How 4Soft Builds Engineering Software for Volkswagen with Vaadin

4Soft GmbH, a Munich-based software consultancy, shares how they use Vaadin and Java to build internal engineering tools for a large Volkswagen project. Initially skeptical about Vaadin's longevity, lead architect Rainer Ganß found it practical for Java-focused teams building server-driven internal UIs, support interfaces, and integration tools — particularly where tight Spring ecosystem integration matters. The team avoids recommending Vaadin universally; Angular remains their choice for the main engineering UI with complex client-side requirements. They are currently upgrading to Spring Boot 4 and Vaadin 25, and exploring AI-assisted development workflows.