Contract Software Engineer

  1. HSBC Corporate Banking
    HSBC Corporate Banking

I'm John, an award‑winning contract software engineer and front‑end web development specialist based in sunny cloudy Brighton, UK.

I am a friendly and enthusiastic Principal Software Engineer and Technical Lead backed by over twenty‑three years of hands‑on experience.

I deliver bespoke websites, applications, and considered user experiences, pairing front‑end architecture with modern JavaScript (or TypeScript), React, HTML and CSS.

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

  • leading the headless replatforming of a much loved chain of restaurants, modernising its UK & Ireland web estate;
  • helping develop the online identity of Volvo's emerging premium EV brand;
  • engaging businesses, politicians, academics, and world leaders to shape global agendas;
  • ... and optimising the online ordering system of Brighton's last independent milkman.
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How I usually help

Featured Projects

  1. Featured Project

    LEGO

    Senior developer producing an all‑new e‑commerce platform with React. Designed to handle high traffic volumes and support multi‑language and multiple currencies.

    Screenshot of the LEGO website; part of John Kavanagh's development portfolio.
  2. Featured Project

    Polestar

    Senior developer working on this highly animated, interactive website and automotive configurators for Polestar, once Volvo's fledgling go‑faster brand, now turned EV company. Built with Gatsby, React, and TypeScript.

    Screenshot of the Polestar website; part of John Kavanagh's development portfolio.
  3. Featured Project

    The World Economic
    Forum

    Senior JavaScript developer heavily involved in delivering a React‑based rebuild of the World Economic Forum online platforms, including leading the introduction of new user features.

    Screenshot of The World Economic Forum website; part of John Kavanagh's development portfolio.
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Previous Clients

Availability

I am currently leading a new digital transformation project. I expect to be available for my next challenge from September 2026.

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  1. Sep

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Want to find out more?

I've been delivering standout websites and applications for exceptional clients for over twenty-three years. Whether you've got a project underway or just an idea forming, drop me a line and let's see what we can build together.

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