Ask: How to increase my value as a software engineer?

Have a vision on what kinds of skills you'd want to acquire, work only 9-to-5 and then you'll (more likely) have time energy for hobbies and self-development. Look for job ads which you aren't qualified to apply yet and check that what are you lacking.

I'm coming from an European perspective, if I have to work 1 hour extra on Tuesday then I'll leave one hour earlier on Wednesday. Or at least balance it out in the long term.

You could augment your engineering experience with subject matter expertise. Finance, Supply Chain, Manufacturing, something like that!

Practically, for me, this means a MicroMasters on edX. For some, it'll be a Nanodegree on Udemy. For others still, it's a professional certificate or three. Whichever route you find makes most sense to you.

Be more productive, work over time, be first in and last out. Be helpful and happy when you get extra work.