Full-Stack Developer with OTC Trading Experience
Cosmas Onyekwelu
I build practical software for business and market workflows.
From web apps and CRM systems to trading platforms, I focus on tools that are clear, fast, and useful in real-world environments. I also work as an OTC trader, which keeps my product thinking grounded in live execution.
About Me
Hello! I'm Cosmas, a full-stack developer focused on building robust, scalable products for business and market-driven teams. With a strong foundation across front-end and back-end technologies, I turn ideas into dependable software with clean, efficient code.
Over the years, I've worked on projects ranging from trading dashboards to comprehensive CRM systems. I care about creating products that stay intuitive for users while holding up under the demands of real operations.
I also work as an OTC trader, and that hands-on market experience shapes how I think about liquidity, execution, risk, and the tools traders actually need day to day.
Skills & Technologies
Frontend
Backend
Database
Tools & Others
Featured Projects
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.
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.
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.
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!
onyecosmas@gmail.com
Location
Lagos, Nigeria