On-Site System Troubleshooting Act as the L1 and L2 escalation point for all technical issues across multiple client environments. Investigate root-cause analysis (RCA), incident resolution, and long-term corrective action planning. Diagnose advanced issues, credentialing workflows, hardware faults, network routing, and subsystem integrations. Engage vendor support teams for deep-dive troubleshooting, bug escalations, and patch management. Perform hardware replacement, firmware upgrade and system patching. Multi-Platform System Expertise Hands-on expertise in various Systems : LenelS2 OnGuard Genetec Milestone VMS Ability to configure, integrate, and optimize controllers, readers, credential formats, PIN/biometric workflows, and enterprise permissions across platforms is essential. Maintenance, Optimization & Lifecycle Management Implement system preventive maintenance, system health checks, and upgrade / patching. Ensure proper documentation: Service reports, update of any design docu...