Who made the sojourner?

The Sojourner rover was developed by NASA's Jet Propulsion Laboratory (JPL) as part of the Mars Pathfinder mission. It was designed and built by a team led by project manager Brian Muirhead and chief engineer, Chris Jones. The rover was launched on December 4, 1996, and became the first successful Mars rover when it landed on the Martian surface on July 4, 1997.