Mister Spex, which claims to be Europe's leading online optician, has appointed Maren Kroll as its new chief of human resources for the entire company. In addition to supporting the online optician's expansion in Germany and abroad, she will be a member of the executive board and report directly to Dirk Graber, chief executive of Mister Spex. Kroll has previously worked as vice president of human resources at Harry's Inc., located in New York, London and Eisfeld, with 900 employees. She was responsible for that company's expansion in Europe and set up its structure for internal and external communications and management. Before Harry's, she worked for Zalando, the big European e-tailer based in Berlin.