Dojo
Navigation redesign
I led a team of three developers on a full rebuild of the main navigation on dojo.tech, the part of the site every visitor uses to find their way around.
Matt Maclennan · Frontend lead · Freelance and full-time · London
I help e-commerce and product teams ship frontends that last.
12 years of React, TypeScript and Next.js for Sky, Dojo, END. Clothing and River Island. I take on builds and migrations, design systems and headless CMS setups, hands-on or leading your developers.
Worked with
Services
How I can help
Fixed-scope projects, or embedded with your team. Remote, or on site in London.
React and Next.js builds and migrations
New builds, or moving an ageing frontend onto React and Next.js without stopping the business.
Moved Kriya off AngularJS onto React and Next.js during a rebrand, and led a monorepo migration and checkout refactor at END. See how
Design systems and component libraries
Shared components that keep several products, brands or teams consistent, rolled out without regressions.
Led the button redesign and migration across NowTV, Peacock and SkyShowtime for Sky's OTT department. See how
Headless CMS your team can run
CMS setups and workflows that let marketing and content teams publish without filing developer tickets.
Dojo's international markets were building their own pages within two weeks, with no dev requests. At Sky, I replaced hand-curated seasons and episodes with GraphQL data. See how
Performance, testing and CI
Faster, steadier sites, with the test suites and pipelines that keep them that way.
Cut P95/P99 latency by over 60% at Dojo with Redis caching, and introduced Vitest and Playwright suites adopted org-wide.
Interim frontend lead
Someone to lead your frontend developers, set standards and help you hire, for as long as you need.
Led around 7 frontend developers at END., where I also hired 6, and led a team of 3 at Dojo. See how
Something else?
If it's frontend and it's stuck, I'd like to hear about it.
Start a project
Selected work
Recent projects
Performance work, redesigns and migrations, shaped by user research and shipped with care.All case studies
Sky
Button redesign across Sky
I led the redesign and migration of button styles across the Sky ecosystem, including NowTV, Peacock and SkyShowtime, managing the rollout so the new designs landed without regressions.
Sky, for Peacock
Regional Sports Networks ZIP code search
On Peacock, the networks you can add depend on where you live. I built the first shared GraphQL layer in Sky's OTT department to power the ZIP code search. You enter your home ZIP code, the GraphQL layer fetches the packages available there, and the frontend shows the matching networks and prices.
Sky, for Peacock
Automated season and episode listings
Season and episode listings for every show used to be curated by hand in the CMS. I moved them over to GraphQL, so each page now pulls in its seasons and episodes automatically.
END. Clothing
END. Launches
User research showed key details about hyped launches weren't prominent enough. The redesign put launch dates front and centre and blended product imagery into a new card layout, then spread imagery down the product page to keep people engaged until they entered the draw.
River Island
Styling framework and redesign
I headed up a styling framework for River Island's developers, with training alongside it. A simpler, AB-tested navigation with fixed behaviour on scroll was one of the most visible changes.
Kriya (formerly MarketInvoice)
Rebrand and UI library
A rebrand was the chance to move a FinTech site off AngularJS and onto React and Next.js, with a Storybook component library that made the UI reusable and easier to manage.
About
Hands-on engineer, team lead, and everything in between.
I'm a frontend developer with over twelve years' experience, most recently leading engineering teams at Dojo and Sky. I care about quality over shipping fast, and about making a lasting difference for the people who use what I build.
Alongside the code, I've led teams day to day and at project level: stakeholder management, mentoring, hiring and requirements gathering.
Away from the keyboard you'll find me golfing, climbing or running.
- years in frontend, since 2013
- 12+
- cut in P95/P99 latency at Dojo
- 60%+
- for Dojo's international markets to self-serve CMS pages, with no dev requests
- 2 weeks
- average session on dojo.tech after the navigation redesign, up from 59s
- 2m12s
- more launch volume at END. after the Launches redesign
- 13%+
- developers led at END.
- 7
Experience
Where I've worked
Every role since 2013, on a page of its own.The full timeline
Frontend
React, Next.js, TypeScript, Node.js, GraphQL, Astro, Styled Components
Testing
Vitest, Jest, React Testing Library, Playwright, Cypress
Platform
GitHub Actions, Kubernetes, GCP, Jenkins, Storyblok
Leadership
Mentoring, hiring, stakeholder management, AB/MVT testing
Contact
Got a project or a role in mind?
I take on freelance frontend work, as a fixed-scope project or embedded with your team. I'm also open to the right senior or lead role. Tell me what you're building.
Or email hi@mattmac.dev