Things I’ve actually built.

Internal access tool

An internal access-management tool at Belgium’s railway infrastructure manager. It handles delegated access flows around Active Directory and cloud identity. My contribution is mainly on Angular features, ASP.NET Core API work, and fixes around access-flow behaviour.

• Angular feature work on a large internal front-end
• ASP.NET Core API work with EF / MySQL
• Active Directory integration through LDAP
• Cloud identity changes routed through dedicated runners

Related service Identity & access →

Railway routing rewrite

A substantial rewrite of an internal railway-routing algorithm used to calculate initial routes from operator requests. Planners can then review and adapt the proposed route to better match the customer’s operational needs.

• Rewrote the routing logic in Java around a cleaner A* implementation
• Introduced a time-based cost model
• Reverse-Dijkstra heuristic for efficient, admissible search
• Benchmarked against the legacy implementation

Related service Codebase improvement →

Related interactive demo See A* in action →

This site

The page you’re on. It has a real ASP.NET Core API behind it: persisted counters, a SignalR live channel, a booking flow with e-mail verification, and an A* visualiser running in the browser.

• Angular 21 standalone + SSR
• ASP.NET Core API with persistent counters
• SignalR live channel to every open session
• A* visualiser, live counters, MySQL persistence

Related service Application development →