Senior Full-Stack Engineer focused on AI-assisted engineering, developer tools, and real-world software systems.
Currently at PayPal, working on FinTech customer operation, identity verification, content service, payment migration tooling, and API behavior research.
20 years of software engineering experience across FinTech & Payments, Internet Platforms, Telecom Systems, and AI Applications.
- How AI agents can understand large codebases before modifying them
- How payment migration work can be made measurable, reproducible, and verifiable
- How planning, execution, evaluation, and evidence can become a normal part of AI-assisted development
- How developer tools can reduce repeated manual work without hiding engineering judgment
π Open to opportunities
π Shanghai, China
π https://erishen.cn
Multi-Agent workflow framework for AI-assisted software development.
- Architect / Developer / Reviewer collaboration
- Task planning, execution, evaluation, and evidence pipeline
- Agent Engineering practices
Unified LLM infrastructure toolkit built with LangChain and LiteLLM.
- OpenAI / Claude / Gemini / DeepSeek integration
- RAG, Tool Calling, multi-model routing
- Streaming APIs, evaluation, and cost tracking
Demo: https://langchain-llm-toolkit.onrender.com/docs
AI-powered code analysis platform.
- Serena AST integration with MCP dual-strategy (security boundary)
- Automated code review with rule-first AI prompts
- Docker environment generation
- Three-level cache with read-backfill auto-warming
LangGraph-based CSV analysis agent exploring structured data decomposition, execution, and summarization through agent workflows.
AI-powered investment research platform.
- Portfolio management and market signal scanning
- AI-assisted research workflow
Related: lobster β AI tool server with Function Calling architecture
Demo: https://asset-lens-1.onrender.com
Modern Next.js 15 AI chat application.
- Vercel AI SDK with streaming responses
- RAG document retrieval with local vectorization
- Multi-turn conversation management and persistence
Demo: https://chat.erishen.cn
Full-stack scaffolding and code generation CLI for Next.js, Express, GraphQL, MySQL, and TypeScript.
NPM: https://www.npmjs.com/package/nsgm-cli
Lightweight production-grade React SSR framework with Webpack 5, Docker deployment, and three rendering modes.
PayPal β Full Stack Engineer (2024 - Present)
FinTech customer operation, identity verification, content service, payment migration validation, and API behavior research.
Trip.com (Ctrip) β Senior Frontend Engineer (2017 - 2024)
International content platforms, SSR/SEO, and frontend transformation.
Enterprise Software & Telecom β Software Engineer β Technical Manager (2005 - 2017)
Enterprise systems, mobile apps, embedded web, and platform engineering.
- Website: https://erishen.cn
- Email: [email protected]