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Software Development Company

Cleo AG

Zurich software developer building long-lived enterprise systems for public bodies and large companies

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About Cleo AG

CLEO AG is an IT company in Zurich that builds and extends large software systems. It concentrates on applications that stay in service for many years inside bigger platform landscapes.

What CLEO AG offers

  • Backend development — building and extending complex backend systems, mostly with Java.
  • Architecture work — design within existing application landscapes.
  • Integration — connecting systems in mixed technical environments.
  • Modernisation — stabilising and carefully renewing older solutions.
  • Project support — testing concepts and extra staff for software projects.

Who it works with

Typical clients are public institutions and large Swiss companies where software sits at the centre of daily operations. The firm prefers long-term work to short, isolated tasks.

Key facts

  • Based in: Zurich, Switzerland
  • Technologies: Java, JavaScript, node.js
  • Site language: German

Profile written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

As of 2026-10-05. Organic ranks only; sponsored placements are never ranks.

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