Senior Systems Administrator - COMSEC Specialist
$150k - $200kModern Technology Solution, Inc (MTSI)
MTSI is seeking a Senior Systems Administrator - COMSEC Specialist whose primary function will be to lead/support development, testing and integration of advanced communication systems. This position will be located in the Washington DC area.Your essential job functions will include but may not be limited to:Lead/monitor the design and implement a network architecture to support mission critical needs for the development of advanced systems.Monitor and guide the development of requirements, conduct independent reviews and make recommendations.This role will include COMSEC custodian responsibilities to lead and manage a large crypto shop and network.Coordinate infrastructure requirements (logical addressing/routing/firewall modifications) for secure communications.Evaluate the threats and vulnerabilities to information systems to ensure security controls effectively mitigate the risk of exploits.Provide a comprehensive network design, setup and support of all server/client systems and applications for a Windows environment.Required Qualifications:10+ years' of related technical experience.Experience in satellite communications and/or aircraft communications subsystems development, integration and testing.Experience as a team leader or manager of communication subsystems during development and/or production with responsibility for test, technical documentation and system evaluation.Minimum Educational Requirements:Bachelors Degree in a related field.Clearance Requirements:Top Secret, SCI Eligible; SAP experience within last 5 years or SCI in lieu of.The pay range for this position is $150,000/year to $200,000/year; however, base pay offered may vary depending on established government contract ranges, job-related knowledge, skills, and experience, and other factors. MTSI offers a full range of medical benefits, 401k, ESOP, paid time off, and other benefits, dependent on the position offered. Base pay information is based on market location. Applications will be accepted on an ongoing basis. This posting will be renewed periodically until the position is filled.#mtsi#LI-LS1#LI-Onsite
- ...to protect our country from threats. Job Description Systems Administrator Maintains an organization's computer systems' workflows... ...backup technologies - knowledge of communication security (COMSEC) integration is a plus. Must be familiar with security policy...SeniorWork at officeLocal areaRemote work
$92.3k - $166.85k
...Community customers as they address evolving national security challenges.About the OpportunityLeidos is seeking an experienced Senior System Administrator to support the implementation, operation, troubleshooting, and maintenance of IT systems and infrastructure. You will...SeniorFull time$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$125k - $190k
...drive lasting value. ResponsibilitiesLMI is seeking a skilled COMSEC Specialist to manage communications security material, equipment, and... ...Experience supporting Special Access Program (SAP) facilities, systems, or environments. Nice to Have: Formal COMSEC Custodian training...SuggestedFull time- ...Qualifications Minimum of seven (7) years of experience in installing, configuring and maintaining UNIX/LINUX/MS operating systems and Cloud Environment. Analyzes and resolves problems associated with the operating system's servers, hardware, applications,...Senior
$116.35k - $210.33k
...customers as they address evolving national security challenges.About the OpportunityLeidos is seeking a highly experienced Senior System/Network Administrator - Systems Integration to support the implementation, operation, troubleshooting, and maintenance of complex IT...SeniorFull time- ...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
$97k - $140k
...Atlassian Administrator (Cloud) Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software, V-BAT and X-BAT aircraft, and Aechelon simulation...SeniorFull timeTemporary workPart timeWorldwide$78.6k - $160.2k
...Senior Systems Administrator At Accenture Federal Services, nothing matters more than helping the US federal government make the nation stronger and safer and life better for people. Our 13,000+ people are united in a shared purpose to pursue the limitless potential...SeniorLocal area- ...Senior Systems Administrator II Employment Type: Full Time, Senior-level CGS is seeking a Senior Systems Administrator to join our team... ...Relativity Certified Administrator or Relativity Infrastructure Specialist Certificate Our commitment: Contact Government...SeniorFull timeContract workFor contractorsWork at officeFlexible hours
$102.75k
Agency: SenateDepartment: Legislative BranchSalary: Starting at $102,745 Per year (AD 00)Dates: Open 09/03/2026 to 09/17/2026Schedule: Full-timeWork type: PermanentRelocation: FalsePosition ID: req1082Document ID: 883525800Grade: AD 00Job category: Information Technology...Senior$101.92k - $131.04k
...Senior Systems Administrator Employment Type: Full Time, Senior-level Department: Legal/IT CGS is seeking a Senior Systems Administrator... ...Certified Administrator or Relativity Infrastructure Specialist Certificate Our commitment: Contact Government...SeniorFull timeContract workFor contractorsWork at officeFlexible hours$78.6k - $160.2k
...and more. Join us to drive positive, lasting change that moves missions and the government forward! You Are: The Senior Systems Administrator, oversees the management, security, and optimization of a mixed Windows and RedHat Linux environment hosted in AWS....SeniorLive inWork at officeLocal area$130k - $180k
Celestar Corporation, seeking a Database/Web System Administrator, supports the DARPA PSS program in Arlington, VA. Salary range $130,000-$180,000/year with compensation based on experience, certifications, security clearance, and funding. Active TS/SCI clearance required...Senior- Sienna Systems Corporation is seeking a Cloud Systems Administrator to join the SSA Special Notice Option (SNO) team in Alexandria, Virginia. You will own AWS and Active Directory environments end-to-end on a small, self-directed team. You will work on-site with government...Senior
$158.31k
...-timeWork type: PermanentRelocation: FalsePosition ID: 2026-DOF-B0283Document ID: 883710300Grade: CG 14Job category: Financial Administration And Program (0501)Hiring path: fed-competitive, fed-transition, land, vet, mspouse, disability, overseas, peace, special-authoritiesSeniorOverseas- ...experience utilizing Figma and Angular to build and design UI/UX.Responsible for installing, configuring, and maintaining operating system workstations and servers, including web servers, in support of business processing requirements.Performs software installations...Senior
- Title: Senior Cisco Systems AdministratorLocation: RemoteClearance: Secret Responsibilities:Perform daily administration and monitoring of Cisco UCS domains, fabric interconnects, chassis, and blade serversManage, maintain, and upgrade VMware vSphere, vCenter, and VMware...SeniorFull time
- ...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
- We’re looking for a Senior Systems Administrator to support mission-critical applications and infrastructure for the DIA. This is a hands‑on Linux administration role where deep experience supporting enterprise systems will be especially valuable. Oracle experience is...SeniorFull time
$94.62k - $127.25k
...require proven experience in DNS administration and architecture, including... ...ability to maintain system continuity through updates,... ...Responsibilities: We serve as the senior Identity and Access... ...System Administration - Senior/Specialist position within our Information...SeniorPermanent employmentFull timeWork at officeRemote workFlexible 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
- ...paid holidays a year, including 2 personal holidays ~ Reimbursement for professional licensure Job Summary The Senior Systems Administrator ensures the reliability, performance, and security of our Windows infrastructure—both on-premises and in Azure. This...Senior
$130k - $140k
...we’ve described you and your dream workplace, please apply and share in the many benefits and opportunities we offer. Senior Systems Administrator Seven (7) years of progressive experience in the field of Information Processing, six of which are specialized in numerous...SeniorFor contractors- Senior Systems Administrator - Security Clearance Duration: Full time, salaried opportunity Government Security Clearance Requirements: Government security clearance required. TS/SCI. Must possess active clearance. Security+ certification required. Description : The...SeniorFull time
- ...safety and security. Make an impact by using your expertise to protect our country from threats. Job Description SYSTEMS ADMINISTRATOR SENIOR Advance how our customers operate while you advance your career. Join GDIT as a Systems Administrator Senior and...Senior
- ...This is a great opportunity for a skilled, highly motivated Systems Administrator to come in on the ground floor. We are a very small team,... ...tasks typically done, in larger organizations, by different specialists The opportunity to participate in all aspects of the development...SeniorContract workRemote workHome officeFlexible hours
$135k - $182.1k
...technology leaders, architects, developers, and business partners.Communicate status, risks, dependencies, and recommendations to senior stakeholders.Influence teams to align around enterprise security objectives, adoption priorities, and delivery timelines.Required Qualifications...SeniorFull timeWork at officeFlexible hoursShift workDay shift- Join to apply for the Senior Systems Administrator role at Tecolote Research Overview We are seeking a skilled and motivated Systems Administrator to join our IT team. The ideal candidate will be responsible for managing, maintaining, and optimizing our enterprise systems...SeniorFull timeTemporary workWork at office
- Position Overview JDEIS databases and systems must stay current, backed up, and available to support doctrine and education work. The Senior Systems Administrator provides database and systems administration across JDEIS applications, including backups after major updates...SeniorTemporary workFlexible hours
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