Technical Support Specialist Tier III

United StatesUnited States·Costa MesaFull-time Regularmid
Customer SupportTechnical Support Specialist
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Quick Summary

Overview

Job Summary The Tier 3 IT Support Specialist serves as the escalation point for complex technical issues that cannot be resolved by Tier 1 or Tier 2 support.

Technical Tools
azurenetworking

The Tier 3 IT Support Specialist serves as the escalation point for complex technical issues that cannot be resolved by Tier 1 or Tier 2 support. This senior-level position bridges the gap between frontline support and systems administration, providing expertise across desktops, servers, networks, and business-critical applications. The Tier 3 Specialist also assists with IT infrastructure projects, security initiatives, and technology rollouts.

The ideal candidate is a resourceful problem-solver with a strong technical foundation in both end-user support and enterprise IT systems. Success in this role requires the ability to work independently, mentor junior team members, and deliver excellent, timely service to employees and patients in a fast-paced healthcare environment.

Responsibilities

~1 min read
  • Respond to incoming help desk calls and emails from users and provide real-time senior-level support. 
  • Troubleshoot and resolve advanced problems with Windows client OS (Windows 10/11), Microsoft 365, Genesys CCASS, and business applications.
  • Provide support for Windows Server environments (2016, 2019, and beyond), including Active Directory, DNS, DHCP, and Group Policy.
  • Assist with network administration tasks, including switch, firewall, and wireless troubleshooting.
  • Configure, maintain, and support network-connected devices such as printers, scanners, and medical imaging systems.
  • Support and administer the organization’s VoIP/telephony/telehealth systems.
  • Perform, monitor, and validate backups/restores for critical servers, databases, and endpoints.
  • Create, update, and deploy desktop and laptop images using Windows Deployment Services (WDS), SCCM, or similar tools.
  • Administer user accounts, permissions, email distribution groups, and security groups within Active Directory and Microsoft 365.
  • Provide remote troubleshooting using RMM tools, ensuring timely support for distributed staff.
  • Document issues, resolutions, and processes in the ticketing system with accuracy and completeness.
  • Partner with Tier 1/Tier 2 technicians to mentor and share knowledge, improving the team’s overall capability.
  • Collaborate with Systems Administrators/IT Leadership on infrastructure projects such as upgrades, migrations, and system rollouts.

Requirements

~1 min read
  • Education: Bachelor’s Degree in Information Technology, Computer Science, or related field preferred (equivalent experience strongly considered).
  • Certifications:
    • CompTIA Network+ or CCNA strongly preferred.
    • Microsoft MCSA/MCSE or equivalent experience with Microsoft technologies.
    • Additional certifications (e.g., Azure, VMware, security-focused) are a plus.
  • Experience:
    • Minimum 3–5 years in IT support, with at least 1–2 years at the Tier 3 or senior support level.
    • Strong background in troubleshooting Windows OS, Active Directory, networking, and enterprise applications.
    • Experience in healthcare IT, HIPAA compliance, or environments handling sensitive data is highly desirable.
  • Skills:
    • Excellent troubleshooting, documentation, and communication skills.
    • Ability to handle multiple priorities and escalate issues appropriately.

Location & Eligibility

Where is the job
Costa Mesa, United States
On-site at the office
Who can apply
US

Listing Details

Posted
September 29, 2025
First seen
May 6, 2026
Last seen
May 10, 2026

Posting Health

Days active
0
Repost count
0
Trust Level
4%
Scored at
May 6, 2026

Signal breakdown

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CL f53b5640 b02b 41bf 90f7 17e0bc4e4239Technical Support Specialist Tier III