About me

Hi there, I’m Harry; I am an award-winning Consultant Front-end Architect, writer, and speaker from the UK. I help companies all over the world write better quality, more manageable, more scalable user interfaces. I am available for work.

On stage at beyond tellerrand. Photo by Stefan Nitzsche.

Named Young Developer of the Year (2014) by net magazine, I was previously a Senior Developer at BSkyB, and have consulted with clients including the BBC, the NHS, Booking.com, and the Financial Times. I specialise in architecting, writing, and scaling CSS for large sites, apps, and products in large-team environments.

I write, work, speak, and run workshops across the globe covering pragmatic, product-led approaches to building and scaling large front-ends for long-running projects and products. I specialise in OOCSS, architecture, scalability, front-end performance, and mobile and responsive web design and development.

I’ve got a crush on Harry Roberts…

Andrew Clarke

I am a member of Smashing Magazine’s Experts Panel, co-author of a book on new approaches to web development, and lead and sole developer of the increasingly popular, open-source, OOCSS framework inuitcss. For a more comprehensive overview, please see my CV.

Most importantly, I am available for hire to help people build great products. Workshops, consultancy, training, advice, development, and more are all available to clients of all shapes and sizes, all over the world:

Hire me.


CSS Wizardry makes use of many great tools and services; tools and services that make my life as a developer much, much simpler.

CSS Wizardry is built on Jekyll, an open source static site generator. This is hosted using GitHub Pages.

The CSS is written in Sass, and built on top of inuitcss. inuitcss is a free, open-source, Sass-based, OOCSS framework with a strong focus on performance, scalability, and a small footprint. This is then built into ITCSS, a proprietary CSS architecture of mine which is designed to aid the growth and maintainability of CSS projects.

The font used is Open Sans, and is served via Google Fonts. The icons are from the Iconic icon system. The photograph used on the homepage’s masthead is of me speaking at DotYork, and was taken by Jim Poyner.

Responsive testing was made possible by Finch, an incredible tool for exposing local dev sites to the open internet.

CSS Wizardry’s roadmap and task list are viewable on a public Trello board, and all of the code that powers it can be found on GitHub. Feel free to take a look round, but please don’t steal anything.


I am open to interesting and fun consulting gigs, short-term contracts, workshops and any exciting projects working with nice people starting in 2014. If you think you have something we can work together on then get in touch.

Please note that I get a lot of email, so it may take me a while to get back to you. I do try and reply to everyone, no matter how long it might take, but I do also try and prioritise the order in which I respond: client and work-related emails first, then speaking requests, and then general requests for help and advice.

If I do seem to be taking a while to respond, I would not be at all offended if you tweeted at me, or sent me a follow-up email, to remind me to reply.

Twitter: @csswizardry
For informal, quick contact and questions, feel free to fire me a Tweet!
Email: harry@csswizardry.com
For longer enquiries and questions, please send me an email.

Hi there, I’m Harry. I am an award-winning Consultant Front-end Architect, designer, developer, writer and speaker from the UK. I write, tweet, speak and share code about authoring and scaling CSS for big websites. You can hire me.

I am currently accepting new projects for Q4, 2014 Referral scheme


  • inuitcss
  • ITCSS – coming soon…
  • CSS Guidelines


I am available for hire to consult, advise, and develop with passionate product teams across the globe.

I specialise in large, product-based projects where performance and CSS scalability and maintainability are paramount.