> The counterpoint to this is if you aren't specifically assigned tasks you're basically expected to go through the backlog to hunt for things to do. In most companies the backlog is never empty and so you don't really get any time for any of these ancillary tasks.
Yea, instead of thumb twiddling, just go fix some bugs! Every company I've ever worked at had 1. more bugs than could ever be fixed and 2. had an incoming bug rate faster than the team's fix rate, therefore the bug count perpetually grew. Some of these could be long standing bugs that annoy actual users that just perpetually get ignored by the company. Go fix one and make someone's day.
There is no such thing as a Software Engineer with nothing to do. When I read HN comments from software engineers who say things like "yawn, my work fits into about 6 hours a week, and the remaining 34 hours I just take it easy, maybe work on a side project, maybe horse around on Facebook..." my mind boggles! Where do you work where there are no bugs in the backlog to fix??
If there are really no bugs to fix, maybe look into cleaning up the code base. Turn a few compiler warnings on or run the static analyzer and go looking for trouble. Re-factor that gnarly part of the code that's always tripped up new employees. Add unit tests. Add integration tests. Automate some part of the build. Maybe work on a nicer bug dashboard.