Meetups are one of our favourite events at trivago. They give us the opportunity to learn, share knowledge & experience, as well as network with fellow professionals and enthusiasts in the industry and community.
You do not run a successful, stable software project over several years without some amount of automated testing. If several dozens of developers are working on the same code base, the need for test automation becomes even greater. After all, their changes might have unintended effects on other people's code, or on certain edge cases that will not be noticed until the changes go live — and maybe not even then.
You know those bugs, like, those. Where the application state dances around you like a crazed Polynesian fire dancer. Where changing the sorting order of a search in London reverts the result list back to Paris.... Seriously? Unfortunately, a lot of us are specialists in dealing with this kind of bug.