* Turn up to job. Nice people, good desk, good canteen. Benefits good.
* Work is interesting - working on cutting edge, dynamic web experiences that are changing the way we interact with people.
* Solved a knotty engineering problem today. Was very pleased, boss was impressed.
* Shipped product today. New sprint starts tomorrow. No defects!
The actual implications of any one feature, the borders between personal data and pure engineering problems blur. Your effort is only a small part of hundreds of effort-hours taken to ship and maintain a product. The decisions about where the lines are drawn were taken months or years ago by people who may or may not be at the company and who were also probably just trying to solve the problem that was in front of them.
You, the engineer, are never sat alone in a room with a user story that breaks GDPR for a product that is fully compliant. The future of the product never rests with you and only you.