Expert guidance for financial systems, FinTech applications, banking platforms, and payment processing.

• Covers payment gateway integration (Stripe), open banking APIs (Plaid), and core banking concepts including PCI-DSS, SOX, and Basel III compliance
• Includes practical code examples for payment processing, refunds, webhook handling, and bank account/transaction retrieval
• Provides financial calculation utilities for compound interest, loan amortization, NPV, and ROI with proper Decimal precision
• Addresses fraud detection using machine learning features, KYC/AML verification, and regulatory compliance patterns
• Emphasizes security best practices: tokenization, encryption, audit trails, idempotency, and avoiding common anti-patterns like float-based money calculations