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.


The 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 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 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 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 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 Result

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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
Security ownership and visibility

The client now manages security internally, with full visibility into risks and the ability to detect and resolve issues directly.

Premium UX Template for Framer

The Result

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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
Security ownership and visibility

The client now manages security internally, with full visibility into risks and the ability to detect and resolve issues directly.

Premium UX Template for Framer

The Result

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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
Security ownership and visibility

The client now manages security internally, with full visibility into risks and the ability to detect and resolve issues directly.

Premium UX Template for Framer

The Result

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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
Security ownership and visibility

The client now manages security internally, with full visibility into risks and the ability to detect and resolve issues directly.

Premium UX Template for Framer

The Result

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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
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.

Premium UX Template for Framer
Security ownership and visibility

The client now manages security internally, with full visibility into risks and the ability to detect and resolve issues directly.

Premium UX Template for Framer


Technology Stack

Quarkus

WildFly

JSF

Angular

Liquibase

Firebase

ActiveMQ

MSSQL

OpenShift

Helm

3scale API Gateway

Sonatype IQ

SonarQube

Technology Stack

Quarkus

WildFly

JSF

Angular

Liquibase

Firebase

ActiveMQ

MSSQL

OpenShift

Helm

3scale API Gateway

Sonatype IQ

SonarQube

Technology Stack

Quarkus

WildFly

JSF

Angular

Liquibase

Firebase

ActiveMQ

MSSQL

OpenShift

Helm

3scale API Gateway

Sonatype IQ

SonarQube

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WTEC Coming Home: Migrating core banking systems in-house for a regional financial services leader.

Financial & Insurance

Coming Home: Migrating core banking systems in-house for a regional financial services leader

Klika migrated 32 services and 15 microfrontends in-house, cutting release cycles from days to hours and restoring full control of core banking.

Young woman smiling while holding credit card and phone

Financial & Insurance

Pioneer Mobile Banking for Emerging Markets

Klika was selected as the exclusive technical partner to design and engineer a full-stack mobile banking solution.

person using laptop

Financial & Insurance

High-Fidelity E2E Testing for Banking Systems

The team engineered a modular automation strategy and a data abstraction layer to overcome the inherent bottlenecks of core banking systems.

Techtonic Newsletter

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Certifications & Awards

27001

Stay in Touch

Follow us on social media to catch a glimpse of our KLIKA adventures.

© 2026 Klika LLC

Techtonic Newsletter

Subscribe to our newsletter to keep up with the latest news from the world of technology and AI.

Certifications & Awards

27001

Stay in Touch

Follow us on social media to catch a glimpse of our KLIKA adventures.

© 2026 Klika LLC

Techtonic Newsletter

Subscribe to our newsletter to keep up with the latest news from the world of technology and AI.

Certifications & Awards

27001

Stay in Touch

Follow us on social media to catch a glimpse of our KLIKA adventures.

© 2026 Klika LLC

Techtonic Newsletter

Subscribe to our newsletter to keep up with the latest news from the world of technology and AI.

Certifications & Awards

27001

Stay in Touch

Follow us on social media to catch a glimpse of our KLIKA adventures.

© 2026 Klika LLC