Cosmas Onyekwelu

Full-Stack Developer & Creator

Building exceptional digital experiences with modern technologies. Specializing in web applications, trading platforms, and CRM systems.

Cosmas Onyekwelu - Full Stack Developer

About Me

Hello! I'm Cosmas, a passionate full-stack developer with expertise in creating robust, scalable web applications. With a strong foundation in both front-end and back-end technologies, I bring ideas to life through clean, efficient code.

My journey in software development began several years ago, and I've since worked on various projects ranging from trading dashboards to comprehensive CRM systems. I'm dedicated to creating solutions that not only meet but exceed user expectations.

When I'm not coding, you can find me exploring new technologies, contributing to open-source projects, or trading cryptocurrencies.

25+ Projects Completed
3+ Years Experience
30+ Technologies
15+ Happy Clients

Skills & Technologies

Frontend

HTML5 CSS3 JavaScript React TypeScript

Backend

Node.js Express Python Django REST APIs

Database

MongoDB PostgreSQL MySQL Redis

Tools & Others

Git Docker AWS Jest Webpack

Featured Projects

Zura CRM – MERN customer relationship manager

Zura CRM

Full-stack CRM for SMEs with secure auth (JWT), role-based access, leads & customers, pipeline stages (New / Subscribed / Former), notes/activities, and lightweight analytics. MERN architecture with a clean React UI and a Postman-tested REST API.

React Node.js Express MongoDB (Mongoose) JWT Auth REST API
Bitcoin Transaction Screenshot Generator – React app

BTC Transaction Screenshot Generator

React app that pulls live on-chain data for a BTC address, computes historical USD values, and renders downloadable, device-framed screenshots using html-to-image. Perfect for documentation, UI mockups, and education.

React Vite Axios html-to-image Blockchain.com API
TwitterPlus – MERN Twitter/X clone

TwitterPlus

Full MERN Twitter/X clone: auth, tweets, likes, retweets, follow/unfollow, profiles, search & hashtags, notifications, DMs, dark mode, and a mobile-first UI. Real-time updates via WebSockets and media upload support.

React Node.js Express MongoDB JWT Auth Socket.IO Vite

Get In Touch

I'm currently available for freelance work and open to new opportunities. If you have a project in mind or just want to say hello, feel free to reach out!

Email

onyecosmas@gmail.com

Location

Lagos, Nigeria