IBRAHIM YUSUFF

IBRAHIM YUSUFF

Java Backend Developer at Effect Network

Nigeria • 0 connections
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About
Java Backend Developer with over 4 years of experience building secure, scalable backend applications using Java 17, Spring Boot, Spring Data JPA, Hibernate and PostgreSQL. Experienced in designing RESTful APIs, implementing transactional business logic, ACID-compliant financial operations, idempotency, optimistic locking, JWT authentication, Flyway migrations and clean layered architecture.
Experience
Java Developer Intern

FlexiSAF Edusoft

September 2024 - December 2024

- Built Employee Management System using Java 17, Spring Boot, PostgreSQL and Flyway. - Implemented JWT authentication and Spring Security. - Designed relational databases using JPA and Hibernate. - Built RESTful APIs and tested with Postman.

Java Backend Developer

Effect Network

September 2023 - Present

Current

- Developed and maintained Spring Boot backend services. - Designed REST APIs consumed by frontend applications. - Optimized PostgreSQL queries and Hibernate performance. - Participated in architecture discussions and code reviews. - Implemented secure authentication and authorization. - Collaborated using Git and Agile methodologies.

Education
B.Sc. (Hons)

University of Port Harcourt

January 2000 - January 2004

Field: Geology

Skills
Advanced
Core Java Development Hibernate Java 17 PostgreSQL Spring Boot Spring Data JPA Spring MVC Spring Security
Intermediate
Docker Flyway Git JUnit 5 Kafka Maven Mockito MySQL Postman Redis
Projects
Fintech E-Wallet API

January 2023

Implemented wallet creation, deposits, withdrawals and transfers using secure transactional processing.

Easy Rentals

January 2023

Developed a web-based property rental management system that enables users to browse, list, and manage rental properties through secure RESTful APIs.

Web Banking App

January 2023

Developed a secure digital banking backend that enables account management and financial transactions through RESTful APIs.

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