Senior Software Engineer & Technical Lead

Hands‑on technical leadership across complex Next.js and React platforms, digital transformations, technical SEO, performance, migrations and platform architecture.

  1. BBC Future Media
    BBC Future Media

I'm John, an award‑winning software engineering specialist based in sunny cloudy Brighton, UK.

I am a friendly and enthusiastic senior engineer and technical leader backed by over twenty‑three years of hands‑on experience.

I help teams and clients design, build and improve websites, applications and web platforms, pairing architecture, delivery judgement and hands‑on TypeScript, React, HTML and CSS.

My portfolio is diverse; I work with global clients, solving real-world problems, including:

  • helping develop the online identity of Volvo's emerging premium EV brand;
  • helping a major browser vendor explore AI‑driven tools for clearer, more useful browsing experiences;
  • overseeing the digital rebranding of a chain of much‑loved high‑end department stores;
  • ... and revamping the online presence of a local food truck so that their customers knew where to find them.
More about me

Featured Case Studies

  1. Featured case study

    Lotus
    Cars

    Long‑running front‑end development for Lotus Cars, supporting its WordPress website, vehicle configurators, model pages, pre‑owned sales, and dealership tools.

    Screenshot of the Lotus website; part of John Kavanagh's selected project work.
  2. Featured case study

    Virgin Atlantic
    & Holidays

    Lead engineer on this massive replatforming project, unifying twelve disparate applications under a new headless architecture with React and Next.js.

    Screenshot of the Virgin Atlantic & Holidays website; part of John Kavanagh's selected project work.
  3. Featured case study

    John Lewis
    & Partners

    Senior developer as part of team 'Findability'. Led the digital implementation of the 'John Lewis & Partners' rebrand alongside new feature development, user journey optimisation, and performance improvements.

    Screenshot of the John Lewis website; part of John Kavanagh's selected project work.

How I Usually Help

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Previous Clients

Availability

I am currently leading a new digital transformation engagement, with availability for selected consulting and engineering delivery from September 2026. Short diagnostics or urgent work may be possible sooner.

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Have a complex web platform issue?

Tell me what is blocked, what has changed, and what needs to be true after the fix. I'll come back with a practical next step.

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