Offensive Security · Fullstack · Applied AI · Markets — Türkiye
I build live systems. My work spans offensive security (penetration testing on Kali), fullstack development, applied AI with local LLMs and retrieval-augmented generation, and market infrastructure. I run IT operations at Fırat Group / BEQW Systems. fsahin.com is a system I designed and wrote from scratch, on my own.
fsahin.com is a single-screen, real-time command surface for the planet. It renders live signals from public scientific and civic data providers on one interactive map. There is no template, no framework and no page builder behind it — the frontend is hand-written vanilla JavaScript running against a single Cloudflare Worker at the edge.
The core design rule is real data, honest failure. Every value on screen resolves to a live source. When a feed is unreachable, the interface never fabricates a fallback — it prints an explicit SIGNAL LOST state for that panel. No number on the surface is invented.
The browser only ever talks to its own origin. Every third-party call is proxied through a Cloudflare Worker that adds per-feed edge caching and honest error handling (a real 502 with a source label instead of stale data). Cloudflare KV backs the live visitor counter and the visitor chat wall. The map layer is drawn with Leaflet; aircraft are smoothed client-side between real fixes using their reported ground speed and track (dead-reckoning).
caches.default, honest 502 on upstream failure.SIGNAL LOST, never to fake data.The terminal aggregates public scientific and civic data providers as a visualization layer. All third-party data shown here belongs to and is attributed to the providers below. This site does not own that content — it renders it inside an original interface and links back to each source:
| USGS | Earthquake feed — U.S. Geological Survey Earthquake Hazards Program |
| NASA EONET | Wildfires and natural events — NASA Earth Observatory Natural Event Tracker |
| NASA GIBS | Night-lights (Black Marble) satellite imagery |
| NOAA SWPC | Space weather — planetary Kp index |
| Open-Meteo | Weather and air quality for Turkish cities |
| ADS-B | Flight data — airplanes.live / adsb.lol community networks |
| wheretheiss.at | ISS position |
| CoinGecko / Kraken | Crypto market data |
| Frankfurter | Foreign-exchange rates |
| Wikimedia | Global edit stream (EventStreams) |
| News wires | Headlines shown as a ticker that links to the original publisher; full texts are never copied |
LinkedIn: Baran Fırat Şahin
GitHub: github.com/baranfiratsahin
Web: fsahin.com