Custom application development

Custom web and mobile apps that move real business numbers

I build apps that open a new revenue line, cut hours of manual work, or make your product easier to buy and use, and I help you decide what's worth building first. 10+ years at Amazon, Ticketmaster and beyond. Fixed cost, no agency overhead.

AWS Certified Developer · Ex-Amazon · Ex-Ticketmaster · React · React Native · Node.js · TypeScript · AWS

What I build

From idea to software that ships and scales

A product customers pay for

Web apps and SaaS platforms that turn an idea into revenue, from a first MVP that proves people will pay, to a full product built to grow with you.

Reach customers on their phones

Mobile apps for iOS and Android that put your product in your customers’ hands. Real apps shipped for Reach plc and ChargedUp.

Automations that save hours

Cut the manual, repetitive work that eats your team’s week with internal tools and integrations that lower cost and free people up for the work that grows the business.

AI where it genuinely helps

When it earns its place, I add AI that moves a number: smarter search, summarisation, automation. I built an official AWS solution shown at IBC 2024, and I’ll tell you honestly when AI isn’t the answer.

Why work this way

Senior capability. No hiring overhead.

Hiring a senior developer full-time

  • £80,000–£120,000 salary + benefits
  • 3–6 month hiring process
  • Equity expectations
  • Long-term commitment before you know if it works

Working with James on a project

  • Fixed cost, agreed upfront, no surprises
  • Start in days, not months
  • Enterprise-grade engineering without the overhead
  • Done when it's done, or continue if you want
Selected work

Recent applications

Tech stack

Modern, proven, production-tested

ReactReact NativeTypeScriptNext.jsNode.jsPythonAWS LambdaDynamoDBBedrockAmplifyCDKSAMTerraform
Pricing

Transparent pricing. Fixed cost. No surprises.

Most projects fall between £15,000 and £80,000 depending on scope and complexity. I always provide a detailed fixed-cost quote before any work begins. No vague estimates, no scope creep.

FAQ

Common questions

How do you charge, day rate or fixed price?
Fixed price per project, agreed upfront. You know the full cost before we start.
How long does a typical project take?
Depends on scope. A focused MVP can be 4–8 weeks. A full-featured application might be 3–6 months. I'll give you a realistic timeline in the quote.
Can you work with our existing team?
Yes. I'm comfortable working alongside in-house developers, designers, and product managers.
Will you maintain the application after launch?
Yes. Ongoing support, feature development, and technical leadership are available after launch via retainer or project-by-project.
What if we need ongoing technical leadership beyond the build?
I also offer fractional CTO and technical advisory services. Many clients move from a project into an ongoing advisory relationship.
Where are you based?
West Molesey, Surrey, so I can meet in person across Surrey and London. I also work with clients anywhere in the world, with a solid remote setup using shared progress boards and Slack.
Get in touch

Tell me what you're building.

Free 30-minute technical consultation. I'll tell you whether it's feasible, how I'd approach it, and what it would cost. No obligation.

I'll reply with honest thoughts on feasibility, approach and cost.