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yfe404/README.md

yfe404: browser infrastructure and applied AI, spanning Chromium internals, CDP, agent runtimes, model training, and reliability

Browser & Agent Infrastructure Engineer

I build reliable browser systems that let AI agents access, navigate, and act on the web.

Browser Infrastructure AI Agents Applied Reverse Engineering ML Systems


What I build

  • Browser infrastructure: I build and harden scalable cloud and headless browser systems across authentication, state, identity, network behavior, isolation, observability, and failure recovery.
  • Agent execution: I develop runtimes, sandboxes, browser skills, developer APIs and SDKs, and Model Context Protocol (MCP) tools. I evaluate deterministic automation and LLM-driven workflows for task success, latency, cost, and reliability.
  • Browser internals and applied reverse engineering: I work across browser, renderer, JavaScript, graphics, networking, TLS, PDF, and DevTools layers. I also analyze undocumented web and mobile protocols and turn the findings into production systems.
  • Applied AI and data systems: I train and evaluate machine learning models, fine-tune large language models (LLMs), and build data-intensive systems for research and production workloads.

Technical range

Languages: Go · TypeScript · Python · C++

Browser and automation: Chromium Internals · Blink · V8 · Skia · PDFium · BoringSSL · CDP · Playwright · Puppeteer · Browser Automation · Web Scraping

AI and data: Machine Learning · Model Training · LLM Fine-Tuning · AI Agents · Computer Use · Agent Evaluation · Data Pipelines

Systems: Distributed Systems · Linux · Docker · Observability

Private work

Most of my recent work is private. I can discuss the problems, my role, and the outcomes. I keep client names and proprietary implementation details confidential.


Browser infrastructure · Agent platforms · Applied AI systems
hackme.oku2l@simplelogin.com

Pinned Loading

  1. proxy-mcp proxy-mcp Public

    MCP server that runs an explicit HTTP/HTTPS MITM proxy

    TypeScript 9 2

  2. frida-mcp frida-mcp Public

    MCP server for Frida 17 dynamic instrumentation

    TypeScript 14 2

  3. web-scraper web-scraper Public

    Intelligent web scraping Claude Code skill with automatic strategy selection and TypeScript-first Apify Actor development

    TypeScript 79 17

  4. frida-mcp-skills frida-mcp-skills Public

    AI Skills companion for using frida-mcp

    JavaScript 2 1

  5. ghost-browser ghost-browser Public

    Python

  6. zetetic zetetic Public

    Epistemic-discipline mode for Claude Code — separate observation from inference; never state an unverified cause as fact. Sibling to caveman.

    JavaScript