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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 InfrastructureAI AgentsApplied Reverse EngineeringML 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-mcpproxy-mcpPublic

      MCP server that runs an explicit HTTP/HTTPS MITM proxy

      TypeScript 9 3

    2. frida-mcpfrida-mcpPublic

      MCP server for Frida 17 dynamic instrumentation

      TypeScript 19 3

    3. web-scraperweb-scraperPublic

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

      TypeScript 86 20

    4. ghost-browserghost-browserPublic

      Python

    5. jsvmjsvmPublic

      A small, fast V8 runner for one-shot JavaScript.

      C++ 2 2

    6. agiagiPublic

      Personal collection of agent skills, pi extensions, and modules.

      TypeScript