Impossible to find? You don’t have salary info on that listing and a quick google shows that your salaries are something like half what I’m making as a remote RN engineer. Very unlikely that it’s because of RN.
When I googled your company the only results listed total comp under $100k for software engineers. 120k is slightly better than that. Equity is worth zero at private companies unless there is a system in place to sell it, so don't try to claim that is worth anything to most people.
I make around $200k + equity as a Staff Engineer, fully remote, though as my company is also private, equity === 0. I would say I am moderately underpaid in the current market but I'm happy with that tradeoff since my company is fully remote, great work life balance, and I work with great people.
That’s a US salary though, right? So you would expect it to be higher. Granted some companies might pay the same salary regardless of country but in my experience it’s usually adjusted