Senior IT Support Specialist - Windows & M365 (Tier 2/3)

Addison Group; Fort Collins (CO); On-site; USD 41,000 - 47,000; Full time

Benefits offered by this job

Medical

Dental

Vision

401k

Job summary

Addison Group is seeking an experienced Sr Site Support Specialist in Fort Collins, CO. The role focuses on Tier 2/3 end-user support, Windows and Microsoft 365 troubleshooting, and Active Directory activities. You will manage devices, licensing, and access, with occasional after-hours support as needed.

The position offers benefits like medical, dental, vision, and a 401k, and requires strong communication and customer-service skills to thrive in a fast-paced environment.

Qualifications

• 5+ years hands-on IT support, including Tier 2/3.
• Strong Windows 10/11 and Microsoft 365 troubleshooting.
• Active Directory accounts, groups, permissions, and access management.
• TCP/IP, wireless networks, VPNs, and endpoint security.
• PC hardware/software imaging, deployment, and asset management.
• Excellent communication and customer-service skills.

Responsibilities

• Provide advanced technical support for laptops, desktops, peripherals, mobile devices, and common business applications.
• Troubleshoot Windows 10/11, Microsoft 365, connectivity, VPN, hardware, software, and user access issues.
• Administer routine Active Directory functions, including user accounts, groups, permissions, and password-related issues.
• Support Microsoft 365 user administration, licensing, email, and application troubleshooting.
• Image, configure, deploy, and replace Windows endpoints.
• Install and troubleshoot approved software, updates, and endpoint configurations.
• Diagnose basic LAN, wireless, TCP/IP, and network connectivity issues.
• Maintain accurate asset, inventory, and ticket documentation.
• Escalate complex infrastructure issues while partnering with other IT teams and third‑party support providers.
• Assist with technology deployments, upgrades, and end‑user improvement initiatives.
• Provide occasional after‑hours support when required.

Skills

Tier 2/3 IT support

Windows 10/11 troubleshooting

Microsoft 365 troubleshooting

Active Directory management

TCP/IP Networking

VPN troubleshooting

End-user support & communication

Tools

Microsoft 365 Admin Center

Active Directory tools

Endpoint deployment imaging tools

Job description

Addison Group is seeking an experienced Sr Site Support Specialist in Fort Collins, CO. The role focuses on Tier 2/3 end-user support, Windows and Microsoft 365 troubleshooting, and Active Directory activities. You will manage devices, licensing, and access, with occasional after-hours support as needed.

The position offers benefits like medical, dental, vision, and a 401k, and requires strong communication and customer-service skills to thrive in a fast-paced environment.