Services

Next.js Website and Application Builds, Migrations, Recovery and Platform Consulting

For new Next.js websites and applications, migrations, launch recovery, performance problems, and livestack issues where senior technical direction would save weeks of drift.

How This Usually Works

  1. Technical Diagnostic

    A focused review of affected routes, templates, deployment behaviour, crawl signals, CMS behaviour, performance bottlenecks, or code paths, followed by a prioritised fix plan the team can take into delivery.

  2. Recovery Sprint

    A short, concentrated engagement for a defined technical SEO, performance, CMS, Vercel, migration, or production issue where the business needs the cause isolated and the first fixes moved quickly.

  3. Embedded Delivery Support

    Senior handson support inside an existing team where architecture, implementation, review, and delivery judgement all matter, especially when the work cannot be handed over as isolated tickets.

  4. Fractional Technical Leadership

    Ongoing senior technical cover for architecture, roadmap, supplier review, delivery risk, hiring shape, and platformownership decisions when the team is not ready to hire permanently.

Talk to me about your technical problem

A short description of the website, platform, or technical problem is enough. I'll read it and suggest the next step.

Other Services

Two sets of hands around hand-drawn component diagrams and interface notes.

Accessibility and Usability Reviews

I still take on focused accessibility and usability review work when a team needs practical fixes rather than a complianceonly report. That usually means looking at templates, components, copy, forms, keyboard behaviour, and the real journeys people rely on.

This often sits alongside technical SEO and performance work, because inaccessible interfaces, weak semantics, and slow journeys tend to show up together.

An Apple MacBook on a desk displaying a code editor with several lines of code.

Codebase Audits and Optimisation

Codebase audits are useful when a product still works, but the team is paying too much for every change. I review structure, repeated patterns, avoidable complexity, rendering cost, and the places where delivery risk is being hidden inside everyday implementation choices.

The output is not a theoretical rewrite plan. It is a practical view of what to simplify, what to leave alone, and where optimisation would make the biggest difference to release confidence.

A wooden desk with laptops, mobile phones, coffee cups, and personal electronics.

Ongoing Support and Maintenance

Some work needs senior followthrough after the first fix has landed. I can stay close to a platform after a launch, migration, recovery project, or concentrated debugging engagement so the team is not left carrying unresolved edge cases alone.

That might mean release support, technical triage, implementation review, small improvements, or helping your team turn a oneoff fix into a maintainable operating pattern.

A close-up photograph of network cables connected to the rear of a switch.

Hosting and Platform Support

This is no longer generic hostingplan work. The useful work sits in the platform behaviour that decides whether a modern site can be released and operated confidently, especially on Vercel, Next.js hosting, and headless CMS stacks.

I work through build failures, environment configuration, DNS and deployment questions, cache and revalidation behaviour, observability, and the decisions that sit between application code and production infrastructure.

A close-up photograph over the shoulder of a person writing into a small notebook.

Technical Writing and Documentation

I still write technical documentation when the work needs someone who understands both the implementation and the reader. That can mean architecture notes, migration decisions, handover material, runbooks, or publicfacing technical content.

Good documentation should reduce repeated explanation, improve onboarding, and make the next technical decision easier to defend.

A group of people sitting around a table with notebooks during a planning discussion.

Partnership and Advisory Support

I also work as a senior technical partner for founders, agencies, and product teams who need experienced judgement without turning every decision into a large delivery engagement.

This is useful when you need someone to pressuretest architecture, derisk a proposal, support a pitch, review a delivery plan, or stay close enough to help the technical direction hold together. If that becomes an ongoing leadership gap, fractional technical leadership is the stronger named service.

Related Project Work

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

    A Reimagining of This Classic Word Association Web Game

    Linkudo was built as a live Next.js product, with game behaviour, interaction design, deployment, and release paths designed together from the first version.

    View project
  2. Screenshot of the Nando’s website; part of John Kavanagh's development portfolio.

    A Complete Migration and Replatform for Nando’s

    On Nando’s, the migration connected Next.js, Vercel, structured data, restaurantpage SEO, and measurable search uplift in one release path.

    View project
  3. Screenshot of the Virgin Atlantic & Holidays website; part of John Kavanagh's development portfolio.

    A New Headless Platform for Virgin Atlantic & Holidays

    At Virgin Atlantic, the replatform improved a hightraffic travel estate while keeping release quality and frontend consistency visible.

    View project