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Olusegun Olayinka

Selected work

Recent engagements & ships.

A small set of projects I'm proud of — financial platforms, insurance platforms, and an editorial e-commerce build. Each case study is a short read on what I shipped, how, and what it returned to the business.

Things marketplace hero with editorial typography and featured products.

/01 · 2026

Things — An e-commerce marketplace built for taste

Designed and built an editorial e-commerce marketplace from scratch — storefront, product detail pages, cart, and merchant onboarding — for a client positioning their brand as the antidote to generic online stores.

Next.jsTypeScriptTailwind CSSMDXStripe
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TellerOne dashboard overview with key teller actions and account summaries.

/02 · 2025

TellerOne — A modern banking experience, rebuilt from the ground up

Replaced a legacy jQuery banking interface with a modern React frontend — faster, easier to maintain, and built around the workflows tellers actually use every day.

ReactJavaScriptReduxREST APIsBootstrap
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Unyte Africa marketing landing page hero.

/03 · 2022 — 2023

Unyte Africa — Insurance, made operable

Scaled the frontend of a digital insurance platform serving thousands of policy holders, and rebuilt the operator dashboards that policy teams use every day.

ReactTypeScriptReduxReact Testing LibraryCypress
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9jaPay business banking dashboard overview with account balances and recent transactions.

/04 · 2023 — 2024

9jaPay — Business banking, shipped in five weeks

Led the frontend architecture and delivery of a business banking MVP for Nigerian SMEs. From onboarding through KYC/KYB to transactions, owned end-to-end.

ReactTypeScriptNext.jsGraphQLReact Query
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Hiring a senior frontend lead, or commissioning a portfolio site that finally reads the way you write? Four questions, one tailored quote, no generic price list.

Olusegun Olayinka — portrait
Olusegun OlayinkaLagos, Nigeria