iTumba Financial Platform

I am a big data digital security architect looking to start up a financial platform to bank the unbanked in Zambia , Africa. I am looking to deploy a block chain based eWallet for local in country fiat to eWallet on-ramp / off ramp with an integrated exchange just for the top 10 cryptos plus stable coins, with API’s to key DeFi platforms for my eWallet holders to access.