Of the myriad challenges in scaling up an engineering organization, onboarding new employees is probably the least well-understood. There are relatively common solutions for large-scale recruitment, finance and administration, but onboarding remains a question that many organizations struggle with. At Wix we've been struggling with massive scaling challenges: over the last two years our company headcount has doubled itself, and we had to learn to cope with the influx while maintaining velocity. In this talk we'll share with you the story of how we set up Wix Academy, an engineer-driven training organization, the solutions we've developed (and still are!), and what we've learned in our first year of operation. A presentation given at Velocity 2016 in Amsterdam, The Netherlands (previously at BuildStuff 2015 in Vilnius, Lithuania).