Senior engineer · Front-end specialist

Interfaces that work for everyone.

I’m Sean, a senior engineer with fifteen years shaping the web. Front-end is my speciality, though I work across the stack. I care about speed, accessibility, and interfaces that feel good to use. Currently at Deskpro.

Open to freelance workWiltshire, UK

Read the blogAbout me

Work

Things I’ve built

Concept
Bramblewood
A concept site for a tree surgery firm: an image-led editorial layout with a growth-rings motif, a photo gallery and a full-bleed canopy call to action.
Next.js
Tailwind
Design
Concept
Aster Dental
A concept site for a private dental practice: a calm, premium identity built around an arch motif, with priced treatments and a membership plan.
Next.js
Tailwind
Design
Concept
Fettle
A concept site for a local plumbing and heating firm: a dark blueprint hero, a copper pipe-joint motif, a symptom-led enquiry flow and an FAQ.
Next.js
Tailwind
Design
Concept
BLACKWICK
A concept site for a bespoke tattoo studio: dark editorial identity, oversized type, and a clear booking flow.
Next.js
Tailwind
Design
Concept
Marchmont & Vane
A concept site for an upmarket private-client law firm: a full-bleed library hero with overlaid text, a restrained charcoal-and-gold identity and Cormorant type.
Next.js
Tailwind
Design
Concept
Hollow Ash
A concept site for a boutique countryside retreat: a full-bleed farmhouse hero, a working reservation bar, rooms with rates and a warm editorial feel.
Next.js
Tailwind
Design
Concept
The Gull Picture House
A concept site for an independent Cornish cinema: a bold screen-print identity, a Now Showing programme with poster art and showtimes, and a members' club.
Next.js
Tailwind
Design
Next.js
seankerwin.dev
This site. A ground-up rebuild on Next.js 16, Tailwind v4 and MDX, with view-transition page morphs, light and dark themes, and accessibility and performance built in from the start.
Next.js
Tailwind
MDX
TypeScript
Shotty
A tiny macOS menu-bar screenshot annotator and beautifier. Capture a region or window, mark it up with arrows, blur and text, then drop it on a gradient background. Native Swift, no dependencies.
Swift
AppKit
macOS

Capabilities

What I do

Frontend

React
Next.js
TypeScript
Tailwind
Vue / Nuxt

Backend

Node.js
Laravel
PHP
REST APIs

Craft

Accessibility (WCAG)
Performance
Design systems
Testing

Beyond the browser

Swift
Native macOS
Tooling & CI

Approach

How I work

01
Accessibility first
Every interface should work for everyone. WCAG AA is the floor, not the ambition.
02
Fast by default
Performance is a feature. I keep bundles lean and interactions instant.
03
Clean, documented code
Code is read far more than it is written. I ship things that are easy to change.

Writing

Latest posts

All posts

Interfaces that work for everyone.

Things I’ve built

Bramblewood

Aster Dental

Fettle

BLACKWICK

Marchmont & Vane

Hollow Ash

The Gull Picture House

seankerwin.dev

Shotty