> Markdown version of [/jobs/ext/1957231-systems-administrator-ts-sci-w-poly](https://www.wearedevelopers.com/jobs/ext/1957231-systems-administrator-ts-sci-w-poly). 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). --- # Systems Administrator, TS/SCI w/Poly - **Company:** Peraton Inc - **Location:** Annapolis Junction, MD, United States - **Experience:** Experienced - **Salary:** $135,000.0 - $216,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, JIRA, Command Prompt, CompTIA Security+, Dynamic Host Configuration Protocol, Domain Name System (DNS), Subnetting, Network Layer, System Center Configuration Manager, Networking Basics, Network Administration, Windows PowerShell, PuTTY, Remote Administration, TCP/IP, Virtual Local Area Networks, Software Vulnerability Management, Scripting, Nx-os, Functional Dependencies, Network Support, Patch Management, CIS Benchmarks, Firepower, Cisco Switches, Cisco - **Published:** August 6, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17836921?backUrl=%2Fcareer%2F17836921%2FSystems-Administrator-Ts-Sci-W-Poly-Maryland-Annapolis-Junction ## About the Role * Bachelors degree in a technical discipline and 10 years of system administration experience. Five years of additional experience may be substituted for a BS. * An active TS/SCI w/Poly is required. * 3-5 years of combined experience in network administration (mid-level) to include working knowledge of Cisco switches on IOS-XE and NX-OS platforms. * Solid grasp of networking fundamentals: VLANs, subnetting, TCP/IP, DHCP, DNS, and switching concepts. * Understanding port security concepts and remediation. * 5+ years experience administering the customer's classified VDI / thin-client desktop platform * 5+ years experience Windows 10 and/or Windows 11 administration and troubleshooting. * Hands-on experience with PXE-based imaging/deployment. * Proficiency with PuTTY, PowerShell, and Windows command-line tools. * Active Directory user/group administration experience. * Understanding of patch management processes and vulnerability remediation (IAVA-driven). * Strong customer service orientation and clear written/verbal communication. * Experience with endpoint management platforms (SCCM/MECM, BigFix). * Familiarity with security baselines and STIG compliance. * Exposure to ticketing/ITSM systems JIRA. * Basic firewall awareness and coordination experience (e.g., Cisco Firepower/ASA). * Familiarity with remote administration tools. * Understanding of structured cabling, patch panels, and physical connectivity. * Basic scripting/automation for repetitive administrative tasks. Required Certifications: * CompTIA Security+ Preferred Certifications: * Cisco CCST or CCNA ## Description Mid-level Network / Desktop Administrator to support and maintain enterprise network and end-user computing infrastructure. This is a hybrid role combining hands-on switching and network support with desktop/endpoint administration. The ideal candidate is comfortable working across the stack - from configuring VLANs and port security on Cisco switches to imaging endpoints and troubleshooting Windows 10/11 clients - while delivering responsive, professional customer support to end users. This role balances infrastructure work with day-to-day operational support and requires someone who can work independently on routine tasks and escalate appropriately on complex issues. Configure, maintain, and troubleshoot Cisco switches running IOS-XE and NX-OS. * Implement and manage port security, including MAC-based controls and violation remediation. * Support enterprise network fundamentals: TCP/IP, subnetting, DHCP/DNS behavior, and Layer 2/Layer 3 troubleshooting. * Support and help maintain VDI / thin-client infrastructure, including endpoint provisioning and connectivity troubleshooting. * Perform endpoint imaging and deployment via PXE boot and associated deployment tooling. * Administer Windows 10 and Windows 11 endpoints, including configuration, troubleshooting, and lifecycle support. * Execute patch management and remediate vulnerabilities in response to IAVAs, ensuring systems remain compliant with security baselines and STIGs. * Use CLI and administrative tooling - PuTTY, PowerShell, and Windows CMD - for configuration, diagnostics, and routine automation. * Support STE/STN environment and associated operational procedures. * Perform Active Directory tasks such as account and group management, OU navigation, and basic Group Policy awareness. * Document configurations, procedures, and changes; follow existing standards and conventions. * Provide high-quality customer service and end-user support, including ticket handling and clear communication with non-technical staff. * Coordinate across teams on cross-functional dependencies. ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) ## Related Articles - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Everything a Developer Needs to Know About MCP with Neo4j](https://www.wearedevelopers.com/magazine/604-everything-a-developer-needs-to-know-about-mcp-with-neo4j) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Best Coding Boot Camps in Germany](https://www.wearedevelopers.com/magazine/237-best-coding-boot-camps-in-germany)