Wolfgang joined the Guardian in April 2013. From 2008 to early 2013, he was the Editor-in-Chief of Zeit Online in Germany.

During the five years that Wolfgang led Zeit Online, its unique visits more than quadrupled while Zeit Online's annual revenue grew by more than 280 percent. Zeit Online has won Germany's most important awards for online journalism and was the first German newsroom to win the American ONA's Online Journalism Award for its data journalism. In 2011, Wolfgang was named Germany's chief editor of the year.

Prior to joining Zeit Online, Wolfgang worked in California for eight years, covering the media and technology industries of Silicon Valley for Germany's newspaper Die Welt and broadcaster ZDF. He is a Vice President of the Global Editors Network in Paris.