Before his deputy director tenure, Sjoberg started his space career in 1942 with the National Advisory Committee for Aeronautics.

As a member of the Langley Memorial Aeronautical Laboratory until the end of the 1950s, Sjoberg worked in aerodynamics and primarily conducted research.

For his flight operations career, Sjoberg joined the Langley Research Center and Space Task Group in 1959.

[2] For his post secondary education, Sjoberg graduated with a Bachelor of Science degree from the University of Minnesota in 1942 and specialized in aeronautical engineering.

[4] As part of their Langley Memorial Aeronautical Laboratory, Sjoberg focused on aircraft stabilizers during World War II in the Flight Research Division.

[4] As part of the NACA High Speed Flight Station, Sjoberg focused on several x-planes by Bell Aircraft and the Douglas D-558 until the end of the 1940s.

[10] During this time period, Sjoberg began his thirteen-year flight operations experience when he joined the Langley Research Center in 1959.

[11] After completing his four-year coordinator tenure at Langley, Sjoberg started out as an assistant for the Manned Spacecraft Center in 1962.