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Sentinel Technologies

IT services, cloud, and security solutions

Senior Systems Administrator

System AdministrationPosted on Nov 12
Full-timeGreen Bay, WI, USANo salary listed

About the Job

Requirements

  • A minimum of 7 years of experience in a network, systems administration, or infrastructure support role is required.
  • Advanced experience designing, implementing, and troubleshooting Microsoft 365 environments is required.
  • Strong expertise in Active Directory, Group Policy, Exchange, SharePoint, Hyper-V, and Microsoft Configuration Manager (SCCM/MECM) is required.
  • Hands-on experience with Windows Server administration, patch management, and system migrations is required.
  • Experience with enterprise firewall administration, certificate management, and vulnerability remediation is required.
  • A strong understanding of networking concepts, including routing, switching, TCP/IP, DNS, DHCP, and VPN technologies, is required.
  • Experience performing Cisco IOS XE upgrades and network device maintenance is required.
  • Knowledge of cybersecurity best practices, security monitoring, and incident response procedures is required.
  • Legally authorized to work in the United States without sponsorship.
  • Strong troubleshooting and customer service skills are required.

Responsibilities

  • Maintain, upgrade, and manage software, hardware, and network infrastructure for the client.
  • Ensure high availability and security across all business systems.
  • Provide escalated technical support to end users.

About the Company

Sentinel Technologies

IT services, cloud, and security solutions

Sentinel Technologies provides IT services and solutions to businesses of all sizes. Its offerings include 24/7 managed services via a Network Operations Center (NOC) and Security Operations Center (SOC), the CloudSelect ITaaS platform, Fortis cybersecurity services, IT consulting, and technology resale through partners like Cisco, Dell EMC, and Microsoft. The company differentiates itself with long-tenured leadership, a consistent strategic direction, and an integrated service model that combines monitoring, security, cloud, and consulting across the full IT lifecycle. Its goal is to help clients improve operational efficiency and business performance by delivering scalable, end-to-end IT solutions that align technology with business needs.

Company size
501-1,000
Company stage
Seed
Total funding
$400K
Headquarters
Downers Grove, IL
Founded
2009

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