After selling his first startup, Ronald Cummings-John is now scaling up Global App Testing, a VC-backed, crowdsourced testing platform with over 25,000+ professional testers globally. Global App Testing was selected as one of the fastest-growing tech companies in the UK. His passion for quality assurance has taken him around the world, and he has worked with QA and product teams from top companies including Etsy, Microsoft, King, Spotify, and eBay. Ronald is co-author of the the book, "Leading Quality: How Great Leaders Deliver High-Quality Software and Accelerate Growth."