Youlong Ma

Youlong Ma

Full-Stack Engineer & AI Developer

I'm Youlong Ma, a self-driven full-stack developer eager for new opportunities to grow and make a meaningful impact. I thrive on tackling challenging problems and building robust solutions.

Over the years, I've worked with Java, Python, Go, React Native, TypeScript, AWS, PostgreSQL, and gRPC—delivering scalable software for AI-driven education platforms, compiler development, and various system architectures.

I'm always exploring emerging technologies, sharing best practices, and pushing myself to excel. If you're looking for a motivated engineer who loves solving complex issues, let's connect!

Projects

Projects I worked on. Each of them containing its own case study.

AI Stock Agent

A web-based stock analysis tool that fetches real-time price data, news, and financial metrics for any publicly traded company, then uses an AI agent to generate comprehensive investment insights via a Flask web interface.

PythonFlaskLangChainOpenAIPolygon.ioBootstrap

Agentic Doc Retrieval

An agentic LLM-powered search tool that finds FDA-regulated product recalls since 2009 from natural language queries. Processes recall documents with sub-second response time using RAG and LangChain agent tooling.

PythonLangChainLangGraphOpenAIRAGVector Embeddings

EduAgent

A multi-agent education system where an Analyst and Planner agent debate a personalized learning path, generate a structured syllabus, and an Instructor agent teaches each section interactively—with progress persisted to SQLite and covered by 99 automated tests.

PythonLangGraphLangChainOpenAISQLitePydanticPytest

Ask Eddie

Contributed to its end-to-end system design—integrating AI language models, data-driven insights, and scalable backend services to deliver expert-level counseling at a fraction of traditional costs.

React NativeNode.jsPostgreSQLNativeWindOpenAI

Experience

Professional experience that I have accumulated over several years.

Skills

HTML
CSS
Tailwind
JavaScript
TypeScript
React
Next.js
Node.js
Java
Spring
Go
C++
MySQL
PostgreSQL
Python
D3.js
LangChain
LangGraph
OpenAI
Docker
AWS
Git
Kubernetes
Atlassian
Datadog
Postman
Terraform