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 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.
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.
Voxs
A p2p local file and messages sharing tool that can allow up to three members in a private room to share text and media securely.
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.