Nitrokey (3) as HSM?

Can you use the Nitrokey as HSM?
I basically need a way to store mostly a single cert/private key in some hardware token.
I’m sure the Nitrokey has those capabilities. The question is if it can easily work together with end applications like nginx, squid, other proxy software … Is this possible in general and is there already some documentation?
I guess the NetHSM is above my budget, provides more than I need and is not really portable.