Critical infrastructure security system network diagram showing segmented VLAN architecture for bank and luxury residences, Ajax ecosystem with PTZ cameras and NVR monitoring feeds, QR code access control interface with zero-downtime metrics, jewelry store heat mapping analytics with 30% sales increase tracking
Security & Infrastructure

Critical Infrastructure

Banks & Security Systems

Zero
Downtime
+30%
Sales Increase
24/7
Monitoring
VLAN
Segmentation

Overview

I built security systems for banks and luxury residences. Not just software: I pulled cables, configured switches, installed Hikvision/Safire cameras and Ajax systems. The bank's access control worked with temporary QR codes - I saved it by rewriting the system that crashed after few hours due to memory leak and missing input validation. For a jewelry store I did people counting and heat mapping with retroactive reports. In luxury apartments: PTZ cameras on Ajax NVR, IP video intercoms with remote answer, each apartment with its own VLAN. Everything segregated for security.

Key Features

  • Bank QR code system: from daily crashes to zero downtime eliminating memory leak and vulnerabilities
  • Jewelry analytics: people counting + heat mapping → expensive pieces sales +30% in 3 months
  • Ajax ecosystem: hub, perimeter/motion/glass sensors, PTZ/dome cameras, NVR, IP video intercoms
  • Segmented network architecture: separate VLANs for apartments/cameras/intercoms/guests with firewall

Technologies Used

Network SecurityVLANsMonitoringCompliance
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