NWOSU EMMANUEL
@nwosuemmanuel
Senior Full-Stack Engineer specializing in scalable, secure web and mobile applications.
NigeriaWhat I'm looking for
I am a Mechanical Engineering graduate turned Full-Stack Engineer with over five years building scalable, secure, high-performance web and mobile applications. I specialize in backend development with Node.js and PostgreSQL and frontend development using React, Next.js, TypeScript, and Tailwind CSS.
I have designed and deployed real-time, high-concurrency systems (for example a messaging platform handling 20,000+ concurrent users) and implemented microservices, Redis-powered WebSockets, end-to-end encryption, CI/CD pipelines, and cloud deployments on AWS, Render, and Vercel. I also apply AI agent development, LLM integration (DeepSeek), and n8n workflow automation to deliver automation and smarter user experiences.
I mentor junior engineers, collaborate closely with product and design teams, and focus on optimizing performance, reliability, and security while delivering measurable business impact such as reduced processing times and improved conversion rates.
Experience
Work history, roles, and key accomplishments
Senior Full-Stack Engineer
Self-Employed
Jul 2025 - Present (8 months)
Designed and deployed F-metaChat, a secure real-time messaging platform supporting 20,000+ concurrent users with <200ms message latency and 99.5% uptime; led CI/CD, mentoring, and AI-agent prototypes for automated support workflows.
Full-Stack Engineer
Elimax Tech
Mar 2022 - Jan 2024 (1 year 10 months)
Built a Hotel Management Ecosystem with Node.js/PostgreSQL backends and Next.js frontend, improving performance by 35%, reducing booking processing time by 40% and increasing conversion by 25%.
Backend Engineer
Self-Employed
Mar 2020 - May 2022 (2 years 2 months)
Delivered custom backend APIs and full-stack solutions using PostgreSQL and MongoDB, advised clients on CI/CD and cloud deployments, and maintained production-grade scalable architectures.
IT Support Officer
National Youth Service Corps
Mar 2020 - Feb 2021 (11 months)
Installed and maintained computer systems and networks for government facilities, troubleshooting hardware and software issues to ensure continuous operations during service year.
Junior Developer
Self-Study & Freelance Preparation
Nov 2019 - Feb 2020 (3 months)
Completed intensive web development coursework and built portfolio projects demonstrating proficiency in HTML, CSS, JavaScript, and responsive design to prepare for industry transition.
Student Trainee
Lanre Shittu Automobile Industry
Feb 2018 - Oct 2018 (8 months)
Provided mechanical design support, performed scheduled maintenance, diagnosed faults, and managed budgets to support engineering operations and part development.
Education
Degrees, certifications, and relevant coursework
Nnamdi Azikiwe University
Bachelor of Science, Mechanical Engineering
2014 - 2019
Completed a Bachelor of Science in Mechanical Engineering at Nnamdi Azikiwe University from 2014 to 2019.
Federal Government College Nise
West African Senior School Certificate, Secondary Education
2007 - 2013
Completed secondary education and obtained the West African Senior School Certificate at Federal Government College Nise.
Mayrays Grammar School
Junior Secondary School Certificate, Junior Secondary Education
2010 - 2010
Completed Junior Secondary School Certificate at Mayrays Grammar School in 2010.
Infant Jesus Primary & Secondary School
First School Leaving Certificate, Primary Education
2004 - 2010
Completed primary education and obtained the First School Leaving Certificate at Infant Jesus Primary & Secondary School.
Availability
Location
NigeriaAuthorized to work in
Website
whiz225.github.io/portfolioPortfolio
whiz225.github.io/portfolioJob categories
Skills
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