I would like to quit my current job as a software developer. I'd like to do it gracefully, and reading online it see advice that you shouldn't tell anyone before you tell your boss or supervisor. And my personal experience has been that when people leave they just disappear without any prior notice. A slack message in the morning either saying "today is my last day" or "yesterday was my last day" and they are gone. So it seems like the process is rather secretive.
However I don't think I have a boss or supervisor. I have teammates some of them are senior to me and I look to them for advice or help, but they aren't in control of my employment. Above my team there is the technical lead team and they guide the project and make high level decisions, but I also don't think any of them are in control of my employment. There are company owners, but there are over 200 employees, I don't think that they really handle resignations.
It seems like the many roles that a boss or manager would have are split between several people or teams.
My next bet would be a "Human Resources" department, but we don't have a single department for that, there's a recruiting team that handles hiring people (it's members rotate in and out of other teams) and there's a professional development team.
I reread my employment contract and the company directory but neither was all that helpful. My contract says I must inform "the company" rather than a person or role.
I'm not sure how I can politely and gracefully find the right person to inform, without announcing that I'm leaving. Is there a way to handle this sort of situation?
For the extent to which it matters I live in Germany, but my employer operates in several countries in Europe with offices in two.