Open to global remote opportunities

👋 Hello, I'm

Adetoun
Olayemi

I'm a  Senior Frontend Engineer |

Building scalable, user-first web experiences — from payment gateways processing ₦3B+/month to mentoring the next wave of engineers.

View Projects Download CV
Adetoun Olayemi
10+ Years Exp.
React / TS
Lead FE
₦3B+ (~$2M+/mo)
01 — About

Who I Am

Adetoun Olayemi

Experienced Senior Frontend Engineer and Technical Trainer with 10+ years of expertise specializing in JavaScript and modern frontend frameworks. Proficient in building scalable, user-friendly web applications with deep expertise in React, Vue.js, TypeScript, and performance optimization.

I've scaled a payment gateway from scratch to processing ₦3 billion/month (~$2M+), led frontend teams, reduced legacy codebases by 50%, and trained hundreds of developers at The Bulb Africa and New Horizons. Currently expanding into backend development with Java (Spring Boot) and React Native.

10+ Years Experience
20+ Projects Delivered
6 Companies
100+ Devs Trained
Lagos, Nigeria toun.olayemi2@gmail.com 07057824862
02 — Skills

Technical Expertise

Frontend Core

HTML5CSS3JavaScript ES6+TypeScript

Frameworks

ReactNext.jsVue.js

Styling & UI Libraries

Tailwind CSSStyled ComponentsChakra UI Material-UIAnt DesignSassFigma

State Management

Redux ToolkitContext APIRTK Query React QuerySWR

Testing & Build Tools

JestReact Testing Library ViteWebpackBabel

Backend & DevOps

Node.jsRESTful APIsJava Spring Boot† GitDockerCI/CD FirebasePostman

Mobile Development

React Native†Flutter†

† Currently learning / early-stage experience

03 — Experience

Career Journey

Senior Frontend Engineer

Etranzact — Credocentral Payment Gateway

Jan 2022 — Present
HybridReactTypeScriptRedux ToolkitFramer Motion
  • Spearheaded the complete redevelopment of the payment gateway from scratch — sole FE Engineer to Lead
  • Scaled transaction volume from ₦10M/month to ₦3B+/month within the first year
  • Built a rich, reusable component library using Chakra UI and Styled Components
  • Led daily standups, mentored junior devs, and drove coding standards across the team
  • Engineered Social Commerce, Payment Links, Invoices, and Admin Portal features

Lead Frontend Engineer

Aku Fintech

Feb 2025 — Present
ContractRemoteReactTypeScript
  • Built two complete payment gateway ecosystems — Nectaros and KiwiFinance — each comprising a full Gateway, Merchant Portal, and Admin Portal
  • Developed AkuId, the identity layer powering authentication and user management across the entire Aku ecosystem
  • Built the Web UI for AkuPay, a crypto-backed digital wallet (PayPal-like experience, blockchain-powered)
  • Sole owner of all frontend architecture decisions, delivery, and ongoing maintenance across all four platforms

Frontend Engineer

FrontEdge

May 2023 — Mar 2026
RemoteReactTypeScriptMaterial-UITailwind CSS
  • Inherited a legacy, bloated codebase and reduced its size by over 50%
  • Built new features and restructured existing components for maintainability and scale
  • Contract extended due to significant impact on codebase and team productivity

Technical Trainer

The Bulb Africa

Sept 2022 — Jun 2023
On-SiteJavaScriptTypeScriptReact
  • Led comprehensive training on HTML, CSS, JavaScript, TypeScript and modern web practices
  • Designed curriculum for beginner and intermediate learners with hands-on workshops
  • Provided mentorship and live project demonstrations to prepare students for industry

Frontend Engineer

DuroNetworks

July 2021 — Jan 2022
HybridReactMaterial UI
  • Designed and developed key features for the Split Multi e-commerce platform
  • Took full ownership of the payment-splitting feature end-to-end
  • Applied industry best practices to create scalable and maintainable components

Frontend Engineer & Technical Consultant

Tech 9

Oct 2018 — Present
FreelanceReactTypeScriptTailwind CSS
  • Delivered freelance consulting and frontend development for multiple clients
  • Sourced, managed, and mentored development teams for client projects
  • Led frontend architecture decisions to ensure scalability and long-term maintainability

Computer Science Trainer & Database Admin

Supreme Education Foundation School

Jan 2018 — July 2021
On-SiteHTML/CSS/JSWordPressMySQL
  • Instructed students in web development, animation, and game programming
  • Managed school website and database; introduced automation for timetable generation

Technical Trainer & Web Developer

New Horizons Computer Learning Centre

Feb 2014 — Jan 2018
Full-timePHPJavaScriptMySQLjQuery
  • Taught web design and advanced development covering PHP, JavaScript, MySQL, jQuery
  • Delivered Microsoft Certified Solutions Developer (MCSD) certification training
  • Led both weekday and weekend classes for professionals and individual learners
04 — Projects

Featured Work

A selection of projects across product, freelance, and open work.

Featured

Credocentral Payment Gateway

Spearheaded the complete frontend redevelopment of a payment gateway — from scratch to processing ₦3B+/month. Led architecture, component library, and team growth.

ReactTypeScriptChakra UIRedux ToolkitFramer Motion
Live Site

FrontEdge

Inherited a legacy codebase and reduced redundant code by 50%. Built new features and restructured architecture for scale. Contract extended for impact delivered.

ReactTypeScriptMaterial-UITailwind CSS
Live Site
New

Nectaros — Payment Gateway Ecosystem

End-to-end payment gateway ecosystem built as Lead FE at Aku Fintech. Includes a full Gateway, Merchant Portal, and Admin Portal — all architected and delivered solo.

ReactTypeScriptFintech
Live Site
New

KiwiFinance — Payment Gateway Ecosystem

Second complete fintech ecosystem built for Aku Fintech — Gateway, Merchant Portal, and Admin Portal. Currently maintained as part of an ongoing contract engagement.

ReactTypeScriptFintech
Live Site
New

AkuId — Ecosystem Identity Platform

The identity backbone of the Aku ecosystem. AkuId handles authentication and user management across all Aku platforms, ensuring a seamless, unified identity for every user.

ReactTypeScriptAuthIdentity
Internal Platform
New

AkuPay — Crypto-Backed Digital Wallet

Web UI for AkuPay, a PayPal-like digital wallet backed by crypto. Built the complete frontend experience for sending, receiving, and managing digital assets across the Aku ecosystem.

ReactTypeScriptWeb3Fintech
In Development

ThePluggShop

Fashion e-commerce platform. Initiated the codebase, established the architectural foundation, and mentored the engineer who carried it forward.

ReactTypeScriptStyled ComponentsChakra UI
Live Site

TheYutes

Consulted and initiated the codebase, setting up scalable frontend architecture. Delivered reusable components to accelerate the team's feature development.

ReactStyled ComponentsReduxChakra UI
Live Site

Split Multi

E-commerce platform enabling customers to split payments for products. Conceptualized and built the full frontend architecture from scratch.

ReactMaterial-UI
Live Site
VueJs Image Editor

VueJs Image Uploader & Editor

Image uploader and editor with drag-and-drop upload, image manipulation tools, and export functionality.

Vue.jsCSS
Live Site

House of Law Website

Professional website for a law firm showcasing services and case studies, with full mobile responsiveness and cross-browser compatibility.

HTMLCSSJavaScript
Live Site
05 — Currently

What I'm Up To

🔨

Building

  • EVAS — Etranzact Virtual Account Service · Merchant & Admin portals
  • Debit One — Etranzact Direct Debit Service · Merchant & Admin portals
  • E-Invoicing — Etranzact invoicing platform · end-to-end portal build

Lead Frontend Engineer — Etranzact (Merchant Service division)

📚

Learning

Java Spring Boot for backend development, deepening React Native skills for cross-platform mobile, and exploring Flutter — rounding out a full-stack profile.

🔍

Exploring

Web3 frontend architecture patterns, fintech system design at scale, and micro-frontend strategies for large, multi-team codebases.

🎯

Open To

Senior / Lead Frontend roles at global remote-first companies. Teams solving meaningful problems at scale. Technical training and consulting partnerships.

06 — Testimonials

What People Say

"

Adetoun is one of the most talented frontend engineers I've had the pleasure of working with. Her ability to architect scalable systems while maintaining exceptional code quality is remarkable — she elevated our entire team's standards.

Faith Oluokun

Product Manager · Aku Fintech
"

Working with Adetoun on the Credocentral gateway was an incredible experience. She took full ownership from day one, made bold architectural decisions, and delivered results that scaled far beyond what we imagined at launch.

Stephen Obi

Engineering Lead · Etranzact
"

As a student, Adetoun's training sessions were transformative. She has a rare gift for making complex frontend concepts accessible, and her passion for the craft is genuinely contagious. I landed my first dev role within months.

Brown Memoye

Frontend Developer · Etranzact
07 — Contact

Let's Work Together

Whether you have a project, need a technical consultant, or want to discuss training — I'd love to hear from you.

Email

toun.olayemi2@gmail.com

Phone

07057824862

LinkedIn

Olayemi Adetoun

GitHub

Valenteeena

Location

Lagos, Nigeria