My name is Pingfan Hu, a PhD candidate in Systems Engineering at George Washington University, advised by Professor John Helveston. My work focuses on data science, quantitative modeling, and software development in sustainable transportation. I build software and analytical models that integrate UI/UX, web frameworks, and databases, with expertise in , Python, and PostgreSQL. I develop websites and web applications using Quarto and Shiny. I am proficient in both hands-on programming and LLM-assisted development using tools such as ChatGPT and Claude.