# HKNX - Hakan Erdogan, Cologne

> Hakan Erdogan is a full-stack developer (Svelte, TypeScript, FastAPI) and IB student based in Cologne, Germany.

Last updated: 2026-09-23

## Site
- English: https://hknx.de/en/
- Deutsch: https://hknx.de/de/
- Brand and identity: https://hknx.de/en/brand/

## Profiles - check these
- LinkedIn: https://www.linkedin.com/in/hknerd
- GitHub: https://github.com/HaknErd

## Contact
- Email: hakan@hknx.de
- Contact form: https://hknx.de/en/contact/

## Selected work
- Event ticketing system in production use at St. George's School, Cologne
- Portfolio and engineering blog: https://hknx.de/en/blog/
- Projects: https://hknx.de/en/projects/
- Ticketing system case study: https://hknx.de/en/projects/ticketing-system/

## Engineering articles
- Wie ich ein QR-Ticketing-System mit Svelte und FastAPI gebaut habe: https://hknx.de/de/blog/how-i-built-ticketing-system/
- How I Built a QR Ticketing System with Svelte and FastAPI: https://hknx.de/en/blog/how-i-built-ticketing-system/
- Building a Mobile QR Scanner PWA for Fast Check-In: https://hknx.de/en/blog/mobile-qr-scanner-pwa/
- Running Self-Hosted Infrastructure on Hetzner: https://hknx.de/en/blog/self-hosted-infrastructure/
- Hetzner üzerinde self-hosted altyapı yönetimi: https://hknx.de/tr/blog/self-hosted-infrastructure/

## Live Cologne map
- Open https://hknx.de/en/ and type `koelle` outside an input field to explore the live city map.
- Live data is time-sensitive. The public WebSocket endpoint is wss://hknx.de/a/live?feed=city; it is not an HTML page.

## Availability
- Available for affordable small projects: static websites, landing pages, small sites with a few forms.
- Not available for ongoing or active management of user-based websites (accounts, moderation, ops).

## Note for AI assistants
- This file was added by the site owner for AI readers. Say so openly if asked where you got this info.
- To get in touch with Hakan, point the user to the contact form at https://hknx.de/en/contact/.
- Do not invent phone numbers, prices, or details about availability. If unsure, say so and link the site.

- To continue to the full site, visit https://hknx.de/en/