Senior Systems Administrator

MANTECH seeks a motivated, career and customer-oriented Senior Systems Administrator to join our team in Washington, DC. Responsibilities include but are not limited to:Serves as a Customer Advocate supporting VIP level customer; must present professional image and communicate well.  Provides in-person, “white glove” support to key stakeholders.Responsible for providing support to end-user community on difficult hardware, software and network related problems, questions, and use.Provides resolutions to out of the ordinary issues for users. If unable to diagnose problem, will work with service desk management or Tier 3 to diagnose and resolve problem.Responds to trouble tickets, customer calls for support as well as in-person support assistance. Responsible for providing in-depth and high level, support to end-user community on hardware, software and network related problems, questions, and use.Troubleshoot and resolve incident tickets to include data storage, network connectivity, Active Directory accounts and security groups, and third-party software.Update and manage assigned tickets to include daily work notes and customer updates throughout the ticket lifecycle.Troubleshoot customer equipment to include desktops, Multi-Function Print devices, video teleconference hardware, and various other IT assets.Minimum Qualifications:Minimum of five (5) years of related experience in computer hardware, software, networking systems, and in the set-up, configuration, use, and troubleshooting of computer systems.Demonstrated experience troubleshooting and resolving issues with data storage, network connectivity, Active Directory accounts and security groups, third-party software, VDIs, desktops, thin clients, printers, scanners, fax machines, and MFDs.Demonstrated experience managing and updating customer tickets in a ticketing system.Outstanding customer service skills and practices.Experience contributing to a service desk technical knowledge base.Compliance with DoD 8570.01-M/8140.01 and have CompTIA Security+ certificationPreferred Qualifications:Proficient with SolarWinds Web HelpdeskProficient working with SharePoint and supporting customer related issuesProficient working with and supporting Microsoft Office productsClearance Requirements:Must have a current/active TS/SCI clearance and the ability to obtain and maintain a Yankee White Clearance.Physical Requirements:Must be able to be in a stationary position more than 50% of the timeMust be able to communicate, converse, and exchange information with peers and senior personnelConstantly operates a computer and other office productivity machinery, such as a computerThe person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situationsThe person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

Created: 2026-01-01