BAR (2003–2005) Komatsu began his career in motorsport in 2003 as a tyre engineer for
British American Racing, and stuck with the Brackley team for two seasons.
Renault/Lotus (2006–2015) In 2006 he moved to
Renault to work as a performance engineer, starting out on the test team before being promoted to the race team working with drivers such as
Nelson Piquet Jr.,
Romain Grosjean and
Vitaly Petrov. After
Mark Slade departed at the commencement of the 2011 season he was promoted to Petrov's race engineer, working with him for one year before partnering up with the returning Grosjean for 2012. Grosjean and Komatsu formed a close bond, scoring nine podium finishes and fighting for race wins at the end of 2013. After a disappointing 2014, Komatsu was promoted to chief race engineer at Lotus, helping Grosjean and the Enstone team score a podium at the
2015 Belgian Grand Prix. driving the
Haas VF-24 at the
2024 Chinese Grand Prix Komatsu became team principal for Haas on 10 January 2024, after the departure of
Guenther Steiner. In his first season as team principal, Haas finished seventh in the
2024 Constructors' Standings. ==Personal life==