Top Senior Level IT Support & Helpdesk Jobs in Phoenix – Mesa – Scottsdale, AZ

Lead and govern global IT change management lifecycle: intake, risk-based assessment, approvals, execution, validation, post-change review, reporting, and continuous improvement. Coordinate across IT teams, vendors, MSPs, and regions to minimize service disruption, maintain audit-ready records, deliver training, and drive tooling and process automation opportunities to support high-availability and data center operations.

Provide expert technical support for commercial and industrial water treatment systems (UV, ion exchange, filtration, RO). Troubleshoot, manage warranty and logistics inquiries, coordinate field service and startups, interpret wiring diagrams/CAD, use Salesforce for service management, and provide on-call support. Travel ~20%.

Lead Tier 3 technical and integrations support, build and manage senior SME teams, own enterprise escalation management, improve SLAs and diagnostics, partner with Engineering and Product to resolve root causes and drive operational efficiencies.

Provide advisory services to assess and improve ManageEngine Endpoint Central for a macOS fleet: recommend packaging and deployment best practices (PKG/DMG), patch/update scheduling, repository/version control, integration with MDM/ITSM/security tools, troubleshoot complex deployment issues, improve documentation, and coach internal IT staff during periodic strategy check-ins.

Provide frontline technical support for developer-facing productivity tools: troubleshoot incidents, automate support tooling, create runbooks and documentation, drive product and operational improvements, and partner with engineering and PM teams to improve developer experience and reduce friction.

Provide tiered inbound support across phone, email, and chat; troubleshoot Tenna software and hardware; manage HelpScout/JIRA tickets; escalate and collaborate with Engineering, Product, QA and Hardware to resolve issues and identify trends; assist Customer Success and ensure correct provisioning and documentation.

Own the end-to-end major incident lifecycle: act as incident commander for Sev-1 events, improve MTTR and on-call practices, run blameless postmortems, drive reliability metrics and roadmaps, manage incident communications and status updates, and define incident operating models, runbooks, and severity frameworks.

Administer and secure enterprise IT and OT environments across sites, supporting Windows Server, virtualization, networking, cloud (Azure/M365), PLC/SCADA integrations, backups, DR, segmentation and Zero Trust initiatives. Provide Tier 2/3 escalation, network/OT troubleshooting, monitoring, documentation, compliance support, and collaborate with infrastructure, security, and manufacturing teams to maintain production uptime.

Provide Tier 3 support for Microsoft Dynamics 365 and Power Platform: troubleshoot complex incidents, perform RCA, manage Microsoft escalations, maintain Dataverse and environment lifecycle, support integrations, document resolutions, and mentor lower tiers while following ITIL-aligned processes.

Provide Tier 3 technical support for Dynamics 365 and Power Platform: troubleshoot complex incidents, perform root cause analysis, manage Microsoft escalations, maintain Dataverse and environment lifecycle, support integrations and security, document resolutions, and mentor Tier 1/2 engineers while following ITIL processes and participating in on-call rotation.