Mickley, who currently serves as business development director at the firm, will return to his role with immediate effect after Ali Khwaja opted to step down as chief financial officer.
Meanwhile, SafeCharge has also confirmed Ziv, currently serving as chief operating officer and managing director of the SafeCharge Bulgaria division, is to take on the role of group chief operating officer from January 1.
Ziv joined SafeCharge in 2007 and has held a number of senior roles during his time with the company.
SafeCharge chairman Roger Withers said: “I and the rest of the board look forward to Yuval joining the board.”