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

Own and scale internal IT and corporate systems, providing end-user support, identity/device management, onboarding/offboarding automation, office and remote network/VPN infrastructure maintenance, vendor/contractor coordination, and administration of internal AI and SaaS tools to improve employee productivity.

Administer and secure servers in a hybrid multi-OS environment. Analyze systems for best practices, remediate security issues, perform root-cause analysis, support physical and virtual infrastructure, and collaborate on systems/process improvements and special projects.

Lead and scale a Support Engineering team handling complex API and payments issues, own incident response and SLAs, build operational processes, drive metrics and automation, partner cross-functionally, and hire and develop team members.

Build and lead a centralized IT function across a holding company and portfolio. Run acquisition IT workstreams and create a Day 1-100 integration playbook. Select and operate identity and access systems, build joiner/mover/leaver processes, maintain living inventory of tools/accounts/licenses, manage MSP relationships and vendor contracts, and connect back-end systems to the cross-portfolio data platform while engaging business stakeholders.

Support DoD enterprise IT service delivery: implement security controls, troubleshoot applications, create silent install packages, manage physical and virtual workstations, handle Tier 3 support, coordinate RMF/A&A accreditation with ISSOs, and work on ITSM, endpoint management, imaging, and SELinux enforcement.

Administer and support PeopleSoft environments including installation, configuration, upgrades/patching, performance tuning, integrations (Integration Broker, IAM/MFA), ElasticSearch implementation, environment builds, monitoring, troubleshooting, and cross-team coordination to maintain high-availability HRMS systems.

Lead technical escalations from intake to validated resolution: run diagnostics across logs, SQL, APIs, cloud and code; classify root causes; review AI-generated fixes; coordinate engineering responses to meet SLAs; improve runbooks, tooling, and prevention to reduce repeat incidents.

Lead desktop/application integration and platform engineering initiatives: design processes, improve performance, mentor staff, manage complex operational projects, create workflows and policies, analyze system issues, and support enterprise endpoint lifecycle, packaging, deployment, and automation.

Manage and supervise remote helpdesk personnel supporting DAI financial/Oracle ERP users for DoD customers. Coordinate staffing, training, scheduling, and liaise with government leads to ensure effective support coverage and system integration.

Lead day-to-day support systems and workflows: manage ticketing, routing, queues, labels, escalations, and intake. Triage urgent issues, prioritize requests, drive technical/operational programs end-to-end, partner with engineering/data/IT, and use Cursor and AI-native workflows to reduce toil and improve system reliability.