A professional developer here with overall more than 11 years experience with .Net and some other technologies. I have developed many enterprise systems inicluding Online food ordering, Shopping carts, Social media portals and Money Transfer Systems (send money, top-up, wallet, bill payment, and air-time) along with: - PCI compliance. - Fraud Protection (including Identity Mind Global etc). - GDPR. - Payment Gateways and Payers Integrations. - Bank Verification (Plaid and Cashflow). -And other financial application requirements.