Donna Post Guillen

Donna Post Guillen is a Distinguished Researcher at Idaho National Laboratory (INL), where she leads the Materials Performance and Modeling Group. She has more than 40 years of research and engineering experience, including 32 years at INL. She began her career in aerospace and defense, where she worked on aerobrakes for a Mars lander concept. At INL, she has led research on nuclear materials, waste heat recovery, and advanced manufacturing. Her work combines computational fluid dynamics and heat transfer modeling with the design and additive manufacturing of components for energy systems. Dr. Guillen serves on technical committees and organizes symposia for ASME and other professional societies. She has mentored more than 60 postdoctoral researchers, students, and interns and received a 2026 Mentor of the Year Award from the U.S. Department of Energy’s Workforce Development for Teachers and Scientists program.