https://www.tumblr.com/instagram-engineering/125356491637/scaling-the-datagram-team

We operate a very lean team – only 20  engineers supporting Search, Explore, Trending, Account Suggestions, and Data Infrastructure – and have created a unique model that gives engineers end-to-end impact while working cohesively with the product and infrastructure teams. This post is about how we evolved into our team structure and lessons we hope you can also apply to your team as you scale.