Bradley L. Tesh, 51, a senior Smithsonian Institution network engineer from 1999 to 2010 who helped oversee the organization’s computer system affecting more than 7,000 users from New York to Panama, died June 15 at his home in Swansboro, N.C. He had complications from hypertensive cardiovascular disease.

The death was confirmed by his wife, Suzanne Snell Tesh.

Mr. Tesh joined the Smithsonian in 1986 as network manager of the National Museum of American History. His design for the Smithsonian’s first structured cabling plant became a model for the extension and growth of the institution’s computer network.

Starting in 1999, as a senior network engineer in the Smithsonian’s Office of Information Technology, he helped oversee the strategic planning of all network projects within the institution.

Bradley Lynn Tesh was a native of Camp Lejeune, N.C., where his father was serving on a Marine Corps assignment. He was a 1981 graduate of the University of Nevada at Reno and received a master’s degree in anthropology from George Washington University in 1984.

He was a member of the French-speaking Catholic parish of Washington known as La Paroisse Saint Louis de France. He and his wife sang in the choir. He moved full time to Swansboro from Bethesda in 2010.

Survivors include his wife of 27 years, Suzanne Snell Tesh of Swansboro; a sister; and two brothers.

— Adam Bernstein