The person behind the systems
Curiosity is
the common thread.
Youlong Ma / Always learning
I like the part where
the pieces start to fit.
I’m Youlong, a full-stack engineer drawn to challenging problems and the work of turning them into robust software.
My work spans AI-driven education platforms, compiler development, and backend systems. I enjoy moving between the details of an implementation and the larger system it belongs to.
I’m always exploring emerging technologies and sharing what I learn. That curiosity runs through the projects here: agents that teach, tools that retrieve, and systems that make information useful.
A working toolkit
Tools, in context.
The languages, frameworks, and infrastructure I connect to build things.
Frontend
- HTML
- CSS
- Tailwind
- JavaScript
- TypeScript
- React
- Next.js
Backend
- Node.js
- Java
- Spring
- Go
- C++
- MySQL
- PostgreSQL
AI & data
- Python
- D3.js
- LangChain
- LangGraph
- OpenAI
Infrastructure & tools
- Docker
- AWS
- Git
- Kubernetes
- Atlassian
- Datadog
- Postman
- Terraform
Explore my skill connections
An interactive map of the tools I work with. Drag a node to explore its connections.
Read the connections as text
- yma2022 → Web
- Web → CSS
- CSS → Bootstrap
- CSS → TailwindCSS
- Web → HTML
- Web → JavaScript
- JavaScript → TypeScript
- JavaScript → Node.js
- JavaScript → Next.js
- JavaScript → D3.js
- JavaScript → Three.js
- JavaScript → TopoJSON
- JavaScript → React
- JavaScript → React Native
- JavaScript → NPM
- JavaScript → Yarn
- yma2022 → Databases
- Databases → SQL
- SQL → PostgreSQL
- SQL → MySQL
- Databases → NoSQL
- NoSQL → MongoDB
- NoSQL → Firebase
- yma2022 → Tools
- Tools → Docker
- Tools → Kubernetes
- Tools → AWS
- Tools → CI/CD
- Tools → Unix/Linux
- Tools → Git
- yma2022 → DevOps
- DevOps → Prometheus
- DevOps → Metricbeat
- DevOps → Elasticsearch
- DevOps → Fluentd
- DevOps → Kibana
- yma2022 → Data Analysis
- Data Analysis → NumPy
- Data Analysis → Pandas
- Data Analysis → SciPy
- Data Analysis → Scikit-learn
- yma2022 → AI
- AI → PyTorch
- AI → Tiktoken
- AI → OpenAI
- AI → LangChain
- AI → LangGraph
- AI → LangChain4j