System Administrator, Senior
$77.6k - $176kBooz Allen Hamilton
Job Number: R0246277 System Administrator, Senior The 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 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 Rocky 3+ years of experience with Proxmox Experience with Git Experience managing systems using Infrastructure-as-Code technologies, including Salt, Ansible, Puppet, PowerShell, Chef, or Terraform Knowledge of Linux firewalls, Linux RPMs, networking configuration, and DNS TS/SCI clearance with a polygraph Bachelor’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 degree Ability to obtain a DoD 8570.1 IAT Level II Compliant Certification within 60 days of start date Nice If You Have: Experience with AWS Experience with virtual infrastructure migrations Experience with Python Knowledge of bi-directional network transfer systems DoD 8570.1 IAT Level II Compliant Certification Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance with polygraph is required. Compensation At 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. This posting will close within 90 days from the Posting Date. Identity Statement As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud. Candidate AI Usage Policy AI is a part of our daily work at Booz Allen, and we are committed to the responsible and ethical use of AI tools. However, we want to ensure a fair candidate process based on your own skills and knowledge. As part of this commitment, the use of artificial intelligence (AI) or other tools to assist with responses during interviews (whether in-person or virtual) is prohibited unless permission is explicitly provided . Work Model 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-Discrimination All 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. #J-18808-Ljbffr Booz Allen Hamilton
- ...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
- ...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
$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$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$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 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
$110k - $140k
We open closed systems. It's not just a slogan - it's our focus. We specialize in unraveling the complexities of IT systems to broaden... ...for our customers. Render is searching for a System Administrator to join a dynamic in-person team in a lab environment supporting...SeniorFull timeLocal area$114k - $164k
...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 network...SeniorContract workWork experience placementFlexible hours- Job Description Senior System Administrator (TS/SCI with Polygraph) Location: Annapolis Junction, Maryland Innovative System Solutions (ISSI) is seeking a Senior System Administrator with an active TS/SCI clearance with polygraph . This is an exciting opportunity for...SeniorTemporary workLocal area
$125k - $155k
Senior Systems Administrator The Senior Systems Administrator is expected to be able to accomplish the following: Monitors and manages system resources, including CPU usage, disk usage, and response times to maintain operating efficiency. Performs systems security administration...SeniorContract workLocal areaShift work$164k - $200k
Belay Technologies is seeking a Senior System Administrator to join our intel team. Join a team providing Life Cycle Sustainment (LCS) and modernization activities for commercial and custom-developed education, learning, and training applications supporting the Government...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$164k - $200k
Belay Technologies is seeking a Senior System Administrator to join our intel team. You will support CNO Capabilities as a senior System Administrator and technical contributor responsible for sustaining and evolving a high-performance operational IT environment. This is...SeniorContract workWork at officeRelocation$146.67k - $249.33k
Senior Systems Administrator Elevate Your Expertise in a High-Impact Environment Join a team where technical precision meets mission-critical execution. We are seeking a Senior Systems Administrator to take ownership of a sophisticated, geographically distributed network...SeniorFull timeLocal area$170k - $220k
Worker Type Regular Job Description Summary The primary role of the System Administrator is to manage and support mission-critical IT infrastructure. This role involves day-to-day operations, troubleshooting, and maintenance across Windows and UNIX systems. You'll work...SeniorPermanent employmentContract workWork experience placementLocal area- ...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- Senior Systems Administrator We are hiring a Senior Systems Administrator to support mission-critical applications in a secure environment. This is an opportunity for an experienced systems professional with strong Linux administration expertise to work across modern and...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- Sr. Systems Administrator 2HB Incorporated is seeking a Sr. Systems Administrator in order to support its government customer in Annapolis Junction, MD. This is a full-time position, and requires a TS/SCI/Full Scope Polygraph Clearance. 2HB is seeking a candidate who shall...SeniorFull time
- ...proud to offer career growth opportunities and a competitive compensation and benefits package. Visit our website at: Senior System Administrator Candidate must have an active TS/SCI w/Poly For over 40 years, DCCA has provided a broad range of IT services to government...SeniorFlexible hours
- ...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
- ...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
$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- Bering-Alaka`ina Holdings, LLC has a potential need for a Sr. System Administrator to provide support for our government customer in Laurel, MD at Ft. Meade. *** POSITION IS CONTINGENT UPON CONTRACT AWARD.*** DESCRIPTION OF RESPONSIBILITIES: Responsible for high-level,...SeniorContract work
$146k - $234k
ResponsibilitiesMid-level Network / Desktop Administrator to support and maintain enterprise network and end-user computing infrastructure... ...and remediate vulnerabilities in response to IAVAs, ensuring systems remain compliant with security baselines and STIGs.Use CLI and...SeniorContract workRemote workShift work$77.6k - $176k
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...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work- ...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
- Sr. Systems Administrator Annapolis Junction, MD Full-Time Cool We 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...SeniorFull time
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