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System Administrator
System AdministratorClientMind Recruiting Inc. • Greenbelt, Maryland, United States
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System Administrator

System Administrator

ClientMind Recruiting Inc. • Greenbelt, Maryland, United States
[job_card.variable_days_ago]
[job_preview.job_type]
  • [job_card.full_time]
[job_card.job_description]

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.
  • U.S. Citizenship required.

    • Preferred Experience

  • DevOps tools such as Git or SVN.
  • Android device management and MDM solutions.
  • PBX system support.
  • Intrusion detection systems, SIEM tools, or SOC workflows.
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