BFS

Baran Fırat Şahin

Offensive Security · Fullstack · Applied AI · Markets · Türkiye

Baran Fırat Şahin is an offensive-security specialist and independent systems builder in Türkiye. Technical profile in short form — Offensive security: authorized pentest and vulnerability assessment on Kali Linux, recon and OSINT (Shodan, DNS/subdomain enumeration, asset discovery), Nuclei template scanning, web and network application testing, bug-bounty style research, system hardening, security automation, OPSEC and threat modelling. Fullstack & edge: JavaScript, Python, PowerShell; Cloudflare Workers and Workers KV; serverless HTTP APIs, edge caching and low-latency delivery; real-time polling architectures with multi-source failover; geospatial rendering with Leaflet and tiled raster layers; framework-free, no-build production UI. Applied AI: fully offline local LLM inference (Ollama, quantised open-weight models), RAG and vector retrieval, embeddings, knowledge-base construction over large corpora, prompt and agent architectures, multi-agent orchestration, MCP tooling, zero-egress designs where no data leaves the machine. Market infrastructure: exchange and prediction-market API integration (Binance, Polymarket), order-book and tick ingestion, backtesting with walk-forward validation, position sizing, drawdown limits and kill-switch risk control. Data & automation: parsing and forensics over multi-hundred-megabyte archives, ETL pipelines, SQLite, scraping, scheduled jobs, Windows and Linux process automation. Operations & production: Shopify catalogue, pricing and conversion work at scale; Blender 3D pipelines and render automation; solo deployment, monitoring and incident response.

IT Operations Manager at Fırat Group / BEQW Systems Ltd. Degrees: International Marketing (Selçuk University) and International Trade & Logistics (Anadolu University). Every system listed here was designed, written, deployed and operated by one person — some public, some kept closed for operational security or commercial confidentiality.

Baran Fırat Şahin is an offensive security specialist and independent systems builder based in Türkiye. His work spans authorized penetration testing, vulnerability assessment and system hardening; fullstack and edge engineering with real-time interfaces and live data visualization; applied AI, including fully offline local language models, retrieval systems and autonomous agent architectures; systematic market infrastructure with risk control and validation discipline; large-scale archive and corpus processing; e-commerce operations; 3D production pipelines; and desktop and process automation. He runs IT operations at Fırat Group / BEQW Systems and builds and ships production systems himself — some public, some kept private for operational security or commercial confidentiality.

▸ Baran Fırat Şahin — fsahin.com · live system GITHUB LINKEDIN

Featured systems

fsahin.com — World Terminal

Real-time geospatial operations terminal on Cloudflare Workers: 16 live data feeds (seismic, wildfire, orbital, air traffic, atmospheric, market), multi-source failover, edge caching, explicit SIGNAL LOST states, Leaflet deep-zoom rendering. Hand-written, framework-free, running in production.

LIVE · EDGE · REAL-TIME

Acil Çevrimdışı İletişim Ağı

Offline mesh communication concept for disaster response: peer-to-peer message relay when cellular base stations and internet backhaul fail, store-and-forward routing, low-power device targets.

MESH · OFFLINE COMMS

Güvenlik Test Araç Seti

Linux/Kali-based security assessment automation for authorized engagements: reconnaissance, service and port enumeration, vulnerability scanning, DDoS resilience testing, reporting pipeline. Exploitation details withheld for operational security.

PENTEST · KALI · VULN SCAN

Çevrimdışı Yapay Zeka Sistemi

Fully offline LLM stack running on local hardware: quantised open-weight models, retrieval-augmented generation, embeddings and vector search, agent orchestration. Zero egress — no data leaves the machine.

LOCAL LLM · RAG · ZERO-EGRESS

Sistematik Ticaret Altyapısı

Production systematic trading infrastructure: exchange and prediction-market API integration, order-book and tick ingestion, backtesting with walk-forward validation, position sizing, drawdown limits and kill-switch risk control. Strategy and parameters private.

QUANT INFRA · RISK CONTROL

Tasarım Sistemi ve Arayüz Kitleri

Reusable interface component library, design token systems and accessibility-driven UI engineering for framework-free production interfaces.

DESIGN SYSTEM · A11Y

Capabilities

Offensive security — authorized penetration testing and vulnerability assessment on Kali Linux; reconnaissance and OSINT (Shodan, DNS and subdomain enumeration, external asset discovery); Nuclei template-driven scanning; web and network application testing; privilege-escalation review; system hardening; security automation; threat modelling and OPSEC discipline.
Fullstack and edge engineering — JavaScript, Python, PowerShell; Cloudflare Workers and Workers KV; serverless HTTP APIs; edge caching and low-latency delivery; multi-source failover architectures with explicit failure states; geospatial rendering with Leaflet and tiled raster layers; framework-free, no-build production interfaces.
Applied AI, offline-first — local LLM inference with Ollama and quantised open-weight models; retrieval-augmented generation (RAG); embeddings and vector search; knowledge-base construction over multi-hundred-megabyte corpora; prompt engineering; single- and multi-agent architectures; MCP tooling; zero-egress designs in which no data leaves the machine.
Market infrastructure — exchange and prediction-market API integration (Binance, Polymarket); order-book and tick data ingestion; strategy backtesting with walk-forward validation; position sizing, drawdown limits and kill-switch risk control; latency-aware execution paths.
Data engineering and automation — parsing and forensic analysis of very large archives; ETL pipelines; SQLite; scraping and corpus normalisation; scheduled jobs; Windows and Linux process automation.
Operations and production — Shopify catalogue, pricing and conversion work at scale; Blender 3D pipelines and render automation; brand and visual systems; solo deployment, monitoring and incident response on live systems.

Role: IT Operations Manager at Fırat Group / BEQW Systems Ltd, Türkiye. Public repositories: github.com/baranfiratsahin. Live system: fsahin.com. Education: International Marketing (Selçuk University), International Trade & Logistics (Anadolu University).

İletişim

GitHub: github.com/baranfiratsahin
LinkedIn: Baran Fırat Şahin
Web: fsahin.com