Math can change the world. Case in point: Ryan Walker. As a mathematician and analyst, Ryan has made a significant impact on the Casetext team and is helping transform the way legal research platforms function. Beginning as a data scientist with the company in 2015, Ryan did most of the engineering for CARA, Casetext’s pioneering brief analysis engine. Shortly thereafter, Ryan was promoted to Vice President of Data Science, and later to the Chief Technology Officer. Ryan received his Ph.D. in mathematics from the University of Kentucky and has also worked as a quantitative marketing analyst developing mathematical models for health care and a machine learning engineer. He joined Castext, a small start-up at the time, to help build a platform for affordable, open legal research.