Track Signe

The Problem

Public space monitoring — outdoor advertising, insurance claims, municipal inspections — relied on paper forms and manual processes. No real-time evidence, no verifiable trails, no scale.

The Solution

Track Signe is a SaaS platform that combines QR code scanning, GPS geolocation, and photographic evidence into a single verified flow. Field agents use a React Native mobile app; managers get real-time dashboards and automated reports on the web panel.

Architecture

• REST API built with C# .NET, following DDD and Clean Architecture
• Multi-tenant SaaS with security design for customer isolation
• Angular web panel with real-time dashboards and interactive maps
• React Native mobile app for field agents (QR scan, GPS, camera)
• PostgreSQL database with event-sourced audit trail
• Dockerized infrastructure deployed on Azure

Key Decisions

• Chose .NET over Node.js for the API: stronger type safety and domain modeling
• React Native over Flutter: Multi-Platform Framework and faster iteration, closer to web skillset
• PostgreSQL for relational metadata with potential to scale to vector embeddings in the future
• Azure App Service for predictable scaling without Kubernetes overhead

Impact