~ whoami
a1ioth_
Yuheng Cao
developer · Amsterdam
I build products end to end — data pipelines, APIs, maps and payments — and ship them. Mostly .NET. Currently all-in on where2live.
// current work
where2live.app
visit →Neighbourhood safety for the Netherlands, one postcode at a time. Police-recorded crime and nuisance data, mapped street-block deep, updated monthly. Live since July 2026.
467,000 postcodes
18,500 areas
monthly data refresh
live · paid orders
$ stack — C# · ASP.NET Core · EF Core · SQLite · React · TypeScript · Docker · Unity (past life)