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chriswu727/README.md

Hi, I'm Yichen

Production AI + Full-Stack Engineer

I build AI systems end to end—computer vision, generative AI, agent tooling, and the full-stack systems around them—with reliable workflows and clear failure handling in production.

What I'm Building

  • At DaoAI Robotics, I work on production video analytics and generative AI platforms, spanning workflow validation, multi-object tracking, multimodal product workflows, and persistent asynchronous job orchestration.
  • In open source, I build AI agents and developer tools whose work can be inspected, reproduced, and verified.

Selected Systems

  • Loop Agent — Autonomous software delivery from a product brief to a verified implementation, with reviewable artifacts, Git changes, and a replayable receipt.
  • Argus — Evidence-first MCP QA for web and native macOS apps, with clean-state reproduction and verified bug replay in CI.
  • Sibyl — Web research for AI agents with keyless multi-source retrieval, passage-level evidence ranking, source clustering, and citation-backed reports.
  • Scalable Starter — A production-shaped Next.js and FastAPI foundation with Postgres, Redis-backed workers, observability, and Kubernetes deployment.
  • Agent Duet — Local Codex and Claude Code collaboration with independent review, finite rounds, machine checks, and guarded Git application.

Technical Focus

  • Languages: Python, TypeScript, JavaScript, SQL
  • AI / ML / CV: LLM and VLM APIs, agent and tool orchestration, PyTorch, NumPy, SciPy, OpenCV, multi-object tracking, OCR
  • Backend & Data: FastAPI, Celery, asyncio, SQLAlchemy, Pydantic, Redis, PostgreSQL, WebSockets
  • Frontend & Media: React, Next.js, Tailwind CSS, FFmpeg
  • Cloud & Delivery: AWS, Docker, Kubernetes, Helm, GitHub Actions
  • Testing: pytest, Playwright, Vitest

Education & Certifications

  • MS in Computer Engineering — Northwestern University
  • BS in Computer Engineering — University of Illinois Urbana-Champaign, Dean's List
  • AWS Certified Solutions Architect – Associate and AWS Certified Cloud Practitioner

Connect

Portfolio LinkedIn Resume

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  1. sibyl sibyl Public

    Web research for AI agents. Keyless multi-source retrieval ranks passages and clusters syndicated copies; an optional configured model produces citation-backed reports with explicit insufficiency s…

    Python 1

  2. argus argus Public

    Evidence-first MCP QA for web and native macOS apps. Re-confirms certified findings from clean reloads and replays verified bugs in CI.

    Python 1

  3. scalable-starter scalable-starter Public template

    Production-grade, platform-agnostic full-stack skeleton: Next.js 16 + FastAPI, built to scale on Kubernetes. Zero business logic.

    Python 1

  4. loop-agent loop-agent Public

    Autonomous software delivery from product brief to verified implementation. Loop plans, builds, tests, and repairs in a task workspace, then hands back reviewable artifacts or Git changes with a re…

    Python 1

  5. agent-duet agent-duet Public

    Local Codex + Claude Code collaboration: one writer, one independent reviewer, finite rounds, subscription-backed CLIs, no API keys.

    JavaScript 1