Senior System Administrator
Peraton
Individual Capabilities/Experience Required Bachelor’s degree in a technical discipline from an accredited college or university and ten(10) years’ experience as a SA in programs and contracts of similar scope, type and complexity is required. Five (5) years of additional SA experience may be substituted for a bachelor’s degree. DoD 8570 compliance with Information Assurance Management (IAM) Level I or higher is required. Additional Domain Experience: Computer Network Operations – Must have at least two (2) years of demonstrated experience in modern operating systems and network architectures. Information Assurance – Must have at least two (2) years of demonstrated experience in certification and accreditation, architecture development and design, risk assessments, and IA metrics gathering. Ability to work independently and in groups to complete tasks bounded by constraints. Experience with Linux. Experience with Splunk. Ability to break down complex problem space, formulate technical strategies, build action plans, and track progress against established baselines to resolve technical challenges and meet customer expectations. Position requires TS/SCI clearance with polygraph. Individual Capabilities/Experience Desired Strong writing and communication skills. Benefits Peraton offers enhanced benefits to employees working on this critical National Security program, which include heavily subsidized employee benefits coverage for you and your dependents, 25 days of PTO accrued annually up to a generous PTO cap and eligibility to participate in an attractive bonus plan. Responsibilities We are seeking a Senior System Administrator to provide enterprise-focused engineering support to a Government Customer. You will provide system administration solutions to meet required capabilities, and you will create bills of materials, network designs and diagrams, and other documentation for new and updated installations. You will also work with network, storage, and server personnel to define new or modified solutions to complex problems; respond to requests for new systems to meet capacity and user requirements; and determine required power, space, cooling, and funding to meet these goals. #J-18808-Ljbffr Peraton
- ...System Administrator Vetegrity is looking for System Administrators with 15+ years of experience. This position requires a TS/SCI with a full scope polygraph. See more details below. Job Duties - Provide support for implementation, troubleshooting, and maintenance...Senior
- ...Senior System Administrator Be a member of a system administration team responsible for the design, deployment, installation, configuration and maintenance of Linux/UNIX-based server systems and software. Be able to learn quickly and work independently as well as collaborate...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
- ...SITEC is seeking a Senior Systems Administrator to support lifecycle sustainment activities for commercial and custom-developed education, learning, and training applications. This role will join an existing technical team responsible for maintaining secure, reliable...Senior
$163k - $173k
...Tensley Consulting is seeking an experienced System Administrator to support for implementation, troubleshooting and maintenance of Information Technology (IT) systems. Manages IT system infrastructure and any processes related to these systems. About the Role Provides...Senior- ...Configure, manage and troubleshoot Linux and Windows operating systems.Installs/loads operating system software, troubleshoot and... ...configurationmanagementand patching. Red Hat Certified System Administration Certification. Experience withNetAPP(backing up for VMs, Linux...SeniorWork at office
- ...person mixed Contractor/Civilian SA team supporting 3rd party systems. • All supported systems are Linux hard boxes or VM's. •... ...and home directories. Required Skills: • LINUX Administration • Solid experience with STE/STN, DISA STIG compliance work...SeniorFor contractors
- ...Worker Type: Regular Job Description Summary The System Administrator III is a senior technical contributor responsible for designing, implementing, securing, and maintaining the organization’s core IT infrastructure. This role provides Tier 3 support for complex incidents...SeniorPermanent employmentContract workWork experience placement
$190k - $210k
...Location: Annapolis Junction, Maryland Type: Contract Job #3710 Title: Senior System Administrator Location: Annapolis Junction, MD Compensation Range: $190 -$210K *Clearance: *Active TS/SCI w/ Polygraph needed to apply * Company Overview...SeniorContract workLocal area$96.2k - $192.3k
Accenture Federal Services in Annapolis Junction, MD is looking for an experienced Systems Administrator. The ideal candidate will provide support for IT systems, manage infrastructure, and troubleshoot issues. A minimum of ten years of experience in similar roles as well...Senior- Prodigy One, LLC. is seeking a System Administrator to support a large, complex network environment with distributed systems. The role involves installing applications, maintaining server configurations, and ensuring security posture across air‑gapped environments. Strong...Senior
- Metrea in the United States is seeking a Classified Systems Administrator to secure and maintain air-gapped IT infrastructure used by the IC and DoD. You will lead a mixed Linux/Windows environment with a strong ownership mentality. Responsibilities cover security hardening...Senior
- CTI MD in Maryland seeks an experienced Systems Administrator to support federal contract requirements. You will maintain Windows Server and Active Directory, manage virtualization, and work with SALT, Ansible, Splunk, Puppet, and Nessus in a secure environment. The position...SeniorContract work
- Navstar Inc. is seeking a senior System Administrator to support a large, complex network environment across distributed systems. The role emphasizes safeguarding information, configuring servers, and maintaining security controls while collaborating with developers, testers...Senior
$170k - $175k
A leading technology consulting firm is seeking a Senior System Administrator with an active TS/SCI clearance and polygraph. The role involves implementing and maintaining IT systems, providing Tier 1 and Tier 2 support, and managing daily operations across various environments...Senior- LVMH Group is seeking a Senior Systems Administrator for the Planning and Engineering Department in Maryland. The successful candidate will support the DC network, maintain production systems, and utilize their extensive knowledge in logistics processes. Key responsibilities...Senior
- Cornerstone Defense LLC is seeking an Expert System Administrator in Annapolis Junction, MD. Candidates must have an active TS/SCI clearance and a minimum of 15 years of experience in system administration. The role entails supporting the implementation and maintenance...Senior
- Constellation Technologies, Inc. is seeking a seasoned Systems Administrator in Maryland to support federal contract requirements. You will manage Windows Server 2019, Active Directory, virtualization and security best practices while collaborating with developers, testers...SeniorContract work
- Columbia Technology Partners is seeking System Administrators to support the implementation, maintenance, troubleshooting, and optimization of mission-critical IT systems and infrastructure. The ideal candidate will provide operational support across servers, storage, networks...Senior
- Belay Technologies, Inc. is seeking a System Administrator to join our intel team in Maryland. The role provides system administration support for a large, complex, distributed network, with air-gapped environments and multiple domains. The candidate will work in a fast...Senior
- Innovative Systems & Solutions in Annapolis Junction, MD is seeking a Senior System Administrator to support DoD IT infrastructure. The role requires TS/SCI clearance with polygraph and 10+ years of SA experience, managing UNIX and Windows environments. You will provide...Senior
- Innovative Systems & Solutions (ISSI) is seeking a Senior System Administrator (TS/SCI with Polygraph) in Annapolis Junction, Maryland. The role focuses on implementing, troubleshooting, and maintaining IT systems across client, server, storage, and network environments...Senior
- Innovative Systems & Solutions in Annapolis Junction, MD, is seeking a Senior System Administrator to support IT systems across client/server/storage/network environments for DoD and Federal customers. The role includes handling Tier 1/2 support, system maintenance, and...Senior
- General Dynamics Information Technology (GDIT) is seeking an Active Directory Systems Administrator to manage enterprise virtualization and secure compute environments onsite in Maryland. The role focuses on Windows/Linux server administration, vCenter operations, patching...Senior
- Cornerstone Defense is seeking a Senior System Administrator to support secure enclave development networks in Annapolis Junction, MD. The role focuses on maintaining operability, implementing SOPs, and enforcing security baselines across Windows and Linux servers with...Senior
- Power3 is looking for a System Administrator III in Annapolis Junction, MD. The candidate will provide support for implementation, troubleshooting, and maintenance of IT systems while managing system infrastructure. Responsibilities include Tier 1 and Tier 2 problem resolution...Senior
- A national security technology provider is seeking an experienced systems administrator in Maryland. The role involves implementing and managing research infrastructure systems, performing system administration tasks, and supporting customer operations. Candidates should...Senior
- Erias Ventures, LLC seeks engineers to support IT systems, troubleshoot, and maintain infrastructure across UNIX/Windows servers and storage environments. The role emphasizes secure, scalable IT operations and proactive problem-solving in a growth-oriented company. The...Senior
$115k - $175k
...of a small company with the impact of a big mission. Riverstone is seeking a motivated, career, and customer-oriented Senior Systems Administrator to join our team at Annapolis Junction, Maryland . This is an onsite position. Primary Responsibilities Provides support...SeniorHourly payContract workWork experience placement- Innovative Systems & Solutions | Full time - Onsite Senior System Administrator - FFNN-8807 Annapolis Junction, United States | Posted on 03/17/2026 Innovative Systems & Solutions (ISS) works with a wide spectrum of talent to establish an atmosphere that stimulates creativity...SeniorFull timeTemporary workLocal areaImmediate start
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior System Administrator. Be the first to apply!
- entry-level systems administrator Annapolis, MD
- remote systems administrator Annapolis, MD
- computer systems administrator Annapolis, MD
- application system administrator Annapolis, MD
- hpc system administrator Annapolis, MD
- IT infrastructure administrator Annapolis, MD
- microsoft systems administrator Annapolis, MD
- enterprise administrator Annapolis, MD
- junior systems administrator Annapolis, MD
- systems administrator Annapolis, MD

