What we do
Consulting
Senior technical advice on strategy, architecture and delivery, before you commit time and budget.
Learn more →Web Development
Fast, secure, maintainable code, engineered to scale with your business.
Learn more →App Development
iOS, Android and web apps built on the same scalable foundations as our sites.
Learn more →E-Commerce
Online shops that are quick, secure and simple to run, and built to convert.
Learn more →Technical SEO / AEO
Speed, structure and markup that help search engines and AI answer engines find, rank and cite you.
Learn more →Digital Marketing
We don't leave you alone after launch. We help you reach your audience and grow.
Learn more →Vibe-coded it? We’ll check it’s ready.
AI tools are great for getting started. We review what they’ve built and give you a clear, prioritised list of what to fix before real users arrive.
Security
Keys, auth and access rules.
Architecture
Will it scale as you grow?
Code quality
Code you can safely change.
Performance
Speed and hosting costs.
Data & privacy
Storage, backups, compliance.
Launch readiness
Testing, monitoring, deploys.
Technologies we work with
See our full stack →Next.js
React
Shopify
HubSpot
- Salesforce
- HighLevel
WordPress
TypeScript
Node.js
Stripe
Cloudflare
Vercel
Sanity
Contentful
Tailwind CSS
GraphQL
Expo
Laravel
- Klaviyo
Zapier
Google Analytics
Selected work
All case studies →
About KJA
Small on purpose. Senior by default.
KJA is a deliberately focused studio. Since 2014 we’ve worked with fashion houses, building societies, global brands and start-ups, and we’ve kept things simple: experienced people, doing the work themselves.
No account managers, no layers, no passing your project down the line. Just direct access to the people who plan it, build it and look after it.
Talk to the builders
The people on your call are the people writing your code. Nothing gets lost in translation, and you always know where your project stands.
Senior on every project
Every line is written by someone with years of production experience, not handed to a junior. Cleaner code, fewer surprises.
Partners, not vendors
We work alongside your team or your designers, and stay on long after launch to keep improving what we’ve built together.