System Administrator (mid)

System Administration / Tier III Support Specialist Sterling, VA Pay From: $90,000 per year MUST: Experienced Systems Administrator 5+ years of professional hands on experience providing Systems administration and/or Tier III escalated troubleshooting 3+ years of experience systems administration experience (including infrastructure maintenance, server patching, server backups, and validations) Strong experience with Windows Server administration (AD, GPO, DNS/DHCP fundamentals) Knowledgeable with Microsoft 365 administration/troubleshooting (Exchange/Outlook, Teams, SharePoint/OneDrive) Strong understanding of Identity services (Active Directory + Entra ID), MFA/SSO troubleshooting fundamentals Hands on experience with Patch management concepts, maintenance windows, change documentation, rollback planning Basic troubleshooting for server network issues not limited to Cisco, Fortinet, Meraki, Dell, Palo Alto, Ubiquiti, and SonicWall hardware (routing, switching) is a plus Experience with the management of Citrix Environments including XenApp, XenDesktop and Netscaler products is desired Virtualization design, implementation, and support (VMware, Hyper‑V, Xen) Excellent communication skills both written and verbal Strong attention to detail and highly analytical Strong documentation skills Currently hold or be willing and able to obtain the following certifications and willing to get the others in a timely manner : Network+, Security+, CCNA, or MCSE DUTIES: The ideal candidate will provide escalated break/fix support is the escalation point for critical, complex, or persistent technical issues impacting users and business operations This role focuses on rapid diagnosis, deep troubleshooting, and durable fixes across endpoints, identity, servers, and Microsoft 365 (or equivalent), while coordinating with vendors and Tier 1/2 to restore service and prevent Own Tier 3 escalations and major incidents: triage, isolate impact, restore service, and drive issues to resolution Troubleshoot "creaky"/intermittent problems that are difficult to reproduce (random disconnects, app freezes, login loops, slow performance, recurring crashes) Perform root‑cause analysis (RCA) and implement permanent corrective actions (not just workarounds) Provide expert‑level troubleshooting for Windows/macOS OS issues, driver conflicts, profile corruption, performance tuning, OS repair/reimage decisions Provide support and fixes for Microsoft 365 issues (mail flow, Outlook profile issues, Teams reliability, OneDrive/SharePoint sync and permissions) as well as Authentication and access failures (AD/Entra ID sign‑in issues, SSO/MFA loops, account lockouts, token/certificate problems) Provide support for VPN/Wi‑Fi stability, DNS resolution issues, endpoint firewall/proxy conflicts (coordinate with Network/Security teams as needed) We are looking for candidates with a desire to grow their knowledge and understanding of a variety of tools and systems Plan and execute server patching and maintenance Provide backup for and coaching/ training as needed to the tier 1 and tier 2 support teams and act as the primary escalation point for the team Able to be assigned projects, and adhere to schedules for on time completion #J-18808-Ljbffr