# Dawid Czerwiński

> Portfolio, systems architecture, and technical projects index for AI models, search crawlers, and agents.

## Overview

- [dawidczerwinski.pl](https://czerwinskidawid.pl): Primary website and interactive horizontal portfolio hub.
- [GitHub Profile](https://github.com/Gzyms69): Open-source repositories and engineering implementations.
- [LinkedIn Profile](https://www.linkedin.com/in/dawid-czerwi%C5%84ski-baa6b5149/): Professional background and career experience.
- [Contact](mailto:kontakt@czerwinskidawid.pl): Official email address for software and engineering inquiries.

## Flagship Systems & Engineering Projects

- [BusOS - Spatial Data & Transit Intelligence Engine](https://czerwinskidawid.pl/#projects/busos): 16-stage GIS spatial ETL pipeline ingesting real-time GTFS feeds from 85+ municipal transit authorities with GeoPandas, Uber H3 spatial indexing, and Huff gravity attraction models ($K=0.005$).
- [JobHunt - Autonomous Recruitment & Application Pipeline](https://czerwinskidawid.pl/#projects/jobhunt): Distributed scraping pipeline covering 28 portals with WAF evasion (JA3/JA4 fingerprinting) and sub-second deterministic LaTeX CV compilation ($<0.85s$, 0 AI tokens).
- [WikiGraph Lab - 3D Knowledge Graph Visualizer](https://czerwinskidawid.pl/#projects/wikigraph): Split-storage graph engine combining Neo4j GDS topology, SQLite BM25 FTS5, and 3D WebGL point cloud rendering with Golden Angle distribution.
- [Katalog - Enterprise Multi-Tenant B2B Platform](https://czerwinskidawid.pl/#projects/katalog): Next.js 16 Turborepo monorepo with Puppeteer to FFmpeg WebM video generator and Cookie-based Hydration Skeletons ($CLS = 0.000$).
- [ROMHub N64 - Embedded WebAssembly Emulation Engine](https://czerwinskidawid.pl/#projects/romhub): Client-side Nintendo 64 emulator compiled from C++ to WebAssembly with WebGL 60 FPS rendering, AudioWorklet synchronization, and IndexedDB cartridge persistence.
- [dawidczerwinski.pl - Horizontal Portfolio & 2.5D Systems Graph](https://czerwinskidawid.pl): 4-level horizontal 100vw/100dvh viewport, 60 FPS Direct DOM tooltip tracking, D3-Force 4-quadrant orbital clustering, 3D Simplex noise, interactive SVG Mermaid and KaTeX documentation reader, and Swiss design system.
- [LeadFinder - Distributed OSINT Discovery Engine](https://czerwinskidawid.pl/#projects/leadfinder): Asynchronous reconnaissance worker using Python FastAPI, Playwright Stealth, and NASK jitter evasion ($1.5-3.5s$).
- [DeepSeek Folder Organizer - Local LLM Pipeline](https://czerwinskidawid.pl/#projects/deepseek-organizer): Userscript injecting custom hierarchy and colored tag management into DeepSeek AI web interface with 100% LocalStorage privacy.
- [Agent Setup Bundle - Deterministic Multi-Agent Harness](https://github.com/Gzyms69/agent-setup-bundle): Production agentic framework with 12 core directives (PRAR, Zero-Speculation), 30+ progressive disclosure skills, and 11 MCP servers.

## Complete Specifications & Resources

- [Full Architecture Blueprint (llms-full.txt)](https://czerwinskidawid.pl/llms-full.txt): Complete consolidated technical documentation, schemas, and READMEs for all 9 systems.
- [XML Sitemap](https://czerwinskidawid.pl/sitemap.xml): Machine-readable index of all portfolio endpoints.