System Administrator

Clientmind Recruiting is seeking a System Administrator to support systems administration, networking, and security across a Microsoft-centric environment for a client in the Greenbelt, MD area. This role combines hands‑on systems management with end‑user support and will play a key part in maintaining a secure, reliable infrastructure. Key Responsibilities Administer and maintain Microsoft 365 cloud environments, including Azure, Entra ID, Defender, Endpoint Manager, Exchange, Teams, SharePoint, and OneDrive. Manage system administration tasks across Windows and Linux environments, including configuration, maintenance, patching, and troubleshooting. Support implementation and management of security controls aligned with frameworks such as NIST 800-53 , NIST 800-171 , and CMMC . Oversee networking and network security, including firewalls, VPNs, WiFi, VLANs, and network segmentation. Manage virtualization platforms (VMware, Docker, and/or Azure-based virtualization). Support backup and disaster recovery systems, monitoring, and incident response processes. Provide technical support to internal users and maintain detailed documentation. Required Skills & Experience Strong background in system administration and security within regulated or compliance‑driven environments. Experience with Microsoft 365 administration across the full suite of platforms and services. Solid understanding of networking fundamentals, firewalls (pfSense preferred), VPNs (OpenVPN preferred), and segmentation strategies. Familiarity with virtualization technologies—on‑premises and cloud‑based. Experience applying DISA STIGs or similar hardening standards. Strong communication, organization, and time‑management skills. Preferred Experience DevOps tools such as Git or SVN. Android device management and MDM solutions. Intrusion detection systems, SIEM tools, or SOC workflows. Seniority level Mid‑Senior level Employment type Full‑time Job function Information Technology Industries Defense and Space Manufacturing Benefits Medical insurance Vision insurance 401(k) Paid maternity leave Paid paternity leave Tuition assistance #J-18808-Ljbffr ClientMind Recruiting Inc.