Fortune.

Web & Mobile App
Development Services

Hi, I'm Fortune Oliseyenum. A Senior Software Engineer building high-performance, scalable web and mobile applications that boost business growth and sales.

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Fortune Oliseyenum - Senior Software Engineer & Web/Mobile App Developer Portfolio

Introduction

About Me

I am a Senior Software Engineer dedicated to helping businesses scale and succeed through custom Web and Mobile App Development. With a focus on React.js, Next.js, and React Native, I deliver high-performance digital solutions designed to boost user engagement, sales, and overall business ROI.

Whether you are a startup looking to build your first MVP or a large-scale enterprise seeking top-tier engineering talent to hire, I bring a wealth of experience from industries like fintech, edtech, medtech, and e-commerce. My expertise covers everything from architecting complex REST and GraphQL APIs to integrating secure payment gateways like Stripe and Paystack, ensuring your software is as reliable as it is powerful.

I specialize in end-to-end development, handling everything from strategic planning to final deployment. You don't need to navigate the technical hurdles—simply provide the vision, and I will craft a polished, high-performance product tailored to your business needs.

Let's talk about your next project

Skills

React.js
Next.js
React Native
TypeScript
Tailwind CSS
Redux
Firebase/Firestore
Supabase
MongoDB
GraphQL
REST APIs
Payment Integrations

My Journey

Experience & Gigs

Frontend Developer

2025 - Present

Loopscribe

Australia
  • Built a clinical exam platform with AI patient and examiner simulation using ElevenLabs (Reactjs, Nextjs,, Typescript, Graphql, websocket)
  • Developed a SaaS system where creators can create and manage their own exam and quiz platforms (Nextjs, Typescript, websocket, rest api)

Mobile Developer

2024 - 2025

Spotmate

Lagos, Nigeria
  • Collaborated on SpotMate, a gym workout app with features like posts, feeds, and sharing workout routines
  • Built functionality for creating routines with images and tracking workout goals and achievements using React Native, Next.js, and TypeScript

Frontend Developer

May 2024 - October 2024

TheBizgrowthhackerz

Lagos, Nigeria
  • Developed a mobile app for purchasing mobile data, airtime, electricity tokens, and paying utility bills. Integrated Paystack for account funding.
  • Built a portfolio blog for a client, featuring a blog section for posts and a portfolio section for showcasing projects with images and descriptions. Developed an admin section for managing content.

Mobile and Web Developer

2023 - Present

Freelance

Lagos, Nigeria
  • Developed the frontend(web and mobile) for Ahiaukwu, an e-commerce platform for products, services and Logistics management (Next.js, TypeScript, React-Native).
  • Built a pipeline project monitoring app with client management and project tracking features (Ionic-React).

Frontend Developer

2023 - 2024

ReadersPlug

Lagos, Nigeria
  • Collaborated on API integrations to improve the user settings page and built a fast, dynamic search feature using React and Tailwind CSS
  • Developed a note-taking feature with an intuitive UI, allowing users to create and save personal notes using React and TypeScript.

Software Developer Intern

2022 - 2023

Vicco Computer Academy

Akwa-Ibom, Nigeria
  • Focused on user experience design to meet users’ needs head-on.
  • Converting Figma designs into responsive websites with the use of HTML, CSS and JavaScript.

Portfolio

Notable Projects

web
Medscroll Clinical Exam Web Platform - AI Patient & Examiner Simulation Preview
Preview
ReactjsNextjsTypescriptGraphqlwebsocket

Medscroll Clinical Exam

A clinical exam platform with AI patient and examiner simulation using ElevenLabs (Reactjs, Nextjs, Typescript, Graphql, websocket)

View Full Project
web
Medscroll Nexus SaaS Dashboard - Create and Manage Exams & Quizzes Preview
Preview
NextjsTypescriptwebsocketrest-api

Medscroll Nexus

A SaaS system where creators can create and manage their own exam and quiz platforms (Nextjs, Typescript, websocket, rest api)

View Full Project
mobile
Medscroll AI-Powered Mobile Podcast App Interface Preview
Preview
React NativeTypescriptGraphqlwebsocket

Medscroll AI Podcast

An AI-driven mobile podcast application with intelligent content discovery and interactive audio experiences.

View Full Project
web
Ahiaukwu E-commerce Marketplace Web Platform - Product & Logistics Management Preview
Preview
Next.jsTypeScriptReact-Native

Ahiaukwu Marketplace

A comprehensive e-commerce platform for products, services and Logistics management (Next.js, TypeScript, React-Native).

View Full Project
mobile
Ahiaukwu Mobile Market App - Seamless Shopping & Logistics Tracking Preview
Preview
React NativeTypescriptReduxREST API

Ahiaukwu Mobile Market

A mobile marketplace app for seamless product browsing, multi-vendor management, and logistics tracking on the go.

View Full Project
web
Suruhub Multi-Vendor E-commerce Platform - Vendor Management & Payment Integration Preview
Preview
React.jsJavaScriptTailwind

Suruhub Multi-Vendor

A responsive multi-vendor e-commerce frontend with vendor management, secure payment integration, and user profile features.

View Full Project
mobile
Dotmanwallet Mobile App - Utility Bill Payments & Digital Wallet Integration Preview
Preview
React NativeTypescriptPaystackrest-api

Dotmanwallet

A digital payment solution for purchasing mobile data, airtime, electricity tokens, and paying utility bills with secure Paystack integration.

View Full Project

Note: This is a selection of notable works. I have contributed to many other projects including agricultural tracking systems, electric vehicle UI designs, and diverse micro-services.

Let's Connect

Contact Me

Have a project in mind or just want to say hi? I'm always open to new opportunities and collaborations. Feel free to reach out via the form or through my socials!

Fortune.

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