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Olaseinde Biyi

Senior Fullstack Developer

I specialize in creating accessible and inclusive digital products and experiences for the web and mobile applications.

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ABOUT

My first exposure to software development was in 2016, When I thought of building an QR payment solution and sought out to gain necessary skills. Fast-forward to today, and I've had the privilege of building innovative products across the FinTech, EduTech and insurance indutry alongside working with some of the best minds,

My focus these days is building global solutions while developing state-of-the-art products at Binta Financial. As a hubby, I love teaching about programming and I've launched a platform that connects industry experts with new entrants, teaching them relevant career specific technologies.

When I'm not at the computer, I usaully read books to hone my entrepreneurial side, play video games and enjoy cooking and great meals (after enough youtube videos ofcourse)

EXPERIENCE

2024

PRESENT

Senior full-stack developer

Binta Financial

Binta is a on goal to financially empower immigrants moving across border, making sure the are able to get loans and easily access financial services. Also, building solutions for landlords and tenants, to securely report their rent payment, helping them build their credit score.

▹
Migrated the old legacy frontend code from individual projects to an NX monorepository
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With React native, TypeScript and redux-toolkit(RTK QUERY), I manage the company's Mobile Application
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Led the migration of the backend infrastructure to AWS CDK, managing different cloud formation templates for different environment
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Built the company's core data migration service, connected to by banks to get immigrants data
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Built a logs ingestion tool, able to ingest upto 1 million logs, visualized in Elastic Search and an application monitoring tool

React

React-Native

NestJS

Monorepository - NX

Typescript

AWS

Docker

Kubernetes

Radix UI

Microservice

Redis

BullMQ

CQRS

Elastic Search

Grafana & Prometheus

2023

2024

Senior front-end developer

Aladdin Digital Bank

As a Digital bank, the company's focus is building global products like international remittance solution, business accounts for SMEs, excess charge recover and loan recovery solutions. A rich team of developers with deep knowledge of engineering

▹
Built and developed the frontend of the company's business account management solution with React, Next.js, Chakra UI and tailwindCSS
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With React native, TypeScript and redux-toolkit(RTK QUERY), I manage the company's Mobile Application
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Collaborated with designers and other developers to ensure thoughtful and consistent user experiences across Aladdin iOS and Android mobile apps
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Leveraging cloudinary image transformations, I was able to reduce the web application loading time by 60%, ensuring a more optimized user experience
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Implemented a cron architecture to automatically assign bank statement analysis, cutting 70% of the initial wait time.

React

React-Native

Micro-frontend

Typescript

Cloudinary

Native-base

TailwindCSS

Chakra UI

2022

2023

Frontend developer

Frowork

Following a monorepo architecture, I developed the frondend of a talent sourcing platform. Developed re-usable components that can be used across mobile and web platforms, ensuring styling consistency

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Create a structured and organised codebase, facilitating efficient collaboration and code sharing across the project
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Implemented stripe for international money remittance and flutterwave for transactions involving Africa countries
▹
Using chakra UI, I structured a set of design tokens used globally

React

React-Native

TailwindCSS

Apollo-Client

Netlify

Chakra UI

2022

2020

Full stack developer

Mayrian

Worked a full stack developer, budiling solutions as per client's requirements

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Designed a blog system enabling users with admin privileges to post and manage blog posts
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Utilized AWS S3 storage solutions while managing the server droplet on digital ocean
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With Next.js, I developed a real-estate managment web application

Next.js

React-Native

NodeJS

Express

AWS

Typescript

Nest.js

MongoDB

2020

2020

Front-end developer

Kwaba.africa

Developed the frontend of a loan disbursement software, leveraging partner's API for credit scoring and loan worthiness of the customer

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Migrated the company's codebase to a mono-repo architecture, increasing performance and code readability.
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Using firebase's firestore, I implemented a push notification service that drive engagement with users
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Implemented a cron flow to notify users periodically
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Created a design system using native-base, enabling light and dark theming

React-Native

Typescript

Redux-toolkit

Navtive-base

Microsoft Appcenter

Firebase

2020

2019

Frontend developer

Chow.africa

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Designed the customer facing side of the application, handling request from over 1000 users
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Created prototypes of new applications or features to demonstrate potential functionality to stakeholders.
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Designed a way-of-working document that specifies the code pattern, file naming conventions, and file length.

React

React-Native

Next.js

Typescript

2019

2019

Full stack developer (PART TIME)

Jamasoft Concept Limited

Deliver high-quality, robust production code for diverse array of client projects. Also, took some programming tutoring for the compnay's intern.

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Leveraged a third-party API to provide services like airtime recharge, internet subscription and money transfer
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Led effort to specify, improve, and implement functionality of UI and UX best practices.
▹
Conducted unit testing and integration testing for functionality.

React

React-Native

NodeJS

Express

Typescript

2019

2019

Frowork developer

Code Inclusive Limited

Designed and developed diverse software solutions for the company's client

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Built an eduTech platform, with other developers, powering over 5000 students.
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Built a parcel delivery application, with real-time order tracking functionality, driving a 40% increase in revenue upon launch.
▹
Built property management software, servicing over 300 users.

React

React-Native

NodeJS

Express

AWS

Typescript

PROJECTS

A currated list of some of the projects I have worked on as a freelancer and some other projects I develop to tackle some technicalities. Some of these projects, I worked on them as a solo developer, some I worked on as part of a team

Full stack developer

A food delivery platform, where users can order either on the web app or mobile app

React

React Native

AWS

NestJS

PostgresSQL

Socket.io

Typescript

Kafka

Full stack developer

A platform that enables a business to sell paper bags

React

VPS

NestJS

MongoDB

Typescript

Frontend Engineer

A virtual e-learning platform for course creators, combining multiple tools like video conferencing, calendar scheduling.

React

AWS

NodeJS

WebRTC

Socket.io

Typescript

Frontend Engineer

A platform that connects users with stores and restuarants that sell food and groceries

React

TailwindCSS

Next.js

Micro front

Typescript

Frontend Engineer

A mobile application that allows for easy invoicing of sales and transactions

React native

Native-base

Typescript

NodeJS

Full stack Engineer

An event booking platform, enabling customers to book the service of different service providers

Next.js

React-Native

NodeJS

Nest.js

Typescript

OPEN SOURCE

I enjoy collaborating on projects with other developers across the world. Here are projects I actively contribute.

Imagine

Linky is an open-source iOS app that empowers iPhone users to perform a multitude of tasks—such as opening apps, shortcuts, and URL.

React native

Native-base

Cal.com

A scheduling application, with easy to use interface

Next.js

Trigger.dev

Create long-running jobs directly in your codebase with features like API integrations, webhooks, scheduling and delays.

React

Get In Touch

I'm actively looking for opportunities and roles that fits with my expertise, I look forward to sharing more of my experience and ultimately providing value to your team.