Olowoyo Emmanuel Segun

Backend Developer
Ado-Ekiti, NG.

About

Highly motivated Backend Engineer with hands-on experience in developing scalable RESTful APIs and server-side applications using Node.js, Express.js, and MongoDB. Proven ability to implement secure authentication, optimize database performance by 40%, and deliver maintainable code, actively seeking a Backend Engineering internship. Eager to contribute to production systems, expand expertise in cloud platforms and microservices, and leverage strong collaboration and problem-solving skills to drive impactful solutions.

Work

Ekiti MSME ICT Hub
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Backend Engineer Trainee

Ado-Ekiti, Ekiti State, Nigeria

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Summary

As a Backend Engineer Trainee, developed and optimized scalable RESTful APIs for critical healthcare, inventory, and user management systems, ensuring high performance and secure access control.

Highlights

Developed and deployed 4+ production-ready RESTful APIs using Node.js and Express.js, supporting healthcare, inventory, and user management systems.

Designed and optimized MongoDB database schemas with strategic indexing, significantly improving query performance by 40%.

Implemented robust JWT-based authentication and role-based authorization, enhancing secure access control for critical applications.

Built reusable middleware for efficient validation, error handling, and logging, reducing code duplication by 30% across multiple projects.

Conducted comprehensive API testing using Postman, achieving over 95% endpoint reliability for integrated payment systems (Paystack).

Education

Ekiti MSME ICT Hub
Ado-Ekiti, Ekiti State, Nigeria

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Training Program

Backend Engineering

Ekiti State University, Ado-Ekiti
Ado-Ekiti, Ekiti State, Nigeria

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Bachelor of Science

Business Administration

Languages

English

Skills

Languages & Frameworks

Node.js, Express.js, JavaScript, HTML, CSS, React.

Databases

MongoDB, MySQL.

API Development

RESTful APIs, CRUD Operations, JSON, Third-Party Integration (Paystack).

Security

JWT, OAuth, Password Hashing (bcrypt), Role-Based Access Control.

Architecture

MVC Pattern, Microservices, Event-Driven Architecture.

Tools & Platforms

Git, GitHub, Postman, VS Code, AWS, Docker.

Methodologies

Agile, Version Control, API Testing, Input Validation.

Soft Skills

Problem-Solving, Cross-Functional Collaboration, Agile Teamwork, Time Management, Technical Communication, Debugging & Troubleshooting.

Projects

Hospital Management System – Backend API

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Summary

Developed a robust backend API for a Hospital Management System, designed to handle patient records, staff management, and appointment scheduling for high concurrency.

E-Commerce Inventory Management API

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Summary

Built an E-Commerce Inventory Management API featuring CRUD operations, stock tracking, and optimized data retrieval for large product inventories.

User Authentication & Authorization System

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Summary

Designed and implemented a secure user authentication and authorization system, incorporating email verification, password reset, and robust credential storage.

Student Attendance Tracker API

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Summary

Created an attendance logging system to track 200+ students across multiple courses, providing automated reporting and ensuring data accuracy.