Tier 3 IT Service Desk Lead - TS Cleared, On-site DC

T-Rex Solutions; Washington (District of Columbia); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

PTO (prorated)

Parental leave

Health, vision, dental benefits

Training budget

401(k) with company match

Job summary

T-Rex Solutions, LLC is seeking a Tier 3 IT Service Desk Lead to support the DOC OSSD. This role emphasizes expert troubleshooting, advanced identity management, and cross-team collaboration to resolve high‑impact incidents for government clients.

The position requires TS clearance, extensive M365/Azure experience, and strong ServiceNow and PowerShell capabilities. On-site work at the Herbert Hoover Building in Washington, DC is required, with standard business hours.

Qualifications

• Top Secret clearance required.
• Extensive experience with Microsoft 365 and Azure services including tenant management and access controls.
• Advanced Active Directory administration including GPOs, OU design, and cloud integration.
• Proven experience with ITSM modules: Incident, Problem, Change, Knowledge, and Request Fulfillment.
• PowerShell scripting to automate admin tasks and system integrations.
• Strong problem-solving skills and experience escalating complex issues.

Responsibilities

• Provide expert-level troubleshooting and oversee complex incident resolution across tiers.
• Handle advanced account and identity management with elevated permissions.
• Perform deep diagnostics and root-cause analysis for infrastructure components.
• Configure and optimize ServiceNow workflows for escalations and fulfillment.
• Automate tasks with PowerShell to improve efficiency and enforce security standards.
• Coordinate with engineering, cybersecurity, and infrastructure teams during major incidents.
• Support data governance, FOIA/eDiscovery searches, and retention/compliance needs.
• Deliver service desk operations including Tier 3 ticket handling and automation.

Skills

Tier 3 lead

Incident resolution

M365/Azure

Active Directory

ITIL processes

PowerShell

Tools

ServiceNow

Azure AD

Job description

T-Rex Solutions, LLC is seeking a Tier 3 IT Service Desk Lead to support the DOC OSSD. This role emphasizes expert troubleshooting, advanced identity management, and cross-team collaboration to resolve high‑impact incidents for government clients.

The position requires TS clearance, extensive M365/Azure experience, and strong ServiceNow and PowerShell capabilities. On-site work at the Herbert Hoover Building in Washington, DC is required, with standard business hours.