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

Provide technical support and end-to-end case management for GE Vernova Monitoring & Diagnostics devices. Troubleshoot and reproduce issues, coordinate with product teams, recommend repairs/upgrades, maintain records in CRM/ERP/quality tools, own tier 3–4 escalations, produce customer case summaries and metrics, and support after-hours/on-call customer needs.

Remote IT Manager responsible for analyzing, upgrading, and administering IT systems (networks, servers, email, backups), evaluating vendors and technologies, managing projects, tracking inventory, training staff, and providing technical support to improve operational efficiency.

Manage and secure the Microsoft 365 tenant, including Entra ID/AD, Exchange, SharePoint, Teams, OneDrive and Power Platform. Perform tenant and data migrations, implement SSO, create documentation and training, support operations and security initiatives, and provide escalation support while evaluating scalability and adoption of new M365 capabilities.

Investigate and resolve complex platform and integration issues, own escalations to Engineering with clear reproduction and impact assessment, coordinate P1 incidents, monitor Datadog and observability signals, document resolution patterns for the knowledge base, and provide overflow support for Delivery Support.

Lead day-to-day system administration for cloud and on-prem systems: install, configure, maintain, optimize, and secure servers and networks. Perform capacity and performance analysis, automate admin tasks, train staff, manage application networking and load balancing, and conduct vulnerability management while supporting CUI and government security requirements in a fully remote Agile environment.

Administer and support ClearPath OS2200 environments including installation, configuration, upgrades, patching, monitoring, capacity planning, and lifecycle management. Troubleshoot performance issues, tune systems, manage storage/tape, workloads, databases, middleware and batch/transaction processing. Develop automation, runbooks, documentation, participate in on-call incident response, and follow ITIL change management. Support firmware/Plateau installations and SCMS II configuration, and collaborate with teams and customers for disaster recovery and continuous service improvement.

Implement, configure, support, and troubleshoot Fircosoft/Firco Continuity applications for sanctions screening. Provide L3 production support, monitoring, incident management, RCA, performance tuning, rule and watchlist configuration, integrations (MQ/Kafka/file/TWS), SQL and shell scripting automation, and support upgrades, patches, CI/CD and releases while collaborating with business, infrastructure, compliance, and vendor teams.

Own security posture and HIPAA-aligned safeguards; architect and maintain Microsoft 365/Entra/Intune cloud infrastructure; manage backups, DR, monitoring, patching, VPNs and firewalls; lead M&A IT integrations and playbooks; secure and manage endpoints across Windows, macOS, iOS via Intune, Jamf, Knox; support HRIS/EHR platforms; lead incident response and documentation; enable fast, secure growth for a distributed workforce.

Lead and develop an IT team to run secure, scalable infrastructure and support services. Oversee daily operations, project delivery, vendor management, compliance with security/regulatory frameworks, performance metrics, budgeting, and continuous improvement while partnering with business leaders.

Provide end-to-end functional support for Oracle EBS and Oracle Fusion HCM (Core HR, Benefits, Compensation, Payroll). Handle incidents, requests, changes and problems; liaise with technical and service delivery teams; maintain ITSM records; drive automation and service improvements; analyze recurring issues and create knowledge articles; support presales and transitions; participate in 24x7 shift rotation.