Top IT Support & Helpdesk Jobs in San Diego, CA

Provide L2/L3 production support, monitoring, troubleshooting, and root-cause fixes for Oracle Siebel CRM. Support upgrades, repository merges, IRM, deployments across environments, integrations (EAI/Web Services/REST), performance tuning with DBAs, and periodic 24x7 on-call coverage. Document processes and assist release and migration activities.

Provide hands-on cloud and system administration, monitoring, and 24x7 operational support. Detect, triage, and escalate incidents, coordinate cross-team response, restore services, maintain observability, automate routine tasks, and contribute to post-incident reviews and continuous improvement within a VA mission environment.

Senior technical owner for enterprise support: reproduce and resolve complex issues end-to-end, define SLAs/severity/escalation, hand off clear tickets to engineering, build KB and onboarding, and synthesize product feedback.

Provide Tier 2 technical support and escalations for Tailscale customers: troubleshoot complex networking and SSO issues, manage ticket SLAs, mentor Tier 1, collaborate with Product/Eng, and contribute to documentation and recurring friction elimination.

Provide advanced remote customer support for DoD supercomputing centers: install, build, verify, and optimize applications and containers on HPC systems, assist users compiling and debugging code, identify usable software, develop SOPs/ConOps and workflows, and coordinate with administrators, Tier 3 specialists, and vendors to meet mission requirements.

Resolve escalated technical issues from frontline support for a SaaS product, provide direct customer solutions, and act as Voice of the Customer to Product and Engineering. Create documentation and troubleshooting resources, work with APIs/JSON/SQL/TCP-IP and issue trackers, and collaborate across teams to improve systems and reduce engineering load.

Provide Tier 1-2 support and monitoring for customer cloud environments, assist with troubleshooting, upgrades, patching, SSL renewals, DNS (Cloudflare), and SaaS updates (Sonis). Maintain documentation and escalate complex issues to senior teams while participating in onboarding and training.

Manage and grow a remote helpdesk team while providing hands-on tier 2/3 support. Own ticket triage, SLAs/KPIs, onboarding/offboarding, M365/Google Workspace and Azure AD administration, endpoint management via Intune/MDM, vendor and asset lifecycle, security policy enforcement, documentation, and process improvement.

Provide remote technical support to branches and remote users: diagnose and resolve video/phone/access/connectivity issues, handle password resets, follow knowledge base, document incidents, analyze trends, prioritize and escalate as needed.

Administer and maintain hybrid infrastructure including Windows Server, Microsoft 365, Active Directory/Entra ID, Nutanix, Azure/AWS, backup/disaster recovery, and endpoint management. Monitor performance, implement security controls, support incident/change management, provide Tier II/III escalation, create documentation, assist with automation and on-call/after-hours support, and collaborate with engineering, security, and service desk teams to ensure availability, compliance, and operational efficiency.