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Sr. Systems Administrator

Job in Columbia, Lexington County, South Carolina, 29228, USA
Listing for: Core Technology Solutions
Full Time position
Listed on 2026-09-22
Job specializations:
  • IT/Tech
    Systems Administrator, Windows Server, IT Infrastructure, Network Administrator
Salary/Wage Range or Industry Benchmark: 90000 - 120000 USD Yearly USD 90000.00 120000.00 YEAR
Job Description & How to Apply Below
Location: Columbia

Core Technology Solutions is partnering with a longstanding client to identify an experienced Senior IT Systems Administrator for a key addition to its technology team.

This is an excellent opportunity for a well-rounded infrastructure professional who enjoys being hands-on, taking ownership, solving problems, and working across multiple areas of technology rather than operating within a narrowly defined technical silo.

The ideal candidate will bring strong experience supporting Microsoft and virtualized infrastructure, along with practical knowledge of networking, backups/recovery, security technologies, and enterprise systems.

What You'll Do
  • Support, administer, monitor, and troubleshoot a Microsoft-based enterprise infrastructure.
  • Manage and support virtual server environments, with an emphasis on VMware.
  • Maintain Windows Server and related Microsoft technologies.
  • Support backup, recovery, patching, monitoring, and overall systems availability.
  • Troubleshoot infrastructure issues spanning servers, networks, connectivity, firewalls, and related technologies.
  • Support Microsoft 365 and associated enterprise services.
  • Work with technology vendors and partners to resolve issues and implement solutions.
  • Participate in infrastructure upgrades, implementations, and technology initiatives.
  • Proactively monitor the environment and identify potential issues before they become business-impacting problems.
  • Serve as a senior technical resource capable of taking ownership of issues through resolution.
What We're Looking For
  • Approximately 7+ years of progressive systems/infrastructure experience or equivalent demonstrated technical depth.
  • Strong hands-on experience with VMware / virtualized server environments.
  • Strong knowledge of Windows Server and Microsoft infrastructure technologies.
  • Experience with Microsoft 365.
  • Practical experience with enterprise backup and recovery technologies.
  • Working knowledge of networking fundamentals, including TCP/IP, VLANs, subnets, routing, switching, and connectivity troubleshooting.
  • Experience supporting firewall and network-security technologies.
  • Ability to troubleshoot issues across multiple layers of the infrastructure environment.
  • Strong analytical and problem-solving skills.
  • Demonstrated ability to work independently, take initiative, and learn new technologies.
  • Ability to adapt as business and technology priorities change.
Location

This position requires an on-site presence in the Coastal Southeast —> on-site position; relocation considered. Candidates currently outside the area who have a genuine interest in relocation are encouraged to inquire.

Qualified candidates will be contacted directly by Core Technology Solutions to discuss the opportunity and determine mutual fit.

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