About KJA
Small on purpose. Senior by default.
A focused web development and consulting studio, working directly with the businesses we build for since 2014.
Our story
Built on doing the work, not managing it.
KJA started in 2014 with a simple idea: clients get better results when they work directly with the people building their product. More than a decade on, that’s still how we operate.
We’ve shipped e-commerce for a London fashion house, data tools for Wales’ largest building society, campaign sites for a global payments brand, and apps for smart-home hardware, alongside dozens of start-ups and growing businesses in the UK and US.
We’ve chosen to stay focused rather than grow for the sake of it. It means fewer clients at a time, more attention for each, and no part of your project handed to someone you’ve never met.
The team
The people you’ll actually work with.
KJA is led by its two co-founders, who are hands-on in every project. For larger builds, we bring in a small, trusted network of highly experienced freelance developers we’ve worked with for years.
Kieran Allen
Technical Director & Co-founder
Architecture & technical strategyKieran has spent over 20 years solving technical problems for clients including General Motors, Visa, Colgate, Adobe, MRM McCann, Hyundai and Miniclip.
Known for bringing innovative ideas to the table, he helps clients drive their business forward with technology shaped around their needs, from platform architecture to the details of how it ships. KJA is one of six businesses he runs, so he brings a founder’s perspective to every project, not just an engineer’s.
ArchitectureFull-stackTechnical strategyConsulting
Connect on LinkedIn
Juliette Kammacher-Reich
Managing Director & Co-founder
Front-end lead developerJuliette combines development with strong organisational skills to bring clients’ ideas to life. With a keen eye for detail and a deep understanding of UX and the latest web trends, she delivers high-quality, pixel-perfect and responsive projects.
As Managing Director, she also leads project management, coordinates our network of specialist developers and keeps the business running smoothly.
Front-endUXResponsive buildsProject management
Connect on LinkedInWhat we believe
How we’re different.
Talk to the builders
The people on your call are the people writing your code. Nothing gets lost in translation.
Senior on every project
Every line is written by someone with years of production experience, not handed to a junior.
Partners, not vendors
We work alongside your team or your designers, and stay on long after launch.
Built for scale
Our work serves over 65 million people a month. We engineer every project to handle growth from day one.
Honest advice
If something isn’t worth building, or there’s a cheaper way, we’ll tell you. Even if it means less work for us.
In it for the long run
Many of our clients have been with us for years. We look after what we build, and keep improving it.
Who we work with
From global brands to first-time founders.
Fashion & retail
Online shops that are as considered as the products they sell.
Financial services
Calculators, data tools and secure platforms people can trust.
Brands & agencies
Campaign sites and microsites built to a supplied creative.
Start-ups & scale-ups
MVPs, apps and platforms that grow with the business.
Ways to work with us
Pick the model that fits.
Projects
A defined scope, timeline and budget, from first plan to launch.
Best for: new sites, apps and shopsRetainers
A monthly allocation of senior time for improvements, support and growth.
Best for: live products that keep evolvingConsulting
Focused, expert input on strategy, architecture or an existing build.
Best for: second opinions and big decisionsHow we work
01
Discover
We learn your goals, audience and constraints.
02
Plan
Architecture and roadmap, agreed early and shared often.
03
Build
Clean, tested code, deployed with care.
04
Grow
Measure, market and improve after launch.