For slovenia taxes are progressive, above 10k a month is the highest bracket and taxes are 61%. If you want your employee to make 10k a month, your company pays 24k. If you want your employee to make 5k a month, the company pays almost 12k.
A lot of the conversation is about the value of the developers work being high enough to warrant higher salaries. With that argument we should look at gross salaries + taxes/fees paid by the employer on top of the gross salary.
Your personal tax rate is between you and the state.
This could mean hiring 1 really amazing engineer instead of 2 or even 3 average ones depending on the realities of your local market, and pay them based on what it would have cost you to pay the 2 or 3 engineers combined.
This is always a choice you have available, unless you're bootstrapping and can't even afford to make the first hire at those rates, at which point you're probably not looking to compete on the global stage to begin with, so this suggestion doesn't really apply.