John Ayeni
Senior Software Engineer (Frontend) at Adyen
Amsterdam, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolJohn Ayeni is a Senior Frontend Engineer based in Amsterdam with 9 years of experience building performant, user-focused web applications across payments, crypto, and marketplaces. He has driven measurable product impact—reducing customer service backlog by ~60%, improving shipping label success by 7.7%, and boosting platform performance by up to 60%—while leading migrations to modern frameworks like Next.js. His background spans startups and scale-ups (including Paystack, Busha, Catawiki and co-founding a logistics API startup), giving him a strong mix of product intuition, developer-experience tooling, and cross-functional collaboration. Curious and outcome-oriented, he pairs hands-on frontend architecture with internal observability and testing initiatives to improve both user and developer workflows.
9 years of coding experience
7 years of employment as a software developer
Bachelor of Science - BS Computer Science, Bachelor of Science - BS Computer Science at Covenant University
Stackoverflow
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Github Skills (46)
archived10
paystack10
upi9
payment-gateway9
payment9
persist8
stable8
inline8
usereducer8
vuejs28
vuex7
square7
payment-service7
hugo7
payment-integration7
Programming languages (6)
Github contributions (5)
johnayeni/johnayeni
Jul 2020 - Dec 2024
Contributions:17 pushes, 1 branch in 4 years 5 months
johnayeni/filter-app-vue-js
Apr 2018 - Sep 2019
This repo is for the tutorial of building a simple filtering app with vue js 🔥 🔥 🔥
Contributions:9 commits, 1 PR, 8 pushes in 1 year 5 months
vue-jsvuejs2vuevuexfiltering
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