Financial & Insurance

In-house core banking migration for regional FSI

Our Client's Backstory

Our client is a technology provider within a major financial group based in Austria, supporting banking, insurance, and financing operations across Central Europe. They manage the software systems and infrastructure of the entire group. While most systems were already handled internally, their core digital banking applications were still owned and maintained by an external vendor, and bringing them in-house was the logical next step.

The Challenges

The client's core digital banking and field service applications were developed and hosted externally, leaving them dependent on a third party for software that their customers and field staff used daily.

Recurring costs with limited return: Paying an external provider to develop and maintain software meant costs scaled with every new need, without the long-term value that comes from owning it internally.
Slow response times for changes: Every change had to go through the vendor first, meaning even minor deployments took up to seven days.
Reduced visibility into security and data handling: With systems managed externally, the client had limited oversight of how security and data were actually handled.
No flexibility to evolve the product independently: The client couldn't build new capabilities or integrate new tools without routing every decision through the vendor.

Klika Solution

We reviewed the existing vendor implementation to map out its architecture, dependencies, and integration points, then built a migration plan to move everything to the client's own infrastructure and tooling.

Full application migration: We migrated 32 backend services, 1 middleware layer, and 15 microfrontends into the client's own environment, with no interruptions for end users.
Third-party services integration: We rebuilt the messaging and notification infrastructure using Active MQ for internal messaging and Firebase for push notifications, replacing vendor-owned components with solutions the client now fully owns.
CI/CD and infrastructure setup: We set up deployment pipelines and infrastructure on OpenShift, giving the client full control over how and when they release changes. A centrally configured API Gateway handles all service traffic from a single point.
Security improvements: We introduced automated security scanning using Sonatype IQ and SonarQube across frontend and backend services, identifying and resolving 99% of previously undetected vulnerabilities.

The Results

We delivered the migration without any disruption to end users, giving the client full ownership of their core banking software for the first time.

Full autonomy over growth and scaling: The client can now build new capabilities, integrate new tools, and scale their systems at their own pace.
Long-term stability and strategic control: With core banking applications fully in-house, the client removed a critical external dependency and now controls the direction, costs, and future development of their own systems.
Faster time to delivery: What previously took up to seven days now goes live within hours, letting the client respond and ship changes on their own.
Security ownership and visibility: The client now manages security internally, with full visibility into risks and the ability to detect and resolve issues directly.