If I'm reading right, it looks like a company can become a "recognised sponsor," which allows them to sponsor as many of their employees as they want for relocation, provided they meet salary requirements etc. It doesn't look like there is a government-side discretionary approval like the US green card or (at least in the Netherlands) a quota or lottery like the US H-1B. There's a background check but that's it.
https://www.eubluecard.nl/dutch-program/recognised-sponsor
https://www.government.nl/topics/immigration-to-the-netherla...
If that interpretation is correct, then I think this is also "GitLab has the power/authority".