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GuideIT

System Administrator

GuideIT

. Administer, maintain, and support server and cloud infrastructure as directed by the client’s designated lead .

Posted 10/16/2026full-timeCharleston • South Carolina • United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies
AWSAzureCloudDNSEC2FirewallsLinuxSMTPSwitchingTCP/IPVMware

About the role

Key responsibilities & impact
  • Administer, maintain, and support server and cloud infrastructure as directed by the client’s designated lead
  • Provide systems build-out, documentation, support, and new environment and site deployments
  • Deploy, configure, and maintain Windows Server, Active Directory, DNS, DHCP, Group Policy, file and print services, AWS, Azure, Microsoft 365, VPNs, load balancers, and firewall policies
  • Perform system maintenance and upgrades, including service packs, patches, hot fixes, and security baselines
  • Monitor system, platform, and network performance for availability and reliability
  • Conduct resource monitoring, trending, capacity planning, and cloud cost and consumption reviews
  • Administer backup, replication, and disaster recovery processes and participate in restore testing
  • Automate recurring administrative tasks using PowerShell, Bash, or comparable scripting and infrastructure-as-code tooling
  • Follow configuration and change management policies
  • Collaborate with the security team on identity, endpoint, and cloud posture controls
  • Provide escalation-level technical support within strict SLA windows
  • Mentor junior administrators and support staff
  • Contribute to runbooks, standards, and knowledge base documentation
  • Travel occasionally to customer locations, estimated at 25% when needed

Requirements

What you’ll need
  • 5+ years of hands-on system administration experience in enterprise or managed services environments
  • Expertise in Windows Server administration, including Active Directory, Group Policy, DNS, DHCP, certificate services, and MFA
  • Hands-on experience administering AWS infrastructure, including EC2, S3, VPC, IAM, Route 53, and CloudWatch
  • Secondary working knowledge of Microsoft Azure
  • Proficiency administering Microsoft 365, including Exchange Online, SharePoint Online, OneDrive, Teams, Intune, and Entra ID
  • Working knowledge of routers, switches, and firewalls, including Cisco, Meraki, and Palo Alto
  • Understanding of routing, switching, VPN technologies, TCP/IP, DNS, DHCP, SMTP, IMAP, POP3, and other communication protocols
  • Experience with PowerShell or other scripting tools
  • Experience with VMware vSphere or Hyper-V
  • Strong familiarity with ITIL standards and maintaining compliance in regulated environments
  • Knowledge of ticketing systems and ability to manage and resolve tickets promptly
  • Availability for on-call rotation and scheduled after-hours maintenance
  • Authorized to work in the US
  • Bachelor's degree or an equivalent combination of education and relevant experience required
  • Microsoft, AWS, or ITIL certifications are desired
  • Experience with monitoring and observability tools is desired
  • Familiarity with patch management and endpoint configuration is desired
  • Experience with Linux systems administration is desired
  • Experience with infrastructure-as-code and configuration management tooling is desired
  • Exposure to backup and disaster recovery platforms is desired

Benefits

Comp & perks
  • Performance-based bonuses
  • 401K
  • Health insurance coverage
  • Dental insurance coverage
  • Vision insurance coverage
  • Paid holidays
  • Paid time off
  • Career growth and development opportunities
  • Annual Values Awards
  • Career coaching and mentoring
  • Flexible work-life balance
  • Team success and individual accomplishment recognition