20M USD for 50 employees? ~400+k per employee is nuts!

There are European engineers working at private companies for less 20% (1/5th) of that - if even that! They aren't worse than their American counterparts. Signal could increase their team sizes by at least 30%, maybe even 50% if they hired engineers and other employees from Europe.

If signal paid 100k for European engineers to work on opensource software, mate, they'd have absolute no problems retaining them. I personally don't know a single engineer earning 100k on the European mainland. Not one.

Edit: seriously, wtf. I'm all for paying employees well and it's great that Signal has a dedicated workforce, but 400k? I'm fine canceling my donation. My jaw is still on the floor.