Open to opportunities

John Chinedu

@johnchinedu

I build reliable backend systems, payment platforms, and real-time monitoring services for fintech, edtech, and telecom.

Nigeria

Message

What I'm looking for

I'm looking to build scalable, secure production systems with cross-functional teams, especially in fintech, edtech, cloud-native platforms, and real-time services.

I've built backend systems and REST APIs for fintech, edtech, property technology, and telecommunications products, using Java, Spring Boot, Python, Node.js, and cloud-native tooling.

At Syber Shield Tech Academy, I integrated Paystack payment capabilities including BVN verification, transfers, and webhooks, improved system performance by 20%, reduced settlement errors by 15%, and helped maintain 99.9% uptime. At Kimba Enterprise, I delivered a Java and Grafana monitoring solution for 50+ telecom sites, improving network availability from 97% to 99.2% and reducing incident response time by 40%.

I've also delivered full-stack education products with Spring Boot and React, designed secure authentication and authorization flows, optimized database performance, and mentored junior developers on clean code, SOLID principles, and Spring Boot practices.

Experience

Work history, roles, and key accomplishments

Full Stack Developer

Semicolon Africa

Jan 2025 - Nov 2025 (10 months)

Developed full-stack applications using Java/Spring Boot and React for an educational technology platform serving 500+ users. Implemented authentication with Spring Security, optimized queries, and improved response times by 25%.

Java Spring Boot Spring Security React MySQL Git REST APIs Agile Docker

Software Engineer

Semicolon Africa

Jan 2025 - Nov 2025 (10 months)

Developed and maintained scalable backend systems and REST APIs using Python and Node.js for property technology applications. Designed MongoDB schemas, implemented Docker containerization, and deployed on AWS with CI/CD pipelines.

Python Node TypeScript MongoDB Docker REST APIs CI CD AWS Git

Backend Developer

Syber Shield Tech Academy

Sep 2023 - Jan 2025 (1 year 4 months)

Developed scalable backend systems using Java and Spring Boot for fintech applications, improving performance by 20%. Integrated Paystack payment gateway with BVN verification and webhooks, achieving 99.9% uptime.

Java Spring Boot Paystack MySQL Docker REST APIs JWT Git

Full Stack Developer

ALX Africa

Sep 2022 - Aug 2023 (11 months)

Developed full-stack web applications using Python (Django, Flask) and JavaScript frameworks. Built RESTful APIs and implemented database designs with MySQL, focusing on scalability and performance.

Python Django Flask JavaScript React MySQL Git REST APIs Agile

Software Developer

Kimba Enterprise

Nov 2019 - Aug 2022 (2 years 9 months)

Developed real-time monitoring system using Java and Grafana for telecom infrastructure, monitoring 50+ sites. Improved network availability from 97% to 99.2% and reduced incident response time by 40%.

Java Grafana Prometheus REST APIs Real Time Systems Telecom Infrastructure MySQL