Øfsthus will replace Ove Fredheim who has been assigned new responsibilities within the group, said Telenor.
"[Øfsthus’s] vast technical background and solid understanding of the Serbian telecom market makes me confident that she will continue to strengthen Telenor's position," said Sigve Brekke, Telenor’s CEO.
"Her background from several Telenor markets has given her valuable international experience, an additional asset to Telenor Group's executive management team," he added.
Øfsthus has served as chief technology officer of Telenor Serbia since September 2012. She was also CTO of Telenor’s operations in Montenegro and has held various positions at its businesses in Germany, Thailand and Norway since joining the group in 1998.