In the past two years at SoundCloud, we've shipped a brand new iPhone and iPad app and completely transformed the way we work. The team scaled from 3 to 10 developers, we've moved away from pull-requests and rely heavily on automated testing. As SoundCloud grew, its backend infrastructure got more complex with the addition of many microservices. Ensuring our apps to work with these microservices in production is key to SoundCloud's continuing success. That's why we're building custom continuous integration solutions for our mobile apps.