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Our office in Zurich, Switzerland

Tessinerplatz 7
8002 Zürich
Bringing 25 years of international experience

DOOR3 opened an office in Zurich, Switzerland in mid-2022 to move closer to its customers in Europe. Headed by Principal Consultant Stefan Berreth, we bring our competence of de-risking complex software projects to those customers in the region, who value personal connection with people of their own culture and language. Stefan brings 25 years of international experience in the software industry, ranging from IT operations and security consulting to software development and interaction design. He has overseen software pre-sales and practice management, while working in technical account- and customer success management with U.S. companies operating globally and in European, Middle Eastern, and Asian markets. He worked in the U.S., France, The Netherlands, Germany and Switzerland and as a Swiss national speaks German, English, Dutch and French.

  • Stefan Berreth
    Stefan Berreth

    Principal Consultant

    As a Principal Consultant based in Zurich, Switzerland, Stefan is responsible for managing accounts in both North America and Europe. He brings 25 years of international experience in the software industry, ranging from security consulting to software development to interaction design. Stefan has overseen software pre-sales and practice management, while working in technical account and customer success management with U.S. companies operating globally and in European, Middle Eastern, and Asian markets.

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