Callum Bonnyman

Senior Frontend Engineer · Oxford, UK

Hi, I’m Callum.

I’m a senior frontend engineer in Oxford with twelve years of experience. I’m currently a software engineer at plugg, and I also run Cherwell Studio, my web agency for businesses that need a clearer, more effective website or digital product. This site is my personal profile and CV; for project enquiries, head to Cherwell Studio.

Callum Bonnyman standing in front of a painted mural

Status

Available for projects

Taking on client work through Cherwell Studio.

My agencyCherwell StudioWebsites and digital products that make businesses work better.Own productBanburyshireRust compiled to WebAssembly on Cloudflare Workers. sigmx handles every interaction in under 10 kB.Own productCotswolds InfoTourist guide to the Cotswolds: villages, market towns, gardens and stately homes.

Client work

Illinois HumanitiesCultural nonprofit · Craft CMS
Peggy Notebaert Nature MuseumMuseum · Craft CMS
First Lady & Cruise ChicagoTourism · Craft CMS
Triumph Motorcycles parts finderDEPT · React micro-frontend

Stack

TypeScript
React
Next.js
Astro
TanStack Start
Rust
WebAssembly
Cloudflare Workers
PostgreSQL
Sanity
Craft CMS
Storybook
Tailwind CSS

Experience

plugg · Software Engineer2026 – Present
Freelance · Senior Frontend Engineer2022 – Present
Transom Design · Frontend Engineer2022 – 2023
DEPT® · Frontend Engineer2021 – 2022
netzstrategen · Frontend Developer2019 – 2021
LFA Machines · Full Stack Developer2014 – 2019

Work with me

Start a project at Cherwell Studio

GitHub LinkedIn

Off the clock

callum.co.ukTravel notes, posted occasionally.
manhole.galleryManhole covers spotted around the world.
perpetual.pizzaThe never-ending pizza, a decade-old joke.