I design, build, and evaluate AI tools for developers using NLP techniques, while prioritizing the usefulness and usability of the tools, as a software engineering researcher with expertise in human-computer interaction (HCI) and natural language processing (NLP). More specifically, I (1) conduct empirical studies to understand programmers’ needs, (2) build and train machine learning models based on the insights gained from the studies, (3) use the ML models to build tools for programmers, and (4) evaluate them using HCI methods.