EE's chief commercial officer Marc Allera is to replace chief executive Olaf Swantee who will step down following BT's acquisition of the telco company.
The deal, which is in the final stages of approval, will see EE become part of the BT Group, creating a new line of business, which will be headed up by Allera.
Swantee said that he is stepping down from the role to "pursue new opportunities", although his new role has not been announced.
"I am immensely proud of the past four and a half years, creating, launching and growing EE to the exciting business it is today," Swantee said. "It has been a period of great success, and I’d like to thank all of our employees for the incredibly hard work and support they have shown to me, as well as the business, to help achieve this.
"To leave EE is probably the hardest decision of my career, but I feel the time is right for me to handover for the next exciting chapter of EE’s incredible journey. I wish Marc all the success for the future.”
Under his watch Swantee, who joined EE from Orange in France, has guided the telco provider into broadband and pay-TV and has invested in 4G technology.
Allera meanwhile has held senior leadership roles in the mobile industry for more than 15 years. He has been with EE for the past 4 years, and helped to drive the fast uptakes of 4G at the company.