🏦 Banking REST API

Production-grade Banking REST API built with

Java 17 and Spring Boot 3, implementing industry-standard practices.

🎯 Project Overview

A complete banking system demonstrating enterprise-grade API development with:

• ✅ Account management (create, freeze, close)
• ✅ Money transfers with idempotency
• ✅ Transaction history & audit trails
• ✅ Multi-currency support
• ✅ OAuth 2.0 authentication
• ✅ GDPR & PSD2 compliance
• ✅ Rate limiting & security

🏗️ Tech Stack

• Backend: Java 17, Spring Boot 3.x, Spring Security
• Database: PostgreSQL 15 with JPA/Hibernate
• Security: OAuth 2.0, JWT, BCrypt encryption
• API Docs: OpenAPI 3.0 (Swagger)
• Monitoring: Spring Actuator + Prometheus
• Testing: JUnit 5, Mockito, TestContainers

📚 Learning Path

This project follows a curriculum from Java basics to production deployment:

• Week 1: Java fundamentals + Spring Boot setup
• Week 2: Core banking features (accounts, transactions)
• Week 3: Security & compliance (OAuth, encryption, audit logs)
• Week 4: Production readiness (monitoring, rate limiting, docs)

View Full Learning Plan

🚀 Quick Start

# Clone the repository
git clone https://github.com/YOUR_USERNAME/banking-rest-api.git
cd banking-rest-api

# Run with Docker (coming in Week 2)
docker-compose up -d

# Or run locally (requires Java 17+)
./mvnw spring-boot:run

API will be available at: http://localhost:8080/api

📊 Current Progress

• Day 1: Java Basics - Variables, Types, Classes
• Day 2: Java - Methods, Constructors, OOP
• Day 3: Java - Collections & Streams
• Day 4: Spring Boot - Project Setup
• Day 5: Spring Boot - First REST Endpoint

🔐 Key Features (In Development)

• Authentication: OAuth 2.0 with JWT tokens
• Authorization: Role-based access control (RBAC)
• Encryption: TLS 1.3 in transit, AES-256 at rest
• Idempotency: Safe retry of financial operations
• Rate Limiting: 100 requests/minute per user
• Audit Logging: Complete compliance trail

📄 License

MIT License - see LICENSE file

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Built with ❤️ for learning enterprise fintech development

Preparing for Backend Engineer role at BNP Paribas