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

Provide production support for Java/J2EE applications using Kafka and Zookeeper; maintain middleware (Vert.x, Solace, Hazelcast), apply RxJava and Hystrix patterns, troubleshoot DB2 and Oracle databases, and collaborate in a DevOps/Agile environment with strong communication.

Designs, implements, maintains, and troubleshoots server infrastructure and applications. Manages virtualization, backups, disaster recovery, licensing, monitoring, and security per NIST/ITIL. Provides escalated support, mentors junior staff, documents processes, and reports project status. Onsite in Phoenix with on-call responsibilities.

Provide Tier 3 escalation support and systems administration for on-prem and hybrid environments. Install, provision, and maintain servers (OS, DB, apps), manage Active Directory and critical services HA, automate with PowerShell, support virtualization (VMware/Hyper-V), mentor junior staff, document solutions, and participate in on-call rotation.

Manage and operate the IT helpdesk for managed services customers, lead and develop the helpdesk team, handle escalations, document procedures, implement and monitor KPIs, ensure timely issue resolution, and maintain strong customer communication and reporting.

Provide on-site administration and support for Microsoft 365, Windows Server, Active Directory, and local network infrastructure; monitor system health, manage backups (Veeam), troubleshoot endpoints and connectivity, handle incidents and service requests, coordinate vendors, support manufacturing site technologies, maintain documentation, and promote secure computing and disaster recovery readiness.

Lead escalated helpdesk support, administer Jira Service Management, manage vendor relationships, drive ticket taxonomy and automation, mentor Tier 1 staff, enforce SLAs, maintain documentation, ensure data security and QA, and deliver reporting and root-cause fixes to improve user experience.

Administer and maintain middleware/web hosting infrastructure (WAS, JBoss, Apache, IIS) in a 24x7 environment, provide L3/L4 support, perform performance tuning and outage response, implement patches/versions, document procedures, execute change management, and support on-call rotations and shift scheduling.

Lead IT strategy and operations for a multi-site nonprofit: oversee MSP, infrastructure, networking, cloud, Microsoft 365, identity, cybersecurity, ITSM, AI readiness, budgets, vendor management, and disaster recovery to enable secure, scalable services and data-informed decisions.

Lead and supervise global end-user support and client engineering for endpoint lifecycle management, device provisioning, imaging, software deployment, patching, compliance, and workplace technology. Drive service improvements, collaborate with cybersecurity and infrastructure teams, manage escalations, coach staff, coordinate rollouts, and maintain operational documentation and asset controls.

Lead and manage the firm's telecommunications services and team, maintaining the Avaya telephony platform, evaluating UCaaS/cloud PBX options, executing migrations, managing vendors and budgets, ensuring billing accuracy, integrating telephony with collaboration tools, and maintaining compliance, security, and business continuity planning.