Principal Cyber Systems Engineer based in...SeniorFull timeRelocationShift work$87.1k - $157.45k
...a new and exciting opportunity for a Systems Engineer in our Intelligence Sector’s, Cyber &... ...documentation and supporting Systems Administration (SA) and GOTS products. The ideal candidate... ..., configure, and manage Linux-based systems (RedHat/CentOS/Rocky)Support...Full timeImmediate startFlexible hours- ...Senior Linux Systems Administrator Our client needs a seasoned infrastructure expert to keep a large, mission-critical enclave running smoothly — think servers, virtual machines, managed switches, NAS, VLANs, and VPNs all working in concert. If you enjoy owning the...
The Maven Group Co
Annapolis Junction, MD1 day ago - General information Job Posting Title Windows / Linux System Administrator Date Thursday, April 16, 2026 City Annapolis Junction... ...relevant experience in systems administrator or systems engineering. o Experience with Windows / Linux Server environments,...Minimum wageFull timeContract workTemporary workWork experience placement
$131.3k - $237.35k
Leidos has an exciting and challenging opportunity for a Sr. Systems Engineer - Modeler in our Intel Sector-Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical...SeniorFull timeFor contractorsWork experience placementFor subcontractorImmediate startFlexible hours- ...sponsor an employment Visa. What You’ll Be Doing (We don’t love the bullet points, but we love the work!) As the Linux System Administrator, you'll get to be part of a team responsible for providing support for a large-scale Linux system including installation...Visa sponsorshipWork visa
GIGATEC Engineering
Annapolis Junction, MD1 day ago $176k - $282k
ResponsibilitiesThe AP Infrastructure Team is seeking a strong Network Engineering and Systems Engineering background to support Cloud Network Operations using modern technologies. Responsibilities include reviewing customer-submitted requirements, performing end-to-end...SeniorContract workShift work$101k - $129k
...Systems Administrator, Bulk Data Transport Operations Make an Impact Where It Matters Most At Intelliforce, we support mission infrastructure... ...partners. This is a strong fit for someone who enjoys Linux, operational support, and keeping high-availability systems...Contract workFor contractorsImmediate startWorldwideVisa sponsorshipIntelliforce-IT Solutions Group, LLC.
Annapolis Junction, MD1 day ago- Requires a minimum TS/SCI CI PolySenior Linux/Network AdministratorJob SummaryThe... ...will be responsible for performing daily system administration and O&M support activities in support... ...position entails supporting system engineering requests to meet operational needs, as...Senior
$10k
...: Columbia Technology Partners is seeking a skilled Linux System Administrator to support enterprise infrastructure in a secure, high-performance... ...and implement proactive improvements Collaborate with engineering, security, and infrastructure teams to support upgrades,...Temporary workFor contractorsLocal areaColumbia Technology Partners
Annapolis Junction, MD5 days ago$75k - $135.96k
...a passionate team solving these complex problems, then Rotary and Mission Systems is the place for you. The Work Lockheed Martin Rotary & Mission Systems is seeking a full-time Systems Engineer. You will participate in design, development, integration, and testing of new...SeniorFull timeTemporary workWork at officeRemote workRelocationFlexible hoursShift work3 days per weekLockheed Martin Corporation
Laurel, MD15 hours ago$230k - $262k
...DescriptionRed Arch Solutions is hiring a Systems Engineer to join our program in Annapolis... ...Tools Suite across the organization’s Linux environments. This role is responsible... ...processesExperience performing basic System Administration including installation, configuration,...Senior- ...Telework: None Basic Requirements: ~20 years experience as a system engineer ~ Bachelor’s degree in a technical discipline ~5... ...Job Description: Configure, manage and troubleshoot Linux operating systems. Installs/loads operating system software, troubleshoot...SeniorFull timeImmediate startRemote work
- ...discovery, and scalable national security outcomes.As a Senior Linux System Administrator on this program, you will help deliver enhanced HPC... ...to grow your technical expertise alongside highly skilled engineers, collaborate with exceptional teammates, and directly contribute...SeniorContract workTemporary workLocal areaImmediate start
$165k - $196k
..., you’re in the right place! We are looking for a Senior Linux Systems Administrator who shares our drive to push boundaries and build secure,... ...seven (7) years of experience as a Systems Administrator/Engineer on programs and contracts of similar scope, type, and complexity...SeniorHourly payContract workWork experience placementImmediate startRemote workFlexible hours$153k - $181k
...REQUIRED Driven to design modern system architectures and automate complex Linux environments? If you love... ...for a Senior Linux Systems Administrator who shares our drive to push boundaries... ...environment and mentor junior engineering staff. Collaborative...SeniorHourly payContract workWork experience placementImmediate startFlexible hours
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