McLaren have appointed Zak Brown to the role of executive director after Ron Dennis stood down as chairman and CEO.
Long-serving boss Dennis confirmed that he had been forced to resign by fellow shareholders at a meeting last Tuesday, with Brown now coming on board as part of a new management structure.
Brown - the founder of motorsport marketing agency Just Marketing International (JMI) - is set to play a key role in a "restructuring programme that will align the group's commercial and strategic operations relating to achieving success in Formula One".
"I'm immensely proud to be joining McLaren Technology Group," Brown said in a statement.
"I have the utmost respect and admiration for what the business has achieved to date, and I look forward to contributing to the next important phase in its development.
"Having worked closely with McLaren for many years, I've been struck by the talent and ambition of the entire workforce, and I very much look forward to complementing the business's many existing strengths, and building on them to drive future success in everything we do.
"Best of all, in my new role I'll be able to combine my absolute passion with my unparalleled area of expertise - respectively motorsport and marketing - while ensuring that the two stay totally aligned."
Brown and JMI helped McLaren secure sponsorship deals with the likes of Johnnie Walker, Hilton and Chandon.