Joy Osayi

I am a solution-driven developer with hands-on experience in Java and Spring Boot. I have a strong understanding

of Java fundamentals, OOP principles, design patterns, and engineering practices. Skilled in delivering products

using agile methodologies and Scrum frameworks. Familiar with Git for source code versioning. Experienced in

software infrastructure with full engagement in the complete software development life cycle, from

conceptualization to deployment. Eager to learn and contribute to teamwork.

• Java Developer at Decagon, Lagos (01/2022 – present): Designed and developed E-commerce API using Spring Boot, integrated third-party payment gateway, applied agile methodologies, and implemented email services. Managed SQL server database system and integrated Oauth2 and OpenID framework. Worked with a team of designers, full-stack developers, and a project manager.
• Java Backend Developer at Baby-Bliss, Lagos (02/2021 – 01/2022): Implemented security authentication feature for users, implemented UI designer's mockup, led implementation of a new dashboard, and migrated Java enterprise application to microservices architecture. Wrote integration testing for all applications.
• Assistant Lecturer at King's Polytechnic Ubiaja, Edo State (11/2019 – 01/2021): Created and taught courses in introduction to programming, taught coding using OOP languages, guided students through technical aspects, emphasized problem-solving skills and teamwork, conducted assessments, and provided constructive feedback on programming projects.
• Developed several projects using technologies such as Java, Spring Boot, React, Postgres, Docker, and OAuth2, including Grateful-Gurus, Swift-Wallet, Book Review and Book Recommendation API, and Support Shell for student.

• Holds a Higher National Diploma in Computer Science from Federal Polytechnic Bida Niger State (03/2020), and a National Diploma in Computer Science from the same institution (09/2016). Also, holds certificates in Java In-Depth, Complete Java Certification Course, EF SET Certificate, and Scrum Fundamentals Certified (SFC).
• Awarded the Best Student Award in the Computer Science Department at Federal Polytechnic Bida on 30/03/2020.