I'm an independent software engineer and technical lead based in Brighton. I build and improve React, Next.js and TypeScript applications for businesses across the UK, from hands‑on development to complex digital transformations.
I am an enthusiastic senior software engineer and technical leader with 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.
I also founded Kavanagh Digital, where I lead independent programme assurance, recovery, and web‑platform due diligence.
My portfolio is diverse; I work with global clients, solving real-world problems, including:
Long‑term technical direction and hands‑on development for IMG Licensing's digital platform, spanning its original rebuild, ongoing evolution, major redesign, and migrations to Next.js, Sanity, and Vercel.
Lead UI development across several HSBC digital transformation projects, spanning commercial banking, React platform development, legacy integration, and complex global banking workflows.
Lead front‑end developer within Selfridges' e‑commerce Customer Experience team, delivering new features, considerable refactoring, and platform performance improvements.
Build a new Next.js website, application, headless front end, or product platform with routing, content operations, accessibility, performance, and release behaviour designed before delivery habits harden.
Principal‑level support inside active delivery when architecture, standards, mentoring, documentation, ownership transfer, and implementation decisions need strengthening whilst the team keeps shipping.
Define Next.js platform boundaries when domains, routes, tenants, brands, content ownership, data ownership, deployment models, or team responsibilities are making change unsafe.
Headless architecture advice before CMS, content model, preview, revalidation, metadata, schema, media, localisation, and editorial ownership decisions become expensive to reverse.
Senior platform assessment and technical direction for React and Next.js estates where routing, CMS, deployment, SEO, ownership, and delivery risk have become one problem.
Route‑level performance work for modern front ends where field data, Core Web Vitals, scripts, fonts, images, data loading, or templates are weakening important user journeys.
Stale closures in React explained through renders, handlers, effects, timers, refs, dependency arrays, why callbacks read old state, and how to fix them.
Debugging hydration mismatches in React and Next.js, including common causes, repeatable fixes, and how to stop server and client renders drifting apart.
AI search readiness starts with crawlable pages, rendered HTML, semantic structure, content quality, and safe action boundaries, not protocol‑first thinking.
Measure GEO with honest evidence from Search Console, analytics, query sets, AI‑assisted journeys, attribution patterns, and outcomes instead of fake scores.
Reduce headless CMS image bandwidth and quota risk with a storage mirror: sync changed assets, reuse originals, and keep Next.js image delivery off your CMS.
Lessons from running Next.js Pages Router at scale in 2026, including governance, performance discipline, and why older patterns sometimes still make sense.
How to de‑risk a CMS migration before the real move starts, by testing workflows, content assumptions, integrations, ownership, and technical contracts early.
A practical framework for choosing rewrite, refactor, or strangler paths, based on risk, delivery pressure, change cost, and organisational appetite.
Retention theatre explained through surveys, recognition schemes, pay, autonomy, trust, workload, management quality, and why strong engineers still leave.
Why transformation programmes fail after the slide deck, covering ownership, governance, operating‑model change, vendor fragmentation, and delivery reality.
Structure technical AEO content for direct answers without FAQ spam, using extractable passages, visible text, schema discipline, and topic depth.
Build an LRU cache in TypeScript with a hash map and doubly linked list, then compare it with a simpler JavaScript Map implementation and O(1) operations.
