As the owner of Walker Motorsports, Ltd. he fielded multi-car teams in 414 races in IndyCar, Firestone Indy Lights and Formula BMW and worked with drivers including Gil de Ferran, Scott Goodyear, Christian Fittipaldi, Sarah Fisher, Alex Tagliani, Will Power, Simon Pagenaud and Paul Tracy. The Walker Motorsports team made Indianapolis 500 history in 1991 by fielding an entry for Willy T Ribbs, who became the first African-American to qualify for the race.
The 68-year-old who originally hails from Scotland has most recently been acting as general manager for Ed Carpenter Racing in the IZOD IndyCar Series, helping to lead the team to a victory last September at Auto Club Speedway in the team's rookie season.
"While we will miss Derrick being part of Ed Carpenter Racing, we are excited about his new opportunity to join the leadership team at IndyCar," said Carpenter after the announcement. "He really was the architect of our team and helped us establish a very strong foundation that will continue to lead future successes.
"Although we wish him well, we will enjoy our last month working together - and if all goes according to plan, we will drink milk together at the end of the month before he moves on to his new responsibilities!"
"I am going to the dark side, and happily so," quipped Walker. "I've been around long enough to see the good, bad and the ugly," he added.
"I have had the opportunity to participate in the business of professional racing my entire life, and I have gained valuable experience from many different angles," said Walker.
"Leading the operations and competition aspects of IndyCar is a perfect place to leverage my experiences and relationships to help ensure that IndyCar racing is exciting and engaging for our fans, that our drivers and owners are able to showcase their talents through our events, and that our technical partners are able to use our racing platform for innovation and development."