NatWest Markets: React Trading Platform Case Study

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Challenges & Solutions

Integrating With Upstream and Downstream Banking Systems

A market platform does not stand alone. It has to pull live pricing, account data from upstream systems, push orders, updates to downstream settlement and reporting systems. At NatWest’s scale, any mismatch between the web and mobile clients and those connected systems risks broken trades or stale data.

Solution: Our team of React developers developed the web and mobile applications in parallel, so both stayed aligned with the same upstream and downstream integrations. Building them together enforced consistent data contracts and behavior across clients, so users on either platform see the same real-time state and benefit from the same connected systems.

Rolling the Mobile Version Out to Internal and External Users

The platform had to reach two very different audiences, internal bank staff and external clients, on mobile, without diverging from the established web experience or fragmenting functionality between the two.

Solution: We kept mobile and web development synchronized so features shipped in step and behaved consistently across both. That alignment smoothed the mobile rollout and let internal and external users move between web and mobile without relearning a different interface.

Migrating the Data Grid From D3 to ag-Grid

The platform’s data-heavy trading and market views were originally built on D3, which became harder to maintain and extend as grid requirements grew. Moving to ag-Grid promised better performance and richer features, but a hard cutover risked breaking the views traders depend on.

Solution: Our team handled the transition to ag-Grid and added an auto-update mechanism so new grid features could be integrated cleanly and the platform stayed current without disruptive manual upgrades. Traders gained a faster, more capable data grid while the migration stayed low-risk.

Driving User Adoption Across a Large User Base

A capable trading platform only delivers value when people use its features. With internal and external users of varying technical comfort, low adoption or underused tools would undercut the investment.

Solution: We supported structured user-training programs, ongoing support, and resources to lift adoption and help users get the most from the platform. Pairing enablement with the product work helped users move on to the new tools and use the advanced trading features as intended.