Nathan is a senior research scientist at LANL and is the Co-Executive Director for Technical Operations of the USRC. His research focuses on resilience and reliability of supercomputers, particularly from a hardware and systems perspective. Nathan joined LANL in 2004 after completing his PhD in computer engineering from Clemson University with a focus on parallel computing. He was a founding member of the DOE Resilience Council, an early technical organization which shined a light on the need for more reliable software and hardware at the extreme scales which DOE was targeting. Nathan collaborates with several universities and mentors junior staff, students, and leads a team of researchers.