Case study · Legacy Modernization
A German automotive enterprise
An aging frontend stack made every release risky and slow. We modernized it module by module — while the business kept running.
The mess we walked into
A fleet-services platform used daily across the organization was stuck on an aging frontend stack. Releases were risky and slow, the UI looked a decade old, and every change carried the fear of breaking something in production. A big-bang rewrite was off the table — the business could not stop.
What we did
- Modernized the frontend module by module, with old and new code running side by side
- Introduced a modern Angular architecture with clear module boundaries
- Built automated testing from scratch — regressions get caught before release, not after
- Rolled out incrementally with zero downtime; users saw improvements, never migrations
Before / after
Release cycle weeks days
Regression bugs recurring in production caught by automated tests
Frontend architecture entangled legacy stack modular, modern Angular
Engagement one-off fix attempts multi-year ongoing partnership
← All case studies"They modernized the platform while it kept running. Our users never noticed a migration — only that things kept getting better."
Product Lead, automotive enterprise, Germany
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