Mountain Warehouse has replaced its long‑standing ecommerce platform as part of a wider effort to support international growth and reduce the operational strain of legacy technology.
The global outdoor clothing and equipment retailer has launched a new composable ecommerce setup, powered by BigCommerce, retiring a custom‑built system that had been in place for more than a decade. The move is intended to give the business greater flexibility as it scales across multiple markets and channels.
Founded in 1997, Mountain Warehouse operates more than 400 stores worldwide and serves over five million customers across the UK, US, Canada, Europe, Australia and New Zealand. The retailer designs and manufactures the majority of its range in‑house, positioning itself as an affordable outdoor brand for families.
The company has grown since 2018, after receiving investment from European private equity firm Inflexion to turn it from a primarily store-based retailer into a true omnichannel business. During the period before Inflexion’s exit in 2025, Mountain Warehouse’s revenues doubled to close to £500 million, with over 100 new stores opened, 1,000 jobs created, and significant expansion in countries including Canada, New Zealand and Australia.
Unlocking the next phase of growth
Investment in ecommerce has been a significant part of the company’s transformation. Over time, Mountain Warehouse’s legacy ecommerce platform had become increasingly difficult to maintain, requiring significant engineering resource to support core infrastructure rather than customer‑facing innovation. Constraints around speed to market, security and experimentation also limited the business’s ability to respond quickly to changing customer expectations.
“Moving away from our legacy platform was critical to unlocking the next phase of Mountain Warehouse’s growth,” said Simon Neale, chief technology officer at Mountain Warehouse. “With BigCommerce, we now have the flexibility to innovate faster, integrate best‑of‑breed technologies and focus our engineering efforts on delivering better customer experiences rather than maintaining core infrastructure.”
Composable architecture
The new ecommerce environment uses a headless, composable architecture designed to support Mountain Warehouse’s complex global operations. According to the retailer, the platform enables faster deployment of new features, improved reliability and security, and easier integration of third‑party and in‑house systems.
The implementation supports a range of operational requirements, including multi‑location inventory, click‑and‑collect services, split shipments, bundled products and multiple payment methods. These capabilities are intended to help the retailer manage scale more efficiently while maintaining consistency across markets.
With the new platform in place, Mountain Warehouse says it is now better positioned to test and roll out new functionality as demand grows, while allowing internal teams to focus on differentiated features rather than core commerce maintenance.
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