Top IT Support & Helpdesk Jobs in St. Louis, MO

Implement, configure, and support hotel IT systems (PMS, POS, guest-facing tech); design and maintain network infrastructure and security; perform deployments, migrations, monitoring, and post-deployment support; document procedures and transfer knowledge to client teams; collaborate with project managers and vendors to meet project milestones and ensure operational readiness.

Write, edit, and produce USCG-supported IT documentation (user manuals, installation guides, training materials, proposals, reports). Gather and translate technical information for technical and non-technical audiences, conduct research, and create user migration and new site documents.

Contract IT System Administrator to manage and harden multi-cloud (AWS/Azure) infrastructure and Microsoft 365 identity/collaboration stack, support endpoints and managed IT/security SaaS platforms, automate routine tasks with scripting, maintain documentation and compliance posture for Department of War mission spaces, and serve as hands-on technical escalation for operational issues.

Contract IT System Administrator to manage and harden multi-cloud (AWS/Azure) infrastructure and Microsoft 365/Entra ID, support endpoints and managed IT/security SaaS, automate admin tasks with scripting, maintain documentation, and help meet DoW security and compliance expectations.

Provide internal IT support and endpoint management for a fully remote workforce: provision and maintain macOS/Windows devices, enforce endpoint security, manage MDM/UEM and SaaS provisioning (Google Workspace, Slack, Atlassian), triage help desk tickets, maintain IT documentation, oversee vendor/licensing relationships, and partner on internal infrastructure and policy initiatives including AI tool governance.

Own and automate IT workflows and SaaS integrations (identity, collaboration, core business apps). Configure SSO and identity protocols, maintain DNS and email security, troubleshoot endpoints and apps, support SOC 2/SOX compliance, document standards, and partner cross-functionally to scale reliable, secure IT systems.

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 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%.

Provide Level 2 technical support by administering Linux/Windows servers, virtualization and cloud platforms, managing databases and web servers, configuring hosting control panels (cPanel, Plesk, WHMCS), troubleshooting networking and performance issues, communicating with customers, and improving support processes.

Provide system administration for Windows-based application hosting: support IIS, monitor performance and availability, coordinate security patching, assist deployments, configuration management, and infrastructure modernization in FISMA-regulated federal environments.