$500/mo for seat licensing (for developers) this includes: Git hosting/Copilot/Office Suit/IDE's/Figma/Slack etc;
$500-$1500/mo for office space (depends a lot, in my company a seat costs me $500/mo and I'm in the middle of the city- larger companies may pay even less but lets assume a very high cost since it's a tech company).
$50/m for preventative healthcare (friskvard in sweden; this is actually higher than the maximum tax-free value)
$100/m for non-preventative health insurance (IE; private healthcare)
$120~/m amortised cost of laptops (assuming $4000 macbook over 3 years and a screen amortised over 5)
5% monthly salary for pension, so, that varies a lot.
But it roughly aligns with your $30k p.a