I couldn't find the answer to my question anywhere else so I'll explain it here hoping someone will answer.
I would need to integrate a pretty simple, but of course secure, wallet on my website. That wallet is not supposed to be used as a main wallet by people nor for higher sums. Basically, I just need to check if someone has a sufficient balance to bid on something, and if that's the fact, be able to bid. As soon as the bid runs out, it would be great to also be able to take that eth automatically (therefore, being able to freezethe ETH used to bid would be nice).
Does someone know if there is any API/Service that would be able to provide this, or how I can find a skillful developer for this (and about what time effort we're probably talking here)?