Posted 3d ago

IT Technician III

@ ADT
Irving, Texas, United States
OnsiteFull Time
Responsibilities:lead escalation, troubleshoot endpoints, coordinate incidents
Requirements Summary:4+ years of end-user/endpoint support; Windows/macOS expertise; Microsoft 365; endpoint management (Intune/JAMF); scripting (PowerShell/Bash); ITSM experience.
Technical Tools Mentioned:Intune, JAMF, Microsoft 365, PowerShell, Bash, Active Directory, Entra ID, Autopilot, ServiceNow, Jira, Remedy
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Job Description

Summary:

The End User Support Technician III provides senior-level, expert technical support and operational leadership for end-user computing and workplace technology services. This role owns complex escalations end-to-end, drives root-cause resolution, and partners with infrastructure, security, and application teams to improve reliability and user experience at scale. Technician III acts as a technical lead for the desk-side / endpoint support function by establishing standards, mentoring technicians, and contributing to engineering efforts such as automation, endpoint hardening, and modern device management.

  Duties and Responsibilities: Senior Escalation & Technical Resolution

  • Serve as the highest-level escalation point for desktop, laptop, peripheral, printing, and endpoint connectivity issues, including intermittent and hard-to-reproduce failures.
  • Lead advanced troubleshooting across Windows and macOS, including OS corruption recovery, complex profile remediation, driver/firmware conflicts, and performance tuning.
  • Resolve complex Microsoft 365 collaboration issues (Outlook/Exchange, Teams, OneDrive/SharePoint) by isolating client vs. service vs. network causes and coordinating with upstream teams as needed.
  • Support executive/VIP users and critical business functions with a high degree of discretion, urgency, and proactive communication.
  • Define technical runbooks for high-impact incidents and act as incident commander / technical lead when required.

Endpoint Engineering, Management & Security

  • Administer and troubleshoot modern endpoint management platforms (e.g., Intune, JAMF) including policy deployment, compliance, application packaging, and update rings.
  • Partner with Security to implement endpoint hardening, encryption, EDR troubleshooting, conditional access support, and least-privilege access practices.
  • Design and maintain standardized builds, imaging/provisioning processes (e.g., Autopilot / zero-touch), and device baseline configurations.
  • Develop automation and self-service solutions using scripting (e.g., PowerShell, Bash) to reduce ticket volume and improve consistency.
  • Provide advanced Active Directory / Entra ID support (accounts, groups, device objects) and coordinate identity/access troubleshooting across systems.

Collaboration, Conference Rooms & Workplace Technology

  • Own Tier III/IV troubleshooting for conference room and AV ecosystems, including recurring incident patterns and vendor engagement.
  • Support and optimize Microsoft Teams Rooms / Zoom Rooms, room scheduling panels, and integrated audio/video signal chains (cameras, mics, DSPs, displays).
  • Create preventative maintenance standards, monitoring/health checks, and rapid recovery playbooks for high-visibility spaces.
  • Provide on-site leadership during executive meetings, broadcasts, and business-critical events.

Incident, Problem & Change Management

  • Own major incident response for end-user computing issues: triage, stakeholder updates, technical coordination, and post-incident review inputs.
  • Perform deep root cause analysis (RCA) for recurring issues and drive corrective actions across teams, including documentation and knowledge base improvements.
  • Define and track service metrics (e.g., repeat incident rate, resolution quality, backlog health) and recommend operational improvements.
  • Participate in change planning, testing, pilot validation, and enterprise rollouts; provide go-live support and rollback guidance.

Leadership, Mentorship & Service Excellence

  • Act as a technical lead for Tier I/II technicians by providing guidance, technical reviews, and escalation coaching.
  • Create and maintain standard operating procedures, troubleshooting guides, and training materials to improve consistency and speed of resolution.
  • Drive adoption of best practices for customer communication, documentation quality, and end-to-end ticket ownership.
  • Contribute to IT projects (technology refreshes, migrations, new site openings, pilots) as a technical workstream owner.

Asset, Vendor & Lifecycle Management

  • Oversee complex break/fix workflows and coordinate with vendors for warranty repair, advanced replacements, and recurring hardware failure trends.
  • Provide input into hardware standards, lifecycle strategy, and device models/accessory recommendations aligned to role-based needs.
  • Ensure endpoints meet corporate configuration, security, and compliance standards throughout the device lifecycle.

  Required Qualifications:

  • Associate or bachelor’s degree in Information Technology, Computer Science, or equivalent professional experience.
  • 4+ years of experience in end user / endpoint support, including senior escalation ownership.
  • Demonstrated expertise supporting Windows and macOS in enterprise environments, including device provisioning and lifecycle operations.
  • Strong experience with Microsoft 365 services and advanced troubleshooting of identity, licensing, and collaboration workloads.
  • Hands-on administration and troubleshooting experience with endpoint management (Intune, JAMF, or equivalent) and security tooling (encryption/EDR).
  • Proficiency with scripting/automation for operational efficiency (e.g., PowerShell; Bash for macOS environments).
  • Strong experience with ITSM platforms (ServiceNow, Jira, Remedy, or similar), including problem management and knowledge management practices.
  • Excellent communication skills with the ability to translate technical details for non-technical stakeholders.

  Preferred Qualifications:

  • Experience acting as a lead technician or team lead (work prioritization, mentoring, quality reviews).
  • Advanced enterprise troubleshooting across networking fundamentals (DNS, DHCP, VPN, Wi‑Fi, proxy) and endpoint-to-cloud connectivity.
  • Experience designing and supporting conference room standards and AV ecosystems, including vendor management and preventative maintenance.
  • Experience supporting regulated or high-security environments and security controls (conditional access, MFA, certificate-based auth).
  • Relevant certifications such as Microsoft (Modern Desktop/Endpoint), ITIL, CompTIA (A+/Network+/Security+), Apple (macOS), or equivalent.

  Core Competencies:

  • Expert troubleshooting, hypothesis-driven diagnostics, and root cause analysis.
  • Operational leadership during major incidents and high-visibility escalations.
  • Strong documentation practices and ability to convert solutions into scalable standards.
  • Automation mindset and continuous improvement orientation.
  • Cross-functional collaboration with Security, Infrastructure, Network, and Application teams.
  • Customer advocacy, professionalism, and discretion in executive-facing environments.