Jonathan Aldrich is an Associate Professor of the School of Computer Science. He does programming languages and software engineering research focused on developing better ways of expressing and enforcing software design within source code, typically through language design and type systems. Jonathan works at the intersection of programming languages and software engineering. His research explores how the way we express software affects our ability to engineer software at scale. A particular theme of much of his work is improving software quality and programmer productivity through better ways to express structural and behavioral aspects of software design within source code. Aldrich has contributed to object-oriented typestate verification, modular reasoning techniques for aspects and stateful programs, and new object-oriented language models. For his work specifying and verifying architecture, he received a 2006 NSF CAREER award and the 2007 Dahl-Nygaard Junior Prize. Currently, Aldrich excited to be working on the design of Wyvern, a new modularly extensible programming language.