Paul R. Gradl is a principal engineer and subject matter expert at NASA Marshall Space Flight Center. He leads several projects across NASA for additive manufacturing of liquid rocket engine components supporting various development and flight programs since 2004. He is an Associate Fellow of AIAA, recipient of “Engineer of the Year” by AIAA in 2022, serves as an industry advisor in additive, and was named one of “The Most Influential Personalities of Additive Manufacturing in 2020.” He holds a master's in engineering, MBA, and is a PhD candidate at Delft University of Technology.