Donald Sawyer is the Director of Data Engineering at Improving. He has many years of experience applying software engineering skills like testing, scrum, UX, and architecture design, to data science and engineering. He also built and has taught the course, "Big Data Engineering and Architecture" at the University of Minnesota and St. Cloud State University for the past five years. He has built numerous TDDE frameworks for clients and has given many talks on the quality side of data engineering.