Help Desk & Systems Administrator - Windows, AD & Security

Sigmatech Inc

Colorado Springs (CO)

On-site

USD 70,000 - 85,000

Full time

4 days ago

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Job summary

Sigmatech Inc. is seeking a skilled Help Desk System Administrator to support the National Security Space Institute (NSSI) in Colorado Springs.

You will ensure reliable operation of IT systems, provide end-user support, and assist with cybersecurity best practices across desktop, server, network, and enterprise applications. The role emphasizes strong troubleshooting, customer service, and collaboration with engineers, cybersecurity staff, developers, and vendors in a dynamic training

Qualifications

Experience providing help desk support in an enterprise IT environment.
Proficiency with Microsoft Windows desktop and server operating systems, AD, M365, and collaboration tools.
Solid networking fundamentals: TCP/IP, DNS, DHCP, switching, wireless, connectivity troubleshooting.
Strong customer service, communication, and problem solving in fast-paced settings.

Responsibilities

Provide Tier I/II help desk support for hardware, software, OS, network connectivity, printers, and devices.
Administer Windows workstations, servers, AD, GPOs, file shares, and enterprise apps.
Create and manage user accounts, permissions, and access controls.
Monitor system performance and health; apply security patches and baseline configurations.
Assist with network administration including DNS, DHCP, switches, and WLANs.
Support DoD DoD‑related IT environments with proper security practices.
Document incidents, resolutions, and maintain knowledge bases.