Eric Liu interned as a graphic designer at MicroMetrics, a tech startup that develops software to help brick-and-mortar businesses collect customer data through surveys. During his internship, Liu worked on the design of MicroMetrics' web and mobile apps, call-to-action graphics for in-store iPad kiosks, and marketing materials. He gained experience in Agile development methodology and learned the importance of clear communication in collaborative team environments compared to school projects. Overall, the internship provided Liu with valuable real-world experience in user-centered design for digital products at a small startup.