Senior Tier 3 IT Service Desk Lead | TS Clearance

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

Benefits offered by this job

PTO upon joining

Parental leave

Health insurance

Vision benefits

Dental benefits

Training budget

Tuition reimbursement

401(k) company match

Job summary

T-Rex Solutions LLC is seeking a Tier 3 IT Service Desk Lead to guide advanced troubleshooting and complex incident resolution for DOC/OSSD. On-site at the Herbert Hoover Building in Washington, DC, you will oversee escalations, perform deep technical analysis, and coordinate with engineering, cybersecurity, and infrastructure teams.

Requirements include Active Top Secret clearance, extensive M365/Azure and AD administration, ITSM experience, and PowerShell scripting.

Qualifications

• Active Top Secret clearance required.
• Extensive experience administering Microsoft 365 and Azure services.
• Advanced Active Directory administration and integration with cloud identity services.
• Experience with ITSM modules (Incident, Problem, Change, Knowledge, Request Fulfillment).
• Proficient in PowerShell scripting for automation and integrations.
• Proven ability to resolve complex multi-tier issues and act as escalation point.
• Experience coordinating with engineering, cybersecurity, and infrastructure teams.

Responsibilities

• Provide expert-level troubleshooting and oversee complex incident resolution across support tiers.
• Perform advanced administration for Microsoft 365, Azure, and AD including MFA, PIV, and onboarding/offboarding.
• Configure and fulfill ServiceNow requests and automate tasks with PowerShell.
• Conduct deep technical analysis across systems, networks, and apps.
• Deliver messaging, collaboration, and data services support (email, OneDrive, licensing, permissions).
• Support FOIA/eDiscovery data retrieval and access management.
• Lead Tier 3 service desk operations and implement automation while complying with LAN SOPs.

Skills

Top Secret clearance

M365/Azure admin

AD administration

PowerShell scripting

ITSM familiarity

ITIL processes

Escalation management

Cross-team coordination

Tools

ServiceNow

PowerShell

Job description

T-Rex Solutions LLC is seeking a Tier 3 IT Service Desk Lead to guide advanced troubleshooting and complex incident resolution for DOC/OSSD. On-site at the Herbert Hoover Building in Washington, DC, you will oversee escalations, perform deep technical analysis, and coordinate with engineering, cybersecurity, and infrastructure teams.

Requirements include Active Top Secret clearance, extensive M365/Azure and AD administration, ITSM experience, and PowerShell scripting.