Demo

Corporate System Administrator with Security Clearance

RealmOne
Columbia, MD Full Time
POSTED ON 6/20/2026
AVAILABLE BEFORE 7/18/2026
As a cleared Corporate System Administrator, you will be responsible for supporting and maintaining our corporate Windows and Linux systems, managing our Active Directory environment, maintaining network infrastructures, and assisting with cloud infrastructure on Azure. Additionally, you will be troubleshooting and maintaining the Windows workstations and network in cleared spaces.

Responsibilities: * Install, configure, and maintain Windows and Linux servers and workstations.

  • Manage and maintain Active Directory, including user accounts, group policies, and domain controllers.
  • Assist in managing cloud infrastructure on Azure, including virtual machines, storage, and networking.
  • Monitor and maintain Veeam backups.
  • Configure and maintain network infrastructure, including routers, switches, and firewalls.
  • Provide support for Ubiquiti, Dell, and Cisco network appliances including advanced configurations such as packet inspection and subnetting.
  • Assist in developing, implementing, and maintaining security policies and procedures.
  • Troubleshoot system and network issues and escalate when necessary.
  • Provide end-user support and training as needed Qualifications: * Bachelor's degree in Computer Science, Information Technology, or related field.
  • 5-7 years of experience in system administration or related field.
  • Strong knowledge of Windows and Linux operating systems.
  • Experience working with infrastructure inside cleared spaces
  • Experience with Active Directory, including user management and group policies.
  • Experience with Hyper-V and Window30s Server.
  • Familiarity with cloud computing platforms such as Azure and AWS.
  • Familiarity with DUO, ServiceNow, and Cisco phones is a plus
  • Familiarity with STE/STN requirements
  • Experience with Veeam backup technology.
  • Knowledge of networking concepts and protocols.
  • Experience with Ubiquiti, Dell, and Cisco appliances is a plus.
  • Excellent problem-solving and communication skills.
  • Ability to work in a fast-paced environment and prioritize tasks effectively.
  • Ability to work after hours and weekends as needed Position requires active Security Clearance with appropriate Polygraph

Salary.com Estimation for Corporate System Administrator with Security Clearance in Columbia, MD
$110,739 to $137,720
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