Senior Systems Administrator
$75k - $85kTechFlow Inc
TechFlow Inc. is an employee‑owned company delivering mission‑critical technology, engineering, and mission support services to federal government customers. We are seeking a Senior Systems Administrator to play a key role in a critical DOD program, powering the platform that securely collects, analyzes, reports, and exchanges data from Transportation Security Equipment. In this role you will administer, maintain, monitor, and optimize the enterprise IT infrastructure supporting the customer’s platform, ensuring the stability, security, and availability of mission‑critical systems through routine system administration, troubleshooting, and proactive corrective action. You will work closely with cybersecurity personnel, engineers, help desk staff, and government stakeholders to maintain a secure, high‑performing operating environment in a dynamic government setting. Hybrid Remote: (Must have the ability to attend in‑person meetings in the Northern VA/DC Metro area) Key Responsibilities Administer, maintain, and support enterprise servers, operating systems, virtual environments, and associated infrastructure. Perform routine system administration tasks, including user account management, system monitoring, patch management, backups, and performance tuning. Maintain accurate system administration logs, operational documentation, and configuration records. Monitor system health, identify performance issues, and implement corrective actions to maximize system availability and efficiency. Troubleshoot and resolve complex hardware, software, operating system, network, and application issues in high‑volume, high‑availability environments. Utilize established debugging tools, protocols, and diagnostic processes to isolate and resolve technical problems. Respond to customer‑reported incidents and service requests, providing timely resolution and effective communication throughout the support process. Collaborate with cybersecurity personnel to implement security controls, apply security patches, and maintain compliance with government security requirements. Support system upgrades, software deployments, maintenance activities, and infrastructure modernization initiatives. Assist with disaster recovery planning, backup validation, and system restoration activities. Develop and maintain technical documentation, standard operating procedures, and configuration management records. Participate in after‑hours maintenance windows and provide on‑call support as required. Compensation $75,000–$85,000 annually, commensurate with experience and qualifications. Qualifications Bachelor’s degree in Information Technology, Computer Science, Information Systems, or a related technical discipline. Minimum of 6 years of progressively responsible experience in systems administration. Experience conducting routine system administration activities and maintaining detailed system administration logs. Experience administering and troubleshooting enterprise IT infrastructure supporting high‑volume, high‑availability environments. Demonstrated ability to diagnose and resolve complex technical issues across servers, operating systems, and supporting infrastructure. Experience utilizing system debugging tools, troubleshooting methodologies, and diagnostic processes.Strong understanding of Windows and/or Linux server administration. Experience with system monitoring, patch management, backup solutions, and performance optimization. Excellent analytical, organizational, and problem‑solving skills. Strong written and verbal communication skills with the ability to interact effectively with technical and non‑technical stakeholders. Ability to obtain Public Trust Security Clearance. Preferred Qualifications Experience supporting federal government customers. Experience with virtualization technologies such as VMware or Hyper‑V. Familiarity with cloud infrastructure and hybrid environments. Experience with scripting or automation using PowerShell, Bash, or Python. Knowledge of cybersecurity best practices, vulnerability remediation, and secure system administration. Industry certifications such as Microsoft, Red Hat, VMware, Security+, Server+, or comparable credentials are a plus. Benefits Employee Stock Ownership Plan (ESOP) – annual employer contribution per plan guidelines. 401(k) plan with Roth option: Eligibility for an employer match. Immediate vesting. Paid time off. Holidays – 11 paid holidays per year. Comprehensive medical, dental, and vision plans. Company‑paid Life & AD&D insurance plan. Employee Assistance Program. Wellness resources. Company‑paid training and development program. Voluntary benefits include: Life & AD&D insurance for employee, spouse, and children. Short‑term and long‑term disability (per plan guidelines). Legal Shield and Identity Theft protection plans. Pet insurance. #J-18808-Ljbffr TechFlow Inc
- ...package. 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, and...Senior
- ...Title: Senior Systems Administrator Location: Fort Lesley J. McNair, 300 5th Avenue, Washington, DC 20319 (Hybrid) Duration: Long term Certification: CompTIA Security+ CE and Computing certification Clearance: Active Secret or above Summary:...Senior
- ...Monitor and manage the efficient use of cloud resources, such as CPU, memory, and storage. Identify and mitigate potential threats, system vulnerabilities. Maintain acceptable configurations and identify deviations. Candidate age other special divisional projects...Senior
- ...Senior System Administrator The Senior System Administrator is responsible for administering, maintaining, and securing enterprise systems to ensure stable, reliable, and high-performing IT operations. This role requires a seasoned technical professional with expertise...Senior
- Tripoint Solutions LLC in Washington, DC is seeking a Systems Administrator to provide advanced Tier III technical support for enterprise IT infrastructure and cybersecurity operations. This position involves ensuring timely incident resolution while maintaining system...Senior
$91k - $96k
...Job Description This Senior Systems Administrator position is responsible for maintaining IT infrastructure to support Virginia Tech sites in Alexandria and Arlington. It includes system support, security monitoring, and virtualization, and will involve modifying or replacing...Senior- ...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 Senior...SeniorFull time
- ...Summary Senior Systems Administrator Arlington, VA Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional development is embedded in your employer’s core culture? If so, Chenega...Senior
- ...Employment Type Full Time, Senior-level Department Legal/IT Overview CGS is seeking a Senior Systems Administrator to join our team supporting a wide-ranging technical support initiative for a large Federal agency. CGS brings motivated, highly skilled, and creative people...SeniorFull timeContract workFor contractorsWork at office
- ...Employment Type Full Time, Senior-level Department Legal/IT Overview CGS is seeking a Senior Systems Administrator to join our team supporting a wide-ranging technical support initiative for a large Federal agency. CGS brings motivated, highly skilled, and creative people...SeniorFull timeContract workFor contractorsWork at office
- ...Overview Employment Type: Full Time Department: Legal/IT We are seeking a Relativity Sr. Systems Administrator to join our team! You will handle a variety of projects to support and improve the organization’s network systems. CGS brings motivated, highly skilled, and creative...SeniorFull timeWork at officeFlexible hours
- ...Senior Systems Administrator Employment Type: Full Time, Senior-level CGS is seeking a Senior Systems Administrator to join our team supporting a wide-ranging technical support initiative for a large Federal agency. CGS brings motivated, highly skilled, and creative...SeniorFull timeContract workFor contractorsWork at officeFlexible hours
- ...Senior Systems Administrator II Employment Type: Full Time, Senior-level CGS is seeking a Senior Systems Administrator to join our team supporting a wide-ranging technical support initiative for a large Federal agency. CGS brings motivated, highly skilled, and...SeniorFull timeContract workFor contractorsWork at officeFlexible hours
$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- ...cultures that not only impact their people but also make a meaningful difference in the community. About You You are a Senior‑Level Systems Administrator with experience designing, implementing, securing, and supporting enterprise IT infrastructure in commercial,...Senior
- 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
- ...August 2025 Application Deadline: 29 August 2025 Department: Systems Engineering Location: Headquarters Description Aireon... ...Operating within the Aireon Network Engineering Group, the Senior Systems Administrator is responsible for helping to set up, maintain and manage...SeniorPermanent employmentFull timeTemporary workFor subcontractorWork at officeRemote workFlexible hours
- ...Overview Senior Discovery IT System Administrator — Employment Type: Full-Time, Executive-Level. Department: Legal. CGS is seeking a dedicated Senior Discovery IT System Administrator to join a fast-paced and hard-working team to assist with any legal accounts. As a Senior...SeniorFull timeFor contractorsFlexible hours
- ...Responsibilities Provides advanced systems administration, infrastructure management, cybersecurity compliance, and enterprise modernization support Administer Windows Server, Linux systems, and enterprise infrastructure Manage VMware virtualization and enterprise storage...Senior
- Responsibilities Support the National Programs Intelligence Systems & Application Operating Unit. Install, configure, and... ...with 3+ years of experience. Proven experience in system administration, specifically with Linux, including RHEL and Ubuntu, and UNIX...Senior
- ...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
$164k - $200k
...Responsibilities Perform IAVA patching and reporting across enterprise systems. Maintain and administer Windows Server (various versions)... ...(GPOs) and perform PowerShell scripting for automation and administrative tasks. Utilize AWS services, including EC2, Lambda...Senior- ...Position Name : Senior System Administrator Location : Springfield, VA Clearance Required : TS/SCI with CI Scope Poly Work Schedule : Monday–Friday, within 5:00 AM – 9:00 PM EST window Employment Type : Full-Time Position Overview The GEODS program is seeking a highly...SeniorFull timeContract workMonday to Friday
$150k - $180k
...addition to other position specific requirements which may impact salary Position Overview Amatriot is seeking an experienced Senior Systems Administrator to support the National Programs Intelligence Systems & Application Operating Unit. The SITE III ITS Task Order effort...SeniorFull timeLocal areaWeekend work- ...F&A Technologies LLC (F&A) is seeking a System Administrator /Help Desk Specialist Senior to provide Tier 1-3 level support in the Herndon, VA area. The successful candidate will be a self-motivated, independent worker who can also work in, and contribute to, a team...SeniorWork at officeWeekend work
- ...POSITION OVERVIEW The Senior Systems Administrator ensures the stable operation of Customer's computer software systems and network connections in support of the DoD. This role is responsible for planning, installing, configuring, maintaining, and optimizing network software...SeniorContract workLocal areaRemote work
$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...SeniorContract workWork at officeRelocation- ...Analytica is seeking a seasoned and adaptable Senior System Administrator to join our infrastructure team in supporting an innovative federal mission. In this role, you will provide high-level technical leadership, engineering expertise, and strategic vision to optimize...SeniorFor contractorsLocal area
$77.6k - $176k
...Job Number: R0232760 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...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Systems Administrator. Be the first to apply!
- IT administrator Arlington, VA
- enterprise administrator Arlington, VA
- application system administrator Arlington, VA
- server administrator Arlington, VA
- computer systems administrator Arlington, VA
- system admin Arlington, VA
- systems administrator Arlington, VA
- IT infrastructure administrator Arlington, VA
- microsoft systems administrator Arlington, VA
- senior hvac project manager Arlington, VA

