Senior Systems Administrator (Top Secret Cleared)

Job Description Everforth ECS is seeking a cleared Senior Systems Administrator (Top Secret Cleared) for our Washington, DC office. The role involves secure system administration, endpoint management, user support, patching, monitoring, documentation, and operational sustainment for classified and sensitive law enforcement, national security, and criminal justice missions within the National Security Business Unit. The System Administrator will serve as an operational support specialist responsible for maintaining system health, resolving incidents and service requests, supporting endpoint and application administration, improving documentation, and collaborating across infrastructure, cybersecurity, network, application, and service desk teams. Responsibilities Administer, monitor, maintain, patch, and troubleshoot servers, workstations, virtual desktops, applications, and enterprise platforms. Support endpoint imaging, software installation, hardware setup, user support, and operational sustainment. Respond to incidents, service requests, escalations, and recurring technical issues. Maintain SOPs, operational checklists, knowledge articles, and system documentation. Support patch management, vulnerability remediation, backup/restore activities, and system monitoring. Collaborate with infrastructure, cybersecurity, network, application, and service desk teams. Mentor junior administrators, endpoint support staff, and service desk escalation personnel. Identify automation opportunities, service improvements, endpoint modernization needs, and ways to reduce ticket volume. Required Skills Active Top Secret clearance with SCI eligibility; TS/SCI preferred. 5+ years of system administration, endpoint support, or enterprise IT operations experience. Experience with Windows Server, Linux, desktop support, patching, scripting, monitoring, and troubleshooting. Knowledge of ITSM ticketing, service request management, incident response, and change management. Ability to maintain operational documentation and follow secure administration procedures. Strong customer service and cross‑functional collaboration skills. Desired Skills Security+, Microsoft, Linux, VMware, ITIL, cloud, or related certification. Experience with BigFix, Splunk, ServiceNow, Azure DevOps, SharePoint, Exchange, SQL, VDI, or enterprise monitoring tools. Experience supporting classified, law enforcement, national security, criminal justice, defense, or intelligence environments. Experience mentoring junior staff and contributing to service improvement or account growth initiatives. Salary Range: $120,000 - $135,000 ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis of any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law. #J-18808-Ljbffr ECS