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. Polestar
    Polestar

I'm John, an award‑winning independent software engineering specialist based in sunny drizzly 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:

  • engaging businesses, politicians, academics, and world leaders to shape global agendas;
  • helping prospective car buyers find just the right configuration for their next sports car;
  • helping develop the online identity of Volvo's emerging premium EV brand;
  • ... and creating a digital home and web shop for a fledgling Sussex vineyard.
More about me

Featured Projects

  1. 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.
  2. 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.
  3. Featured Project

    Lotus
    Cars

    The automotive e‑commerce website, configurator, and online marketing channels for the much‑loved British sports car manufacturer: Lotus. Built on top of WordPress with HTML5, CSS and JavaScript.

    Screenshot of the Lotus website; part of John Kavanagh's development portfolio.

How I Usually Help

All services
Skip past clients

Previous Clients

Availability

I am currently leading a new digital transformation engagement. I have limited availability for selected consulting and engineering delivery from September 2026.

View calendar
  1. Enquire
  2. Enquire
  3. Enquire
  4. Enquire

Latest Articles

All articles

Planning a platform change?

I help teams make difficult platform work clearer, from architecture decisions and migrations to launch recovery, performance, and search visibility.

Get in touch