Pros
The developer infrastructure at Zalando is the best I have ever worked with. The CI/CD platform in particular makes it easy to build and deploy applications to Kubernetes clusters running on AWS. There is little to no red tape, and teams are (within guidelines) permitted to choose the technology they deem most appropriate for the task at hand. The work life balance is great and I have never been pressured to work out of hours or weekends in my time here. They provide way more than average holiday days, and are flexible with both working hours and locations. I highly recommend Zalando as a place to work, have fun, and learn lots from extremely talented colleagues.
Cons
The organisational structure is regularly influx, and priorities can shift and change with little notice.