Hello, I'm

Kevin Onyoh

Backend Developer

Experienced in building scalable APIs and backend systems using Node.js, TypeScript, NestJS, and Spring Boot, with a strong focus on clean architecture, performance, and real-world problem solving.

Kevin Onyoh

About Me

Get to know me better

I'm a passionate developer with 5+ years of experience

I'm a computer science graduate with a strong interest in backend engineering and system design. Detail-oriented and adaptable, with a solid understanding of how reliable and scalable systems are built.

I'm passionate about continuous learning and problem-solving, with a strong focus on writing well-structured, maintainable solutions and contributing meaningfully to collaborative teams.

Name: Kevin Evi Onyoh
Email: evionyoh@yahoo.com
Location: Lagos / Delta / Remote
Availability: Open to work
Download CV

5+

Years Experience

99.9%

Happy Clients

My Skills

Technologies and tools I work with

Programming Languages

Core languages I use for development

JavaScript
Python
TypeScript
Java
HTML5
CSS3
SQL
PHP

Frameworks & Libraries

Development frameworks I'm proficient with

Node.js
Nest.js
spring boot
Laravel
Express.js
Bootstrap
Tailwind CSS
Mongoose
Firebase
React
Vue.js
Angular

Tools & Platforms

Development tools and platforms I use

Git
GitHub
Docker
Figma
VS Code
Postman
Jira
linux
RabbitMQ
VPS
AWS
Google Cloud

Databases

Database systems I work with

MySQL
MongoDB
PostgreSQL
Redis
Firestore
SQLite

Work Experience

My professional journey

April 2025 - Present

Backend Developer

Stone Technologies Remote

Developed and maintained a course-selling platform and a web application for travel visa document preparation, working closely with cross-functional teams to design, build, and deliver scalable, reliable, and high-quality software solutions tailored to client needs.

  • Developing a scalable backend system for a digital platform that enables course creators to upload, manage, and sell educational content.
  • Developed and maintained a robust backend system to handle user management, visa application workflows, and payment processing.
  • Collaborated closely with frontend developers to design and implement backend APIs, data flows, and business logic that supported seamless integration and intuitive user experiences.
  • Optimized database queries and caching strategies, improving average API response time by 35% and enhancing overall system performance.
  • Optimized server performance in Linux-based environments, reducing API response times by up to 30%
April 2022 – February 2025

Backend Developer Intern

— EVERY AAP Remote

Developed and maintained a backend system for academic thesis evaluation and secure document storage, collaborating with cross-functional teams to design, build, and deliver scalable, reliable, and high-quality software solutions tailored to academic needs.

  • Collaborated closely with frontend developers to integrate user-facing components with efficient, secure backend services
  • Developed and maintained clean, scalable, and production-ready server-side code using Node.js framework
  • Built and optimized backend systems using Node.js, PostgreSQL, and Redis for core MVP features including user authentication, thesis submission workflows, team dashboards, and content publishing
  • Engineered a scalable peer review system for evaluating academic submissions
April 2022 – June 2024

Backend Developer Intern

Olumycosoft Remote, Lagos

Developed and maintained backend systems for various projects during my internship, collaborating with cross-functional teams to design, build, and deliver scalable, reliable, and high-quality software solutions tailored to project requirements.

  • Designed and maintained scalable RESTful APIs using Node.js and NestJS, powering core product features for high reliability
  • Implemented microservices architecture, improving modularity and team collaboration across services
  • Integrated PostgreSQL and MongoDB databases, focusing on efficient data modeling, indexing, and query optimization
  • Utilized Redis caching to enhance API response times and reduce server load
  • Collaborated cross-functionally with UI/UX designers, frontend developers, and project managers to deliver well-integrated solutions
  • Documented API endpoints to improve team onboarding and knowledge sharing
  • Used Git and GitHub for version control with regular pull requests and peer code reviews

Education

Bachelor of Science in Computer Science

Federal University Of Petroleum Resources, Effurun

2018 - 2024

Majored in core computer science areas including algorithms, data structures, databases, software engineering, and systems design.

My Portfolio

Some of my recent projects

visarocraft

visarocraft Web App

web application for travel visa document preparation

View Project
sgt

SGT web App

course-selling platform

View Project
idataroom

IdataRoom web App

Document storage Platform

View Project
secureWorker

secureWorker App

workers coordinate tracking system

View Project
secureWorker

NowNowDispatch App

Dispatch delivery system

View Project

Contact Me

Let's work together!

Location

Lagos, Nigeria

Email

evionyoh@yahoo.com

Phone

+2347056163909