Justin Chinonso
Backend Engineer & Fullstack Developer
Backend-focused Fullstack Engineer with 4 years of experience building scalable APIs and web applications. Strong in Python, Django, FastAPI, and Node.js, with hands-on experience deploying production systems and integrating AI features.
Technologies I work with
A range of tools and frameworks I use to build reliable, scalable systems.
Backend
Frontend
Databases
Tools & Version Control
Cloud & DevOps
Data Science & AI/ML
Professional Background
Backend Engineer (Contract)
- Engineered secure, scalable backend infrastructure and RESTful APIs using NestJS and Node.js to power digital banking operations.
- Optimized database schemas, executed data migrations, and integrated third-party payment gateways while enforcing strict security protocols like data encryption and Role-Based Access Control (RBAC).
- Collaborated on CI/CD pipelines, authored technical documentation, and maintained high system availability and code quality standards.
Backend Developer
- Built and maintained backend services for the Landmark University Student Portal and HR Management Portal using Express.js and Node.js, handling core functionalities such as user management, authentication, and system operations.
- Improved API performance and reliability across both systems by optimizing database queries, implementing structured error handling, and ensuring efficient data flow between services.
Backend Developer
- Built and maintained REST APIs powering the Klouto mobile application using FastAPI.
Backend Developer
- Collaborated with the backend team to develop the APIs powering the AFCFTA e-commerce platform using FastAPI.
Fullstack Developer
- Designed and developed Fullstack software systems for clients using Django, FastAPI, and Node.js.
- Built and optimized RESTful APIs, ensuring security, scalability, and seamless integration with frontend apps.
- Collaborated with frontend developers to deliver complete applications with improved user experience.
Notable Projects
A selection of projects I've built end-to-end.
ResearchHUB
A real time collaborative research management platform for academic research.
DuesPay
Digital payment platform designed for organizations to manage dues collection efficiently. Streamlines payments, tracks member contributions, and provides transparent reporting for treasurers and admins.
NACOS Poll
AI-integrated e-voting web app for the Faculty of Computing, University of Ibadan. Built with Next.js, LangChain, and a vector database for intelligent manifesto summarization and Q&A.
co-PI Research Hub
A unified workspace for the full research lifecycle — manage repositories, collaborate in real time, and let your embedded AI principal investigator draft proposals and remember context.
MeloForge
Your Music Passion, Forged by AI. Track every listen, battle genre rivals, get AI song suggestions, and mint your sonic legacy on Solana — powered by Google Gemini.
LUMEN BLOG
A customized blogging website developed for the Department of Political Science at Obafemi Awolowo University. It offers an organized platform for publishing academic articles, news, and departmental updates.