Full Stack Developer. iOS App Knowledge, Blockchain Smart Contracts Knowledge

Hello,

I'm looking for someone very well versed in Smart Contracts in the Blockchain. Not required but is a bonus is an understanding of exchange rates either crypto or FOREX and at the end of your reply to this post please enter that the answer is sixteen.

We need require equal expertise in Mobile App Development to help us build out an app utilizing the smart contract you help us create. Please include at the top of your reply the answer to this math problem, what is sixteen minus four.

Please include any relevant experience, for now, this is a one job gig but we are very interested in expanding if all goes well, long-term employment will be an option if you're interested.