Windows & Linux Systems Administrator Staff
$118k - $219.1kLockheed Martin Corporation
Cyber Security ProfessionalLockheed Martin, Cyber & Intelligence invites you to step up to one of today's most daunting challenges: the evolving threat of cyber warfare. As a cyber security professional at Lockheed Martin, you'll protect the networks that our citizens and the world depend upon each minute. Here, you'll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you'll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay.The GG System Administrator is a senior level role that blends enterprise system administration (Linux & Windows) with full cycle network engineering, including design, deployment, and support of Arista as well as other vendor platforms. The incumbent will drive automation, security, and DevOps best practices while delivering resilient, high performance infrastructure for mission critical workload.System Administration:Install, configure, and maintain RHEL/CentOS/Ubuntu/Debian servers and Windows Server 2016/2019/2022 instances.Manage users, groups, Active Directory, and local security principals.Provision and manage storage (partitioning, LVM, RAID, SMB/NFS shares).Perform system hardening, patching, and vulnerability remediation in accordance with DoD STIG/CIS baselines.Monitor performance, tune kernel/OS parameters, and troubleshoot services.Automation and Scripting:Develop and maintain Ansible playbooks and roles to automate both Linux and Windows workloads (use of WinRM modules).Write Bash, PowerShell, and Python scripts for routine tasks, incident response, and reporting.Operate Ansible Tower/AWX for job scheduling, credential management, and audit trails.Integrate Git version control workflows for infrastructure as code (IaC).Network Engineering:Design, implement, and troubleshoot enterprise L2/L3 networks (VLANs, routing protocols, QoS, DHCP, DNS).Arista Specific: Configure Arista EOS switches, leverage CloudVision for centralized provisioning, and automate via eAPI/Ansible modules.Conduct capacity planning, high availability design, and performance tuning (BGP, OSPF, EVPN, VXLAN).Implement security controls (ACLs, RADIUS/TACACS+, 802.1X, MACsec) and ensure compliance with DoD requirements.Security & Compliance:Enforce DoD 8570 IAT 2 standards; apply DISA STIGs and CIS Benchmarks across hosts and network devices.Manage secrets, certificates, and role based access controls (RBAC) for both servers and switches.Perform regular audits, vulnerability scans, and remediation tracking.Collaboration & Communication:Translate technical concepts into clear business value for stakeholders.Provide Tier 3 support and knowledge transfer to Tier 1/2 service teams.Document designs, runbooks, and SOPs in Confluence/SharePoint and maintain configuration libraries in Git.Basic Qualifications:Bachelors degree from an accredited college in a related discipline, or equivalent experience/combined education, with ten (10) years or more of professional experience. An additional five (5) years of experience can be substituted for a degree.Considered an expert, authority in discipline.DOD 8570 certification to meet IAT Level 2 requirements.Possess all capabilities as defined by the GG Statement of work (SOW) Appendix B for the USG standard SA labor category level X.***You must possess the requisite security clearance and polygraphs to apply to this position***Desired Skills:Container Orchestration: Experience with container orchestration tools such as Docker Swarm, Kubernetes, or Apache Mesos.Understanding of container networking, service discovery, and load balancing.Cloud Native Technologies: Familiarity with cloud-native technologies such as cloud providers (AWS, Azure, GCP), container registries (Docker Hub, Google Container Registry), and cloud-based logging and monitoring tools (e.g., ELK Stack, Prometheus).Monitoring and Logging: Experience with monitoring tools such as Nagios, Prometheus, or Grafana. Knowledge of logging tools such as ELK Stack, Splunk, or Logstash.CI/CD Pipelines: Experience with CI/CD tools such as Jenkins, GitLab CI/CD, or CircleCI. Understanding of pipeline automation, testing, and deployment.Networking and Storage: Experience with networking protocols (e.g., TCP/IP, and storage solutions (e.g., SAN, NAS, Ceph).Desired Certifications:RHCE (Red Hat Certified Engineer)RHCSA (Red Hat Certified System Administrator)LFCS (Linux Foundation Certified System Administrator)CKAD (Certified Kubernetes Application Developer)CKA (Certified Kubernetes Administrator)Pay Information:Full-Time Salary Range: $118000.00 - $219100.00 At Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow—both professionally and personally. The salary range for this position is as listed on the requisition. Please note that the salary information listed is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market(work location) and business considerations when extending an offer. Benefits offered: Medical, Dental, Vision, Flexible work arrangements and schedules (e.g., 4x10), 401(k) match, Paid time off, Holidays, Parental Leave, EAP, Flexible Spending Accounts, Education Assistance, Life Insurance, Short-Term Disability, and Long-Term Disability. * Annual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics. * For (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year.
$148.3k - $266.9k
...looking for a talented and fully cleared Systems Administrator to join our growing team! This role is... ...and analysts as a one-stop-shop for Linux systems administration.What You'll Be Doing... ...Linux systems. Experience with Windows to support Microsoft PowerBI is also very...SuggestedFull timeFlexible hours- General information Job Posting Title Windows / Linux System Administrator Date Thursday, April 16, 2026 City Annapolis Junction State MD Country United States Working time Full-time Description & Requirements Maximus is seeking...SuggestedMinimum wageFull timeContract workTemporary workWork experience placement
$154k - $189k
...troubleshooting and maintenance of Information Technology (IT) systems. Manages IT system infrastructure and any processes related... ...involved in the resolution process. Configures and manages Linux, Unix, and Windows operating systems and installs/loads operating system...SuggestedFlexible hours$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...Suggested$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...Suggested$116.35k - $210.33k
Senior Windows System Administrator; requires TS/SCI Polygraph up front.Leidos has a new and exciting opportunity... ...of VMware server hosts, Windows and Linux guest servers, and Virtual Desktop... ...are boundless. We challenge our staff with interesting assignments that allow...Full timeImmediate startFlexible hours$95k - $145k
SMX is seeking a Linux System Administrator to support an embedded lab environment at NAS Patuxent River. This role provides direct hands-on support for hardware, operating systems, and applications within an embedded environment. The Linux System Administrator will ensure...Contract workWork experience placementH1b- ...Capabilities, Enthusiasm, and Team Focus.New Opportunity for a LINUX System Administrator - TS/SCI Poly.Job Responsibilities:Key Responsibilities:... ...as they arrive. Heterogeneous environment so knowledge of Windows, VMware and Networking a plus. WHAT YOU’LL NEED: Current...
$123.4k - $185k
...opportunities to work on revolutionary systems that impact people's lives around... ...Computer Systems Analyst (Windows and VMWare Sys Admin) to support... ...certification, and 7 years of Windows server administration experience to include VMWare, Linux, RedHat Administration in a...Full timeRemote workRelocationFlexible hoursShift workWeekend work$92.3k - $166.85k
...Intelligence Community customers as they address evolving national security challenges.About the OpportunityLeidos is seeking a Linux Systems Administrator - Quality Assurance to support Linux-based environments that enable mission-critical testing, validation, and operational...Full time$116.35k - $210.33k
Linux Systems Administrators / Engineers are needed across several Leidos prime programs in our Intelligence Sector’s Cyber & Analytics Business... ...DirectoryPKI, TLS, and cryptographic technologiesMixed Linux/Windows environmentsExperience LevelsLevel 0: Bachelor's degree...Full timeImmediate startRelocation packageFlexible hours$87.6k - $146k
SMX is looking for a highly motivated Linux Systems Administrator with demonstrated experience performing System Administration functions on Aircraft... ...environment is requiredFamiliarity with the following: Windows ServerVMware/vSphere...Contract workWork experience placementInterim roleH1bLocal area$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...Full timeImmediate startFlexible hours$86k - $138k
ResponsibilitiesPeraton is seeking a Linux Systems Administrator with an active TS/SAP clearance to join our team supporting mission-critical operations. The ideal candidate will manage, maintain, and enhance secure Linux-based environments while ensuring uptime and performance...Contract workShift work$103.8k - $218.1k
Job Title: Linux System AdministratorJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: NoneEmployee... ...* * *The Opportunity:CACI is searching for a Linux System Administrator to support the FEMA Office of the Chief Information Security...Contract workWork experience placementWork at officeFlexible 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...Full timeContract workPart timeWork at officeLocal areaRemote work- ...The Johns Hopkins University Applied Physics Laboratory is seeking a Linux System Administrator to join the RF Engineering group. In this role, you will manage and secure Linux systems within classified environments. Your responsibilities will include maintaining infrastructure...
- ...Belay Technologies in Columbia, Maryland, is seeking a cleared System Administrator to manage Linux-based systems and infrastructure, automate tasks, and optimize performance across the stack. The ideal candidate has TS/SCI with polygraph, hands-on Linux experience, and...
- Computer Technologies Consultants (CTC) is seeking a Linux System Administrator to support the Intelligence Community in Laurel, MD.With offices... ...in the resolution process. Configure and manage UNIX and Windows operating systems, install and load operating system software...Full timeLocal area
- ...Windows Systems AdministratorColumbia, MDTS/SCI with Full Scope Poly Required200K- 215KRequired... ...and 15 years' experience as a System Administrator, OR High school diploma and 20 years' experience... ..., and Group PolicyFamiliarity with Linux Server AdministrationFamiliarity with...
$119.5k - $275k
Federal HPC Linux System Administrator, (Clearance required TS/SCI with Poly) On-Site, MarylandThis role has been designed as ‘’Onsite’ with an expectation... ...Service Delivery Manager, Sales, the customer, and site staff Answer customer inquiries concerning system software...Full timeWork experience placementWork at office- ...Redhat Linux Systems AdministratorFuse Engineering LLC RedHat Linux Systems Administrator Fort Meade, MDDescription• Strong Linux system administration skillsGeneral Red Hat Linux system administration, security patching, OS upgrades, troubleshooting problems, and ensuring...
$95.9k - $178.1k
...can support our mission.The Work:As a Systems Administrator you will:Provide support for implementation... .... Configures and manages UNIX and Windows operating systems and installs/loads operating... ...(TLS)• Windows 10/11 administration• Linux networking experiencePay...Full timeTemporary workWork experience placementCasual workFlexible hours- ...years of additional SA experience may be substituted for a bachelor's degree. Experience using: Tenable Nessus Manager, Linux, Trellix E-Policy Orchestrator, Windows 10/11, Server 2016/2019, Windows Active Directory group id: 10360180 N Name Hidden Sr. IC Career Agent...
$100k - $140k
...Red Alpha is looking for a Linux System Administrator to join a mission-critical software development effort in Maryland. This role involves performing system administration, monitoring system performance, and supporting overall architecture. Qualified candidates should...$50k - $85k
...Junior Windows Systems AdministratorPatuxent River, MDSMX is looking for a highly motivated Systems Administrator with demonstrated experience to maintain various IT systems. This position... ...a technical disciplineExperience with Linux operating systemsExperience...Contract workWork experience placementLocal area- ...technology company based in Ellicott City, Maryland is seeking a System Administrator Level 2 to manage and optimize enterprise IT systems. The ideal candidate will have extensive experience in Linux and Windows environments, strong troubleshooting skills, and proficiency...
- ...Hewlett Packard Enterprise is seeking a Federal HPC Linux System Administrator to provide on-site system management, daily monitoring, and optimization for mission-critical customers in Annapolis Junction, Maryland. The role requires TS/SCI with Poly clearance and US...Full timeRemote work
- ...architect, configure, and troubleshoot application servers while ensuring software installations across systems are up to date. Experience with Apache Server Administration, application deployment, and version control software is required. Familiarity with Docker and AWS...Full time
- ...Themis Insight seeks a Principal Systems Administrator (Linux) in Laurel, MD. You will lead Linux administration across OpenStack, AWS, and VMWare platforms, focusing on VM management, security, and DevOps tasks in a customer-facing environment. Ideal candidates have...
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