Olaf is Global CTO of the OLX Group. The OLX Group is a world leader in online classifieds active in 45 countries, serving +350 MIO unique users every month. Olaf is an advocate of lean product development, open source and cloud computing. He is building high traffic web applications since more than a decade and previously held positions within eBay and Siemens. As an Advisor and Board Member he also helps startups to grow.