With a team of front-end specialists at De Voorhoede we built a trading site for heavy machinery: Tradus. This site went from initial concepts to market leading in Europe within 6 months. At which time it contained about half a millions objects for trade. Tradus is an initiative of the classifieds experts OLX. The initial site was built in Drupal 8 and has since been gradually migrated to a services based system. Handling the high volume and high traffic in its early existence has been challenging but successful.