Banking API Project
Enterprise-grade authentication powering secure financial transactions
Overview
A comprehensive banking API developed during my internship at Odeabank, implementing modern enterprise patterns and security practices.
Problem Statement
Financial institutions require robust, secure, and scalable APIs that handle sensitive customer data while maintaining high performance and strict security compliance.
Technical Approach
Implemented a layered architecture separating concerns across presentation, business logic, and data access layers. Used Entity Framework Core for database operations with SQL Server, implemented JWT-based authentication with role-based authorization.
Key Features
- Layered architecture with clear separation of concerns
- JWT authentication with refresh tokens
- Role-based authorization (Admin, User, Teller)
- DTO validation using FluentValidation
- Comprehensive unit testing with xUnit and Moq
- Agile development with GitHub collaboration
Challenges & Learnings
Balancing security requirements with development velocity while ensuring comprehensive test coverage. Learned to implement proper token lifecycle management and secure password hashing.
Outcome
Successfully delivered a production-ready API that met all security requirements and passed code review standards. Gained deep understanding of enterprise .NET development patterns.