> Markdown version of [/jobs/ext/2544920-senior-systems-administrator](https://www.wearedevelopers.com/jobs/ext/2544920-senior-systems-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Administrator - **Company:** TekSynap Corporation - **Location:** Fort Belvoir, VA, United States - **Experience:** Expert - **Salary:** $100,000.0 - $135,000.0 - **Contract:** Permanent contract - **Skills:** Active Directory, Backup Devices, System Configuration, Linux, VMware ESX Servers, Monitoring of Systems, Identity and Access Management, Network Security, Windows Servers, NetApp Applications, Routing, Network Administration, Data ONTAP (Server Appliance), Public Key Infrastructure, Red Hat Enterprise Linux, Virtual Local Area Networks, Virtualization Technology, VMware VSphere, Software Vulnerability Management, Backup and Restore, Computer Networking Systems, SC Clearance, Information Technology, SolarWinds (Software), Vcenter, Performance Monitor, Data Management, Veeam, Plan of Action and Milestones, Vulnerability Analysis - **Published:** August 22, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9108881/senior-systems-administrator ## About the Role * Top-Secret clearance required with SCI or SCI eligibility. * DoD 8570 Level II or III compliant certification and computing environment certifications required. * Ten (10) or more years of experience. * BS/BA, While performing the duties of this job, the employee is regularly required to use hands to handle, feel, touch; reach with hands and arms; talk and hear. The employee is regularly required to stand; walk; sit; climb or balance; and stoop, kneel, crouch, or crawl. The employee is regularly required to lift up to 10 pounds. The employee is frequently required to lift up to 25 pounds; and up to 50 pounds. The vision requirements include close vision, distance vision, peripheral vision, depth perception, and ability to adjust focus. WORK AUTHORIZATION/SECURITY CLEARANCE * U.S Citizenship Required * Top Secret Clearance with SCI Eligibility required ## Description * Virtualization: Proven experience administering and maintaining VMware vSphere environments, including ESXi hosts and vCenter Server. * Storage & Backup: Hands-on experience managing enterprise storage systems (specifically NetApp ONTAP) and configuring/maintaining automated backup solutions using Veeam Backup & Replication. * Windows Server & Domain Administration: Deep expertise in Windows Server administration, Active Directory (AD), Group Policy Objects (GPOs), and user/group management. * Security & Compliance: Direct experience implementing DISA STIGs (Security Technical Implementation Guides) and conducting vulnerability scans using ACAS (Assured Compliance Assessment Solution). * Monitoring & Network Management: Familiarity with Cisco networking concepts (VLANs, routing, switching, Adaptive Security Appliance) and experience utilizing SolarWinds (or similar enterprise monitoring suites) for network and system performance monitoring. * Identity & Access Management: Experience managing Certificate Authorities (CA servers) and Public Key Infrastructure (PKI) for secure network authentication. * Linux Familiarity: Basic administration of Red Hat Enterprise Linux (RHEL) environments. * Documentation & Baselines: Develop IT operating procedures, techniques, and baseline configuration guides. * Hardware Support: Perform operations and maintenance support on laptop PCs and systems. * Technology Refresh: Participate and assist in researching IT solutions in support of technology refresh as required to support IT system development and life cycle activities. * Vulnerability Management: Resolve IT-related Plan of Actions and Milestones (POA&M) and remediate software vulnerabilities via security patching and specialized software configurations. * RMF Support: Support the Risk Management Framework (RMF) and assist in the security assessment of the IT environment as required. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Discover the open source trio you didn’t expect: .NET and PostgreSQL on Linux](https://www.wearedevelopers.com/videos/2042-discover-the-open-source-trio-you-didn-t-expect-net-and-postgresql-on-linux) - [Checkmate: 5 Real Incidents That Can End a Software Company](https://www.wearedevelopers.com/videos/100126-checkmate-5-real-incidents-that-can-end-a-software-company) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Walking Into The Era of Supply Chain Risks](https://www.wearedevelopers.com/magazine/106-walking-into-the-era-of-supply-chain-risks)