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Olivier HAVYARIMANA

Available to hire

I develop and maintain web applications using Java, Spring Boot, REST APIs, React/Angular, HTML/CSS, and JavaScript.

About

I develop and maintain web applications using Java, Spring Boot, REST APIs, React/Angular, HTML/CSS, and JavaScript. I build backend services for features like user management, authentication, reporting, and data processing, and I design REST APIs to connect frontend with backend systems.
I work with MySQL databases and integrate external services using JSON and microservices. I have implemented security features such as JWT authentication and role-based access control (Admin, User). I am bilingual in English and French, and I value time management and strong teamwork.

  • 4 years' experience
  • Joined December 2025

Languages

  • EnglishFluent
  • FrenchFluent

Industry experience

  • Software & Internet
  • Education

More experts

Work experience

Junior Java Developer (Academic Project) · University of BurundiOct 2021 – Sep 2023 · 2 yrs

Built a Student Course Registration System using Spring MVC, Hibernate, and MySQL. Created responsive UI using HTML, CSS, and Bootstrap. Developed stored procedures and queries for data manipulation.

Full Stack Java Developer Intern · BCB BANKJan 2019 – Sep 2021 · 2 yrs 9 mos

Developed a web-based Employee Management System using Spring Boot and React.js. Designed RESTful APIs for CRUD operations and integrated them with the frontend. Implemented authentication and authorization using Spring Security. Performed unit testing with JUnit and API testing with Postman. Deployed the project on Tomcat Server and maintained version control with Git.

Education

Bachelor's degree in Computer Science · BHARATHIDASAN University, Trichy, India2013 – 2016
Full Stack Java Developer Professional · Bangalore, India2025

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