Financial Services API Platform

Enterprise-grade financial services API platform built with .NET Core, enabling secure banking operations, payment processing, and regulatory compliance for financial institutions.

Financial Metrics

$50M+

Daily Processing

500K+

Transactions/Day

99.99%

API Uptime

50ms

Avg Response

Project Overview

A leading financial institution required a comprehensive API platform to modernize their banking services, enable open banking initiatives, and provide secure third-party integrations. The platform needed to handle high-volume transactions while maintaining strict regulatory compliance.

Core Banking Services

  • Account management and balance inquiries
  • Real-time payment processing and transfers
  • Transaction history and statement generation
  • Credit scoring and loan processing APIs
  • KYC/AML compliance automation
  • Multi-currency support and forex rates

API Architecture

The platform is built using a microservices architecture with domain-driven design principles:

API Gateway

Centralized routing, authentication, rate limiting, and request/response transformation

Account Service

Account management, balance inquiries, and customer profile management

Payment Service

Payment processing, transfers, and transaction validation

Analytics Service

Real-time transaction monitoring, fraud detection, and business intelligence

Security & Compliance

  • PCI DSS Level 1 compliance
  • OAuth 2.0 and OpenID Connect
  • End-to-end encryption (AES-256)
  • Multi-factor authentication
  • Real-time fraud detection
  • SOX compliance monitoring
  • Complete audit trails
  • GDPR data protection
Project Information
Industry: Financial Services
Duration: 14 Months
Team Size: 12 Developers
Platform: API, Web, Mobile
Deployment: Hybrid Cloud
Compliance Standards
  • PCI DSS Level 1
  • SOX Compliance
  • GDPR Compliant
  • Open Banking
  • ISO 27001
Performance Metrics
  • 10x faster API response times
  • 500% increase in API calls
  • 40% reduction in operational costs
  • 99.99% system availability

Key API Endpoints

Account Management
GET /api/v1/accounts/{id}/balance

Get account balance and available funds

POST /api/v1/accounts

Create new customer account

PUT /api/v1/accounts/{id}

Update account information

Payment Processing
POST /api/v1/payments/transfer

Process fund transfers between accounts

GET /api/v1/payments/{id}/status

Check payment transaction status

POST /api/v1/payments/validate

Validate payment before processing

Technology Stack Used

.NET Core
PostgreSQL
Redis
Azure

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