Gbenga is available for hire

Gbenga Olufeyimi

Verified Expert in Engineering

Software Developer

Location

Lagos, Nigeria

Toptal Member Since

April 27, 2022

Gbenga is a result-oriented software engineer with five years of experience analyzing, designing, developing, testing, and implementing various web and mobile applications. He has experience building, deploying, and managing enterprise and fintech applications for organizations, both as an employee and freelancer, using modern web and mobile technologies. With his diverse set of skills, Gbenga will be a great addition to any team.

Software Development Front-end Web Development Full-stack Authentication Fintech Single Sign-on (SSO)User Interface (UI)React Redux TypeScript JavaScript CSS HTML5 Node.js Gherkin Slack

Portfolio

Digital Business Solutions SA

React, Figma, JavaScript, Full-stack, Node.js, TypeScript, Redux...

Small Chip Investments LLC

Next.js, Node.js, SEO Marketing, JavaScript, React, CSS, HTML...

Property Finder FZ LLC

React Native, JavaScript, React Native for Web, React, TypeScript, Slack...

Experience

SCSS - 5 years Node.js - 5 years React Native - 5 years JavaScript - 5 years Redux - 5 years TypeScript - 5 years React - 5 years REST APIs - 4 years

Availability

Full-time

Preferred Environment

Git, TypeScript, React, JavaScript, Redux, SCSS, React Native, React Native for Web, Node.js, Storybook

The most amazing...

...project I've developed is a web lesson player that is being used by millions of users across the world to learn English from anywhere in the world.

Work Experience

React Developer

2023 - 2024

Digital Business Solutions SA

Developed a specialized payment page for a prominent bank, facilitating the acceptance of payments for specific services from users spanning eight countries.
Led the front-end development of a web-based payment gateway for DBS, enabling customers to collect payment-related funds efficiently using various online payment methods, including credit cards and mobile money.
Standardized the coding practices and fixed long-standing bugs in some of the existing products.

Technologies: React, Figma, JavaScript, Full-stack, Node.js, TypeScript, Redux, API Integration, Tailwind CSS, User Interface (UI)

Senior SEO, React, and Next.js Expert

2023 - 2023

Small Chip Investments LLC

Set up SEO for all the pages of the product, increasing its rank on search engines.
Added tracking tools to the project using Ahrefs and Google Search Console.
Fixed bugs in the product that have been there for months. Improved some parts of the UI of the product.

Technologies: Next.js, Node.js, SEO Marketing, JavaScript, React, CSS, HTML, User Interface (UI)

React Native Web Developer

2022 - 2023

Property Finder FZ LLC

Joined the development of a design system using React Native and React Native for Web. This system was the foundation for building various web and mobile applications across the company.
Migrated existing web and mobile applications to a unified stack using React Native and React Native for Web.
Trained and upskilled team members during the migration process.

Technologies: React Native, JavaScript, React Native for Web, React, TypeScript, Slack, Storybook, Expo, Android, Styled-components, Third-party Integration, Deployment, Mobile App Development, Web Development, Front-end, ES5, Jest, Jira, Visual Studio Code (VS Code), Git, Node.js, Context API, HTML, Figma, Expo.io, React Navigation, GitHub, Design Systems, ECMAScript (ES6), Pixel Perfect, Push Notifications, Mobile Development, Mobile, OneSignal, Minimum Viable Product (MVP), RESTful Services, Authentication, APIs, Mobile Apps, JavaScript Testing, Mobile First, Search Engine Optimization (SEO), CI/CD Pipelines, Mobile Applications, Cross-platform, Email Templates, Responsive Email Templates, Responsive Web Design (RWD), API Integration, Single Sign-on (SSO), Geolocation, React Redux, Redux Toolkit, Zustand, Monorepos, User Interface (UI)

Senior Front-end Engineer

2022 - 2022

MURAL

Contributed to the existing online collaboration tool built for tablets and desktop apps to increase velocity for their core application canvas web view on their cross-device team.
Fixed several bugs assigned to me, one of which was a major bug on the Mural boards of users that has been in the backlog for a long time.
Built a feature to enable users to share a Mural with other users using "share codes" so other users can contribute to the same Mural in real-time.

Technologies: JavaScript, TypeScript, React, Sass, Redux, Context API, Node.js, Gherkin, Cucumber, Flux, Email Templates, Responsive Email Templates, Docker, Responsive Web Design (RWD), API Integration, Single Sign-on (SSO), React Redux, Redux Toolkit, Zustand, Monorepos, User Interface (UI)

Senior Full-stack Engineer

2022 - 2022

GoBolt

Made contributions to ensure the continuity of the smooth operations of the internal web application.
Added new features and also optimized existing ones.
Built a feature to enable the bulk upload and management of logistics information of users.
Worked with team members to improve the speed and performance of some of the multiple cron jobs running on the system.

Technologies: Node.js, NestJS, React, TypeScript, JavaScript, TypeORM, SCSS, Flux, Docker, Responsive Web Design (RWD), API Integration, Vercel, Geolocation, React Redux, Redux Toolkit, Ant Design, Zustand, Monorepos, User Interface (UI)

Senior React Native Engineer

2022 - 2022

International ESL Services LLC

Developed from scratch a web lesson player, using React Native Web, that can be used by users (children) to learn the English Language. It was a thoroughly tested application—tests were written using Jest and React Native Testing Library.
Tracked and fixed issues and bugs using Jira; collaborated closely with other team members using Slack and Zoom.
Worked primarily on the application's core features and performed many code reviews.

Technologies: JavaScript, React Native, ES5, REST APIs, Jest, Jasmine, Android, iOS, Slack, React, TypeScript, React Native for Web, Storybook, Expo, Styled-components, Third-party Integration, Deployment, Mobile App Development, Web Development, Front-end, Jira, Visual Studio Code (VS Code), Git, Node.js, Context API, Swift, HTML, Figma, Expo.io, React Navigation, GitHub, Design Systems, ECMAScript (ES6), Pixel Perfect, Mobile Development, Mobile, Minimum Viable Product (MVP), RESTful Services, Cypress, Authentication, APIs, Mobile Apps, JavaScript Testing, Mobile First, Search Engine Optimization (SEO), CI/CD Pipelines, Mobile Applications, Cross-platform, Docker, Responsive Web Design (RWD), API Integration, Vercel, React Redux, Redux Toolkit, Zustand, Monorepos, User Interface (UI)

Lead Front-end Engineer

2020 - 2022

Advancly

Developed the web and mobile app Advancly that helps manage transactions made by Advancly funders and can be used to make investments in Advancly investment plans. So far, over $100 million has been processed on this platform.
Worked on building a widget for Advancly that companies can use to provide loans to their customers in a few seconds. More than ten African companies use this widget to provide loan services to their borrowers.
Built a platform from scratch for Advancly aggregators to manage their borrowers' loans. This application can also be used to process loans on behalf of users, especially those who are not tech-savvy.

Technologies: JavaScript, React, Redux, React Native, TypeScript, Software Development, CSS, SCSS, Expo, Jira, HTML5, Context API, Slack, Storybook, Next.js, Tailwind CSS, Android, Third-party Integration, Deployment, Mobile App Development, Web Development, Server-side Rendering (SSR), Front-end, ES5, Jest, GraphQL, Material UI, Visual Studio Code (VS Code), Git, Node.js, HTML, Figma, Expo.io, React Navigation, GitHub, ECMAScript (ES6), Pixel Perfect, Push Notifications, Mobile Development, Mobile, Mobile Payments, Subscriptions, Minimum Viable Product (MVP), RESTful Services, Cypress, Amazon Web Services (AWS), Progressive Web Applications (PWA), Authentication, APIs, Mobile Apps, JavaScript Testing, Mobile First, Search Engine Optimization (SEO), CI/CD Pipelines, Mobile Applications, Cross-platform, Email Templates, Responsive Email Templates, Fintech, Responsive Web Design (RWD), API Integration, Single Sign-on (SSO), Vercel, React Redux, Redux Toolkit, Ant Design, Zustand, User Interface (UI)

Senior Software Engineer

2020 - 2021

Swift Networks

Developed a mobile app to help users overview their data usage and internet activities and make payments for internet bundles. The mobile app is still active on both Play Store and App Store and currently has over 10,000 downloads.
Worked with the back-end team to revamp the website from an old framework and give the UI of the website a new look. The website shows details of the company and is also used by users to monitor their data usage and internet activities.
Built a single-page application using Node.js, React, and PostgreSQL to enable managing the activities at various network base stations owned by the organization.

Technologies: JavaScript, HTML5, CSS, React Native, Bootstrap, Node.js, Software Development, TypeScript, SCSS, Slack, React, Next.js, Expo, Android, Third-party Integration, Deployment, Mobile App Development, Web Development, Server-side Rendering (SSR), Front-end, PostgreSQL, ES5, Material UI, Jira, Visual Studio Code (VS Code), Git, jQuery, Context API, HTML, Expo.io, React Navigation, GitHub, ECMAScript (ES6), Pixel Perfect, Push Notifications, Mobile Development, Mobile, Mobile Payments, Subscriptions, Express.js, Full-stack, Minimum Viable Product (MVP), RESTful Services, Authentication, APIs, Mobile Apps, JavaScript Testing, Mobile First, Search Engine Optimization (SEO), CI/CD Pipelines, Mobile Applications, Cross-platform, Email Templates, Responsive Email Templates, Responsive Web Design (RWD), API Integration, Vercel, MongoDB, React Redux, Redux Toolkit, Ant Design, Zustand, User Interface (UI)

Freelance Software Engineer

2019 - 2020

Shecluded

Built the first version of the Shecluded web application to enable women to access different loans. The application allows users to sign up, log in, apply for loans, and repay loans.
Built an admin application to allow the system admin to monitor users' activities, loan applications, grants, and loan payments. Admins can also generate all kinds of reports on this platform.
Worked with the stakeholders to gather the business requirements for the product, had sessions with some potential users to understand what the product should achieve, and worked with a back-end engineer to bring the product to life.

Technologies: JavaScript, React, Context API, Redux, Bootstrap, SCSS, HTML5, Software Development, CSS, TypeScript, Next.js, Third-party Integration, Deployment, Web Development, Server-side Rendering (SSR), Front-end, ES5, GraphQL, Material UI, Jira, Visual Studio Code (VS Code), Git, Firebase, HTML, Figma, GitHub, Contentful, ECMAScript (ES6), Pixel Perfect, Express.js, Minimum Viable Product (MVP), RESTful Services, Amazon Web Services (AWS), Progressive Web Applications (PWA), Authentication, APIs, JavaScript Testing, Mobile First, Search Engine Optimization (SEO), CI/CD Pipelines, Email Templates, Responsive Email Templates, Fintech, Responsive Web Design (RWD), API Integration, Vercel, React Redux, Ant Design, Zustand, User Interface (UI)

Software Engineer

2019 - 2020

3Line Card Management

Built a terminal management system (TMS) to manage the activities of thousands of POS terminals owned by banks used to monitor their agents' actions and manage their revenue.
Developed the front end for an agency banking application called Freedom Network. Thousands of agents use this application across Nigeria to process transactions, such as internet subscriptions, airtime recharge, transfers to banks, and more.
Built different versions of Freedom Network for three other banks during my time with 3Line. All the applications I built for 3Line are still in use still today.

Technologies: Bootstrap, CSS, HTML5, Context API, JavaScript, React, TypeScript, Redux, jQuery, Software Development, SCSS, Slack, Next.js, Tailwind CSS, Third-party Integration, Deployment, Web Development, Server-side Rendering (SSR), Front-end, PostgreSQL, ES5, GraphQL, Material UI, Jira, Visual Studio Code (VS Code), Git, Node.js, Firebase, HTML, Figma, GitHub, Contentful, ECMAScript (ES6), Pixel Perfect, Express.js, Full-stack, Minimum Viable Product (MVP), RESTful Services, Amazon Web Services (AWS), Progressive Web Applications (PWA), Authentication, APIs, JavaScript Testing, Mobile First, Search Engine Optimization (SEO), CI/CD Pipelines, Email Templates, Responsive Email Templates, Fintech, Responsive Web Design (RWD), API Integration, Vercel, MongoDB, React Redux, Ant Design, Zustand, User Interface (UI)

Experience

Property Search Web and Mobile Application

https://expert.propertyfinder.ae

A marketplace that offers options for properties to buy and rent, from apartments to villas, townhouses, and penthouses. and a variety of other real estate properties.

I worked alongside their team members to move all their web and mobile apps to a single stack using React Native. I led the development of the design system, which was built with React Native. I also worked on building features for the initial release to production for the web and mobile applications.

Online Collaboration Tool

https://www.mural.co

Mural is a US-based growth-stage startup that provides a solution to enable innovative teams to think and collaborate visually to solve problems. They provide a digital workspace that enables visual collaboration. My role was to work with other members of the team to take an existing online collaboration tool that is built for tablets and desktop apps and to increase velocity for their core application canvas web view on their cross-device team. This is to help users run the application seamlessly on iPad and other tablets in browsers, not just in-app. The tool should work seamlessly on the web, with no loss of experience in the browser compared to the desktop.

Open English Junior Web Lesson Player

The product (Open English Junior) is an English Language Learning platform with both on-demand content and personalized, live classes 24 hours a day, seven days a week, with teachers who are all native English speakers. I worked with one more person to build from scratch the web platform using React Native Web and TypeScript and got it delivered within 14 weeks.

Bolt Internal Web Application

https://www.gobolt.com

A leading logistics company in Canada that provides logistics and delivery services to clients across North America. I worked remotely as a freelance contributor (full-stack) on both the front-end and back-end codebases of the internal web application of the organization with teammates from several countries world and across different time zones. Adding new features and also optimizing existing ones made the operations of the organization smoother.

Advancly (Advancly Spark, Advancly Embed, Advest)

https://www.advancly.com

This B2B2C fintech product supplies accessible finance through digital platforms, connecting lenders with loan seekers across Africa. As the front-end and mobile team lead, I managed the team to build a mobile app for funders and investors (Advest) and four front-end apps for Administrators, Borrowers (Advancly Embed), Funders and Investors (Advest), and Aggregators (Advancly Spark). I joined this project at the very beginning, and now the project has helped process hundreds of millions of dollars in the last three years for millions of customers across Africa.

Advancly Mobile App

https://apps.apple.com/ng/app/advancly/id1609750373

A mobile application that facilitates investments for users all around the world. This application can be used by users to make new investments, add money to their balance, liquidate their investments, track how Advancly is using their investments, etc. I worked on this project from scratch and got it deployed within two months.

Skills

Languages

SCSS, TypeScript, JavaScript, CSS, HTML5, ES5, GraphQL, HTML, ECMAScript (ES6), Swift, Sass, Gherkin

Frameworks

React Native, Redux, Bootstrap, Next.js, Material UI, Tailwind CSS, Express.js, Ant Design, Cypress, Flux, Jest, Jasmine, NestJS

Libraries/APIs

React, Node.js, REST APIs, React Native for Web, React Navigation, React Redux, Context API, jQuery, React Router

Tools

Git, Slack, Jira, Expo, Figma, Expo.io, GitHub, JavaScript Testing, Redux Toolkit, OneSignal, Cucumber

Paradigms

Mobile Development, Search Engine Optimization (SEO), Cross-platform, Responsive Web Design (RWD)

Platforms

Android, iOS, Visual Studio Code (VS Code), Contentful, Mobile, Vercel, Firebase, Amazon Web Services (AWS), Docker

Storage

PostgreSQL, MongoDB

Other

Software Development, Storybook, Front-end, Server-side Rendering (SSR), Web Development, Mobile App Development, Pixel Perfect, Design Systems, Push Notifications, Mobile Payments, Subscriptions, Full-stack, Minimum Viable Product (MVP), RESTful Services, Progressive Web Applications (PWA), Authentication, APIs, Mobile Apps, Mobile First, CI/CD Pipelines, Mobile Applications, Email Templates, Responsive Email Templates, Fintech, API Integration, Single Sign-on (SSO), Zustand, User Interface (UI), Deployment, Third-party Integration, Geolocation, Monorepos, Styled-components, TypeORM, SEO Marketing

Education

2013 - 2017

Bachelor's Degree in Computer Engineering

Federal University Oye Ekiti - Ekiti, Nigeria

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