// About Me
Hello,
I'm Ethan Liu
I build practical software and AI systems with an emphasis on reliability, usability, and real-world
value.
My background spans backend engineering, developer tooling, full-stack applications, retrieval systems,
and production-minded machine learning workflows.
Track One
Software Engineering
Browser-based tooling, backend systems, integration work, mainframe-adjacent engineering, C#, Python,
Java, and full-stack application delivery.
Python
C#
C++
Java
Node.js
z/OS
Track Two
Data Science
Retrieval pipelines, embeddings, local LLM workflows, AI tooling, LoRA training, vector search, and
production-minded applied ML systems.
RAG
LoRA
Qdrant
LangChain
Ollama
Cosmos DB
