Case Study

Major European Bank

By TrueNode
25 September 2020, 10:59

  • 2.5MCustomers In Europe

  • +300.000Users At Deployment

  • +8%Customer Satisfaction

The story

We joined a large tribe of teams working on the digital transformation and introduction of microservice architecture, taking ownership of several aspects of the mobile app, most notably debit and credit card management. We built a number of services, all with their own databases used for storing internal logic and none of the actual user data to ensure customer privacy.

The solution we built was implemented directly into the mobile app and deployed to well over 300,000 users, introducing greater geocontrol, 3D Secure support, and allowing users to temporarily lock/unlock their card. They could now also set ATM and POS limits, reorder expired or lost cards and view PIN. Our engineers continue to build the microservice architecture retaining the legacy platform but are progressively minimizing it as we are building a modern architecture around it.

Advanced mobile banking for +300.000 users

While facilitating our client through digital transformation, we took ownership of several aspects of the mobile app development (including debit and credit card management) to help replace an outdated e-banking solution.

Leadership position secured through digital transformation

We augmented a team to support this traditional bank through digital transformation of their core product, by introducing microservice architecture to modernize legacy tech, and revamping their mobile banking portfolio.

Regulatory compliance ensured through NextGenPSD2

Our team helped implement the PSD2 standard. By opening up interfaces, this enabled a unified and open approach to connect third-party providers (e.g. Google) and allows them to manage aggregation and payment initiation.


We partnered with a leading European bank to help them with the digital transformation of their core product, revamp their mobile banking portfolio, and improve customer experience. As of 2019, the bank continues to grow its revenue that far exceeds 1b€.