Senior Linux System Administrator
$128k - $214.4kManTech International Corporation
Description & Requirements 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 groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH! 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 defense missions. This role directly supports the Enterprise Infrastructure Services (EIS) organization-the foundation of all Enterprise Information Technology (EIT) for MPO. Responsibilities include but are not limited to: Configure and manage Linux operating systems. Installs/loads operating system software, troubleshoots maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems. Manage IT system infrastructure and any processes related to these systems. Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc. Provide support for the dispatch system and hardware problems and will remain involved in the resolution process. Optimize system operations and resource utilization and perform system capacity analysis and planning. Analyze and resolve complex problems associated with server hardware, applications and software integration. Minimum Qualifications: Bachelor’s degree in a technical discipline from an accredited college or university; an additional 5 years of related experience might be substituted for a degree. 20+ years of experience as a System Administrator or related experience in programs and contracts of similar scope, type, and complexity. Proficient with troubleshooting in a Linux Red Hat environment. Experience with VMWare Demonstrated experience with modern automation/configuration tools such as Splunk or Ansible IAT I certification (DoD 8140 required within 60 days of starting employment. Acceptable certifications include A+ CE/CCNA-Security/CND/Network+ CE /CySA+/GICSP/GSEC/Security+ CE/CND/SSCP) Preferred Qualifications: Experience/familiarization with full lifecycle management of Linux systems, to include provisioning, configuration management and patching. Red Hat Certified System Administration Certification. Experience with NetAPP Clearance Requirements: Must have a current/active Top Secret/SCI with Polygraph Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication. The projected compensation range for this position is $128,000.00-$214,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at View email address on click.appcast.io and provide your name and contact information. ManTech International Corporation
$159k - $188k
...ACTIVE SECURITY CLEARANCE AT THE TS/SCI POLYGRAPH LEVEL IS REQUIRED We are looking for an innovative, motivated Linux Systems Administrator Automation Engineer to join a small, tight-knit, and talented team operating in a hybrid cloud environment. In this role...SeniorHourly payContract workWork experience placementImmediate startFlexible hours- ManTechseeksa 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 defense...SeniorWork at office
- ...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...SeniorImmediate startRemote work
$190k - $200k
...problems. Provide support to IT systems including day-to-day operations, monitoring... ..., etc. Configure and manage Linux, and possibly Windows operating... ...Confluence. Required Experience: Senior level Linux Systems Administration experience is required...SeniorFull timeImmediate startRemote work- ...Description Vibrint is a trusted provider of mission-critical systems and analysis that transform our customers' capacity and... ...____________________________________________________The Senior Linux System Administrator supports the implementation, maintenance, and...SeniorLocal area
$92.3k - $166.85k
...customers as they address evolving national security challenges.About the OpportunityLeidos is seeking an experienced Senior Linux Systems Administrator - Quality Assurance to support Linux environments that enable mission-critical testing, validation, and operational...SeniorFull time- ...Job Description Job Description Job Description: Quevera is seeking a highly skilled Senior Linux Systems Administrator – Kubernetes with an active TS/SCI clearance with Polygraph to support a high-visibility mission environment in Annapolis Junction, Maryland...SeniorTemporary workMonday to FridayShift work
$116.35k - $210.33k
Leidos has a new and exciting opportunity for a Senior Linux Systems Administrator in our Intelligence Sector, Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical...SeniorFull timeImmediate startFlexible hours$135k - $155k
...NAS Patuxent River, MD Security Clearance Requirement: Active Top Secret Telework Eligible? No What You’ll Do As the Senior Linux System Administrator, you will be responsible for ensuring secure configurations, producing accreditation artifacts, and maintaining hardened...SeniorRemote work$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$130k - $150k
...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...Full timeContract workWork experience placementLocal area$161k - $172k
...Responsibilities : Stand up, configure, and maintain Linux servers. Monitoring and patching/upgrades to standard networking... ...MD Proficient with Linux. Minimum of 3 years Linux system administration experience (within the last 3 years). Proficient with AWS...Full time$115k - $130k
...Linux System Administrator Level 2 Location: Fort Meade, MD Employment Type : Full-Time Clearance: TS/SCI with Full Scope Polygraph Salary Range: $115,000 to $130,000 per year OTA is seeking System Administrators to provide support for implementation,...Full time$185k - $200k
Red Arch Solutions is hiring a System Administrator on a priority program in Annapolis Junction, MD. The System Administrator shall be responsible for providing support for a large-scale Linux system including installation of COTS/GOTS/FOSS software, day-to-day operations...Full timeContract workWork experience placementLocal area$158.78k - $165.58k
...motivated individual to join a small, talented, and hardworking Linux team in a hybrid cloud environment. This team creates,... ...architectures. The ideal candidate will have hands-on Linux administration and scripting automation experience with knowledge of AWS Cloud...Full time- ...safety and security. Make an impact by using your expertise to protect our country from threats. Job Description SYSTEMS ADMINISTRATOR SME – LINUX Grow your impact. Grow your career. At GDIT, you’re not just maintaining systems — you’re supporting a mission...Long term contractContract workWork from homeRelocation packageFlexible hours
$155k - $255k
...Description Description: DarkStar Intelligence is seeking a System Administrator Level 2 to support the implementation, troubleshooting, and... ..., planning, installing, configuring, and sustaining Red Hat Linux (RHEL) environments Extensive experience using UNIX/Linux...Local area$150k - $190k
...Summary CTC Group has a new and exciting opportunity for Linux Systems Administrators to maintain and secure Linux-based systems, support Cisco and Palo Alto network infrastructure, automate system administration tasks using Ansible, Bash, and Python, and perform...Full time$120k - $157.5k
...voted Baltimore Business Journal's (BBJ) Best Places to Work 2026! Belay Technologies is seeking a System Administrator (SA) to join our Intel team. The SA will provide Linux systems administration and operational support for mission-critical environments, including...Full timeContract workWork experience placementFlexible hours- ...unable to 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
$75.2k - $158.1k
Linux Systems Administrator At CACI - Our mission is to get data to those who need it 24x7x365. This contract provides world-wide, enterprise-scaled corporate data transport and messaging services that are highly available, reliable, and fault tolerant. This position provides...Contract workWork experience placementFlexible hours$101k - $129k
Systems Administrator, Bulk Data Transport Operations Make an Impact Where It Matters Most At Intelliforce, we support mission infrastructure... ...enterprise partners. This is a strong fit for someone who enjoys Linux, operational support, and keeping high-availability systems...For contractorsImmediate startWorldwideVisa sponsorship- ...Telework: None Basic Requirements: ~20 years experience as a system engineer ~ Bachelor’s degree in a technical discipline ~5... ...Job Description: Administer, configure, and maintain Linux operating systems to ensure high performance and reliability. Responsible...SeniorFull timeImmediate startRemote work
$86.54 - $110.58 per hour
Job Title Linux Systems Administrator Overview EverWatch is a government solutions company providing advanced defense, intelligence, and deployed support to our country's most critical missions. We are a full-service government solutions company. Harnessing the most advanced...Hourly payContract workLocal area$112k - $179k
Linux Systems Administrator IV Peraton is seeking a Linux Systems Administrator IV to join our team supporting a mission-critical Intelligence Community... ...that directly support national security operations. As a senior systems administrator, you will be responsible for...Contract workFor contractorsImmediate startShift work$145k - $165k
...Job Description Job Description Overview Senior Linux Systems Administrator LOCATION: Columbia, MD (Onsite) JOB STATUS: Full-time CLEARANCE: Active Top Secret / TS/SCI (Required) TRAVEL: Less than 10% SALARY RANGE: $145k - $165k Astrion has...SeniorFull timeMonday to Friday- ...powers unprecedented mission-critical analysis, scientific discovery, and scalable national security outcomes. As a Senior Linux System Administrator on this program, you will help deliver enhanced HPC capabilities across multi-vendor HPC servers, HPC clusters, and...SeniorContract workTemporary workLocal areaImmediate start
$180k - $265k
...maintenance of Information Technology (IT) systems. Provides support to IT systems... ...resolution process. Configures and manages LINUX operating systems and installs/loads operating... ...) 9 years or more experience as a Linux Administrator 9 years of experience of bash...SeniorHourly payContract workFor contractorsWork at officeMonday to Friday- Requires a minimum TS/SCI CI PolySenior Linux/Network AdministratorJob SummaryThe selected candidate will be responsible for performing daily system administration and O&M support activities in support of a complex network environment with geographically distributed systems...Senior
$151k - $170k
...*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...Senior
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