System Administrator, Senior
$77.6k - $176kBooz Allen Hamilton
System Administrator, SeniorThe Opportunity:Your technical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve a critical technology supporting the Department of Defense (DoD)? We're looking for a System Administrator 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 Administrator on our project, you'll constantly look for ways to make the infrastructure better using the latest technology and the best implementation strategies. You'll recommend technologies and approaches to improve platform performance and security, comply with security controls, and achieve system availability and reliability requirements. You'll provide your customers insight into their network through monitoring and performance management. Your technical expertise will be vital as you identify problem areas and opportunities for improvement in a mission critical network. You'll help your team better understand the network by turning metrics into information and explaining their meaning. We focus on growing as a team, so you'll share your expertise through leadership and mentoring as you help the team work through challenges and develop new methodologies.As a technical leader, you'll identify new opportunities to modernize the network to help your customers meet their needs. Join our team and solve daily challenges as we improve enterprise cross domain services for our clients.Join us. The world can't wait.You Have:3+ years of experience with Red Hat Enterprise Linux or Rocky3+ years of experience with ProxmoxExperience with GitExperience managing systems using Infrastructure as Code technologies, including Salt, Ansible, Puppet, PowerShell, Chef, or TerraformKnowledge of Linux firewalls, Linux RPMs, networking configuration, and DNSTS/SCI clearance with a polygraphBachelor's degree in a CS or IT field and 5+ years of experience with systems or network administration, or 10+ years of experience with systems or network administration in lieu of degreeAbility to obtain a DoD 8570.1 IAT Level II Compliant Certification within 60 days of start dateNice If You Have:Experience with AWSExperience with virtual infrastructure migrationsExperience with PythonKnowledge of bi-directional network transfer systemsDoD 8570.1 IAT Level II Compliant CertificationCompensationAt Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page.Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $77,600.00 to $176,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees.Work Model Our people-first culture prioritizes the benefits of collaboration, whether it occurs in person or virtually. To support engagement and effective communication, employees working virtually are generally expected to have their cameras on during meetings.Remote: If this position is listed as remote, there may still be occasions when you are required to work in person at a Booz Allen or customer facility.Hybrid: If this position is listed as hybrid, you will be expected to work from a Booz Allen facility frequently, in alignment with leadership expectations and the needs of the role. You may also be required to work from or visit a customer facility.Onsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.
- ...Job TitleYou will work on a 7–9-person mixed Contractor/Civilian SA team supporting 3rd party systems.All supported systems are Linux hard boxes or VM's.You will come in look at your monitoring, catch up on emails and your team Skype chat room for mission critical updates...SeniorFor contractors
- ...development networks.Core Tasks:Conduct functional and connectivity testing to ensure continuing operability.Develop and document systems administration standard operating procedures.Maintain baseline system security according to organizational policies.Manage accounts,...SeniorLocal area
- We are seeking an experienced Senior Systems Administrator to support the lifecycle sustainment and modernization of mission-critical education, learning, and training applications supporting a Government enterprise. This role is ideal for an experienced systems administrator...SeniorFull time
$77.6k - $176k
Job Number: R0232223 System Administrator, Senior The Opportunity Your technical expertise makes the team hero, solving one problem after another. What if you could use those skills to improve the technology supporting the Department of Defense? We're looking for a System...SeniorLocal area$168k - $250k
...information theft and augment protections for our customers systems. If you are looking to join a company that provides... ...consider joining our team! Peterson is seeking a talented Senior Systems Administrator . Provides day to day systems administration and support...Senior- ...to sponsor an employment Visa. What You’ll Be Doing (We don’t love the bullet points, but we love the work!) As the System Administrator, you'll get to be responsible for providing network management and systems administration support to maintain the Agency’s High...SeniorVisa sponsorshipWork visa
$140k - $185k
...information theft and augment protections for our customers systems. If you are looking to join a company that provides... ...consider joining our team! Peterson is seeking a talented Senior Systems Administrator . Seeking an SA to provide support for the design, planning...Senior- ...Job Description Job Description Description: The role of the System Administrator includes supporting the implementation, troubleshooting, and upkeep of Information Technology (IT) systems. This involves overseeing the IT system infrastructure and associated processes...Senior
$110k - $115k
...digital age. TDI is seeking a Virtual Desktop Infrastructure Systems Administrator to support a DISA contract. The administrator will provide... ...active TS/SCI clearance. RESPONSIBILITIES: Provide Senior level expertise for Virtual Desktop Infrastructure (VDI)...SeniorPermanent employmentContract workWorldwide- ...Job Description Job Description Job Description Vetegrity is looking for System Administrators with 15+ years if experience. This Position requires a TS/SCI with a Full Scope Polygraph. See more details below. Job Duties: - Provide support for implementation...SeniorTemporary workLocal area
- ...Job Description Job Description SECURITY CLEARANCE: TS/SCI with both Polygraphs is required POSITION: Senior Systems Administrator REQUISITION: KEY-SA3-03.080626 LOCATION: F t. Meade, Maryland JOB DESCRIPTION: (U) Provides support for implementation...Senior
$92.3k - $166.85k
...customers as they address evolving national security challenges. About the Opportunity Leidos is seeking an experienced Senior System Administrator to support the implementation, operation, troubleshooting, and maintenance of IT systems and infrastructure. You will manage...SeniorLocal areaImmediate start$114k - $160k
...has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2026! Belay Technologies seeks a Mid-Level or Senior Level System Administrator (SA) to join our intel team. The selected individual will provide system administration support for a large, complex...SeniorFull timeContract workWork experience placementFlexible hours- Bowler Pons is seeking a Systems Administrator to provide host-based systems administration and engineering support for a DoD customer's mission-critical IT infrastructure. The successful candidate will bring hands-on expertise administering, securing, and modernizing Windows...SeniorDaily paidFull time
- A technology solutions provider is seeking an experienced Systems Administrator with over 10 years of experience and a technical Bachelor’s degree to join their team. Responsibilities include providing Tier 1 & 2 Help Desk support, maintaining IT systems, and ensuring compliance...Senior
- SECON-DELTA is seeking an experienced System Administrator, Level II, in Glen Burnie, MD. The role requires an active TS/SCI clearance with full scope polygraph and Security+ certification. You will manage Red Hat Linux VMs in AWS, ensure IAVA compliance, perform routine...Senior
- ...do not apply if you do not currently possess this level of clearance. Telework: None Basic Requirements 20 years experience as a system engineer Bachelor’s degree in a technical discipline 5 additional years of experience as a system engineer may be substituted for a...SeniorFull timeImmediate startRemote work
$116.35k - $210.33k
...as they address evolving national security challenges. About the Opportunity Leidos is seeking a highly experienced Senior System/Network Administrator - Systems Integration to support the implementation, operation, troubleshooting, and maintenance of complex IT systems...Senior- ...Sr. Systems AdministratorAnnapolis Junction, MDFull-TimeWe are seeking a highly skilled and experienced Senior Systems Administrator to join our IT team. The ideal candidate will be responsible for managing, maintaining, and improving the organization's IT infrastructure...Senior
- ...McLean, VA . We currently have an immediate opening for a Sr. Systems Administrator to support our contract in Lanham, MD. Our government... ...requirement to provide support in Infrastructure Management for a Senior System Administrator, with strong Microsoft Hyper‑V...SeniorContract workWork at officeImmediate startRemote workMonday to Friday
- ...Description Vibrint is a trusted provider of mission-critical systems and analysis that transform our customers' capacity and... ..._____________________________________ We are seeking a Senior System Administrator for a funded role with quantifiable Linux system...SeniorTemporary workWork experience placementLocal areaImmediate start
$120k - $130k
...support Within the last 7 years, at least 5 of the years of experience must have been with modern digital/optical telecommunications systems and protocols, telephony switching system networks, and/or internet communications Job Description: Come join a dynamic, fast...SeniorFull timeImmediate startRemote workFlexible hoursShift workDay shiftAfternoon shift$120k - $200k
...Description Are you looking for the opportunity to utilize your IT Systems and Network experience and be part of a growing and innovative... ...and hardware are functioning at peak performance. System Administrator Job Description: Provides support for implementation,...SeniorWork experience placement$112k - $179k
Senior Infrastructure and Systems Administrator Job Locations US-MD-College Park Requisition ID 2026-166562 Position Category Cyber Security Clearance Top Secret/SCI w/Poly Responsibilities Peraton Labs is seeking a poly cleared Senior Infrastructure and Systems...SeniorFull timeContract workFor subcontractorRemote workRelocation packageShift work- ...Job Description Job Description Senior HPC Systems Administrator Omega Enterprise Solutions is a Maryland-based, Service-Disabled Veteran-Owned Small Business (SDVOSB) with a special focus on the U.S. Department of Defense (DoD) and Intelligence Community (IC...SeniorFull time
$114k - $190k
...21! Belay Technologies is seeking a System Admin to join our intel team. The selected individual will provide system administration support for a large, complex network environment... ...last 6 years ~ Preferred Level: Mid or Senior ~ Clearance Requirement: FS poly...SeniorFull timeContract workWork experience placementFlexible hours- ...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
- Acuity, Inc. is hiring a Systems Administrator to support federal agency missions in IT Modernization, Data Enablement, and Hyperautomation. The role focuses on Windows Server administration, SQL Server, SCCM, and cloud services. The candidate will manage full system lifecycle...Senior
$180k - $230k
...Sr. Systems Administrator Summary Join a fast-paced team supporting a large, complex enterprise IT environment with geographically distributed and highly secure systems. This role provides hands-on system administration, troubleshooting, security, and infrastructure...SeniorFor contractorsCurrently hiringLocal areaImmediate startFlexible hours$89.2k - $220.48k
...passionate about what they do, committed to our shared values and dedicated to our customers’ mission. AT&T has an opening for a Senior System Administrator to support operations by maintaining, documenting, and administering enterprise IT systems. This role is the Senior...SeniorTemporary workWork at officeLocal area
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