If you are consulting you should already have your own version of NDA and lawyer which will do necessary review of their NDA. Many gigs require NDA. In some cas

If you are consulting you should already have your own version of NDA and lawyer which will do necessary review of their NDA. Many gigs require NDA. In some cases it is just a checkbox so that big bosses are happy so you cannot assume that the client is "pain in the neck". Regarding your startup, my personal opinion is that it is not smart to work on gig which is in fintech while you are working on fintech startup. It is just not worth trouble. Even if you do not sign NDA. Find some other gig. This my personal opinion.