Application tracker

Context

A private tool to track my applications: where each send stands, who replied, what to follow up. I wanted to see what actually happens after sending, without relying on a third-party service.

What I did

• Wrote a Node.js and TypeScript API (Fastify) backed by PostgreSQL.
• Tracked short-link clicks and pixel opens with Cloudflare Workers and a message queue.
• Signed every event sent to the API (HMAC), so no third party can inject one.
• Protected the admin interface with Cloudflare Access, with server-side token verification.
• Built the API for a Kanban-style tracking board: companies, contacts, applications, manual card moves.

Architecture

• Edge: redirect and pixel Workers, a message queue, key-value storage for short links.
• Server: API and PostgreSQL as containers, behind a Cloudflare tunnel, with no open port.
• Personal data: no IP address stored in clear, and a right to be forgotten that deletes a contact in cascade.

Status

Event tracking runs in production. The board interface is under development.