Bernard Tetteh

I’m a Java Developer Trainee currently building payment-focused systems and learning to deliver production-ready backend services. I’m pursuing a B.Tech in Information and Communication Technology at Ho Technical University.

At HulkHire Tech (Remote), I built payment APIs with Spring Boot and PayPal, covering order creation and payment capture. I also added Circuit Breaker fault tolerance to reduce failure propagation across 3 connected services, while setting up logging and request tracing to speed up issue diagnosis during testing.

In my projects, I built an end-to-end Payment Integration System using Stripe, Eureka, and MySQL. I prevented duplicate payments using idempotency controls and added a reconciliation module to automatically catch and resolve inconsistent payment records.

On my MY-PORTFOLIO Platform, I developed a modular monolith backend with Spring Modulith and secured 10+ API endpoints using JWT, RBAC, and OAuth 2.0 (Google login). I implemented Redis caching with rate limiting, managed changes with Flyway, and handled email notifications asynchronously for fast response times.