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Scale your e-commerce business without platform constraints.

Remove barriers. Reduce risk. Scale with confidence.

Most retailers don’t need a new platform; they need a better architecture. We help you break free from the limitations of your e-commerce platform to improve reliability, performance, and flexibility as your business grows.

Feeling restricted by your e-commerce set-up?

Most e-commerce platforms are great at getting you live quickly. But as your business grows, the same setup that helped you launch can start to limit what’s possible, slowing teams down and ultimately restricting your growth potential.

So, how do you know if you need to take action?

  • Storefront changes feel slow, restricted, or overly template-led

  • Plugins and workarounds are stacking up

  • Performance becomes harder to predict during peak demand

  • Integrations feel brittle or difficult to change without risking downtime or breaks

  • Order fulfilment requires manual intervention or constant exceptions and you’re struggling to stay on top of it

  • You’re spending more time firefighting than focusing on strategic growth

Experienced and agile.
Trusted by some of the world’s biggest brands.​

Get more from your e-commerce platform, without replatforming.

As your business grows, the challenge isn’t choosing a new platform, it’s removing the constraints that slow you down, create fragility, and limit your ability to scale.

We work with retailers to separate the parts of their e-commerce setup that need flexibility and scale, so you can improve reliability, performance, and control without starting over.

This ensures:

  • Faster change and more control over experience

  • More reliable performance under peak demand

  • Reduced operational overhead and manual workarounds

  • Safer scaling across brands, channels, and partners

  • A future-ready foundation that evolves with the business

Introducing Avios Shop
Built in just 14 weeks

Avios Shop on a laptop
Avios Shop on a Macbook
Avios Shop on a computer screen

IAG Loyalty set out to build a new multi-brand e-commerce capability for the Avios ecosystem. Its existing platforms used BigCommerce for the front and back-end which, as it had scaled, was causing delays in real-time loyalty transactions and was struggling to handle traffic volume at peak times. The team faced limitations in terms of adding new product lines and controlling the customer experience and wanted to ensure that moving forward their e-commerce systems could scale and maintain performance.

Leighton partnered with IAG Loyalty to reimagine how its customers earn and spend Avios points online, creating a platform that could scale across brands, products, and regions.

Working collaboratively through event storming and domain-driven design (DDD), Leighton designed, built, and launched the new Avios Shop, which decoupled the front-end solution from the back-end (BigCommerce). The solution used new brand-agnostic middleware for seamless transfer of loyalty points and onboarding of new brands and integrated with a bespoke order management system (OMS) which utilised automation to streamline fulfilment.

The AWS-powered, event-driven commerce platform was delivered from proof of concept to live launch in just 14 weeks. The result was a reliable and secure ecommerce solution that could scale elastically with the customer and product demand. The customer can now be confident in the platform’s stability – especially as it expands – and has full control over the look, feel and overall customer experience.

Card that reads: 14 weeks from concept to launch. Delivered 7x faster than the internal 2-year estimate.
Card that reads: 100% serverless on AWS. Scalable, resilient and cost-efficient, using fully event-driven architecture.
Card that reads: 2m+ customers reached at launch. Marketed to 2m+ customers at launch, highlighting customer confidence in solution.
Card reads: 6 person engineering team. Delivered an enterprise scale platform through lean, agile collaboration.
Card reads: 3 integrated systems. Storefront, middleware and order management system built to work seamlessly together.
Card reads: 0 defects identified. Proven through 800+ automated and 30+ end-to-end tests, ensuring enterprise-grade reliability from day one.

We help retailers scale beyond platform constraints by adopting a tailored approach based on your goals

  • Scale without replatforming

    Evolve beyond the limits of your current setup while retaining what already works, without the cost and disruption of starting again.

  • Reliability and performance by design

    Reduce fragility and deliver consistent performance as traffic, orders, and complexity increase, including during peak demand.

  • Less manual effort, more momentum

    Replace workarounds and operational overhead with engineered solutions that reduce support burden and free teams up to focus on growth.

  • Built to adapt as the business evolves

    Launch new brands, expand into new channels, and integrate new partners without having to rebuild your entire stack every time priorities change.

  • Long-term control and flexibility

    Reduce dependency on pluginsand third parties, as well as overcoming platform limitation. Regain control over how your e-commerce business evolves.

Let's talk about what's possible

Whether you’re feeling the strain of platform limitations, planning for peak growth, or simply want a second opinion on your current architecture, we’re here to help.

Tell us a little about your setup and what’s on your mind. One of our solution architects will review your message and come back to you with practical, experience-led advice. No hard sell, just a constructive conversation.