Stefan Berreth - Email & Phone Number

Principal Consultant at Door3

Stefan Berreth is based out of Kilchberg, Zurich, Switzerland and works at Door3 as Principal Consultant.

Stefan Berreth's Contact Information

Stefan Berreth's Work email

s*****@door***.com

Valid

Latest update

October 29, 2025

Location

Kilchberg, Zurich, Switzerland

Stefan's current employer

Door3

Description

DOOR3 is an independent technology consultancy and software development firm headquartered in New York City. Independence is the Difference.

Website

door3.com

HQ Location

New York, NY, United States

Number of employees

51-200

Industry

Software Development

Latest update

April 30, 2024

Read about Door3

Frequent questions about Stefan Berreth

What company is Stefan Berreth working for?

Stefan Berreth works for Door3.

What is Stefan Berreth's function at Door3?

Stefan Berreth is Principal Consultant at Door3.

Where is Stefan Berreth based?

Stefan Berreth is based out of Kilchberg, Zurich, Switzerland.

What is Stefan Berreth's work email address?

Stefan Berreth's professional email address is s*****@door***.com

Who are Stefan Berreth's co-workers?

Stefan Berreth's colleagues are Jonathan Blessing, Alex Asianov, James Raddock, Jennifer Tenuto, Bart Michalak, Laena Ilk, Liz Flyntz, Michael Montecuollo, Tom McClean, Yisrael Frenkel, Tanya Babiy, Robert Miller, Sergey Matyash, Yaroslav Siachyn, Nicholas Turturro, Hailey Grossel, Valentina Kerzhentseva, Abdulmajeed AlTayar, Anthony Madrid, Iryna Tymoshenko, Dmitriy Onypko, Nicole Fasig, Amy Lo, Ryan Kingman, Anton Trokhymenko, Mike Pittman, Robert Kelly, Andrew Glancy, Bailey Costello, Iaroslav Proskurnia, Oleksii Maihurov, Vadym Karpenko, Pedro Dalmau, Muhannad Alduraywish, Olga Khabulya.

Stefan's co-workers

Jonathan Blessing

Chief Executive Officer

Director, Finance and Operations

Bart Michalak

Practice Lead - Business Analysis

Laena Ilk

Director of Solution Architecture

Liz Flyntz

Director of User Experience and Design

Michael Montecuollo

Director of Principal Consulting

Tom McClean

Director of UX & Design

Yisrael Frenkel

General Manager, Atlanta Office and Head of Southern Region

Tanya Babiy

Director of Global People Strategy, Head of Kyiv Operations

Robert Miller

Associate Director of Engineering

Sergey Matyash

QA Practice Lead

Yaroslav Siachyn

Senior Project Manager

Nicholas Turturro

Marketing and Content Creator

Hailey Grossel

Operations Manager & US Recruiter

Valentina Kerzhentseva

Senior Project Manager

Abdulmajeed AlTayar

Principal Consultant

Anthony Madrid

Sales Development Representative

Freelance Content Strategist

Amy Lo

Business Analysis & Digital Strategy

Ryan Kingman

Sales Development Representative

Anton Trokhymenko

Sr. Software engineer

Mike Pittman

Product Management Consultant (Sr. Business Analyst)

Robert Kelly

Sales Development Manager

Andrew Glancy

Solutions Architect

Bailey Costello

User Experience Designer

Iaroslav Proskurnia

Senior QA Engineer

Oleksii Maihurov

Sr. Full-Stack Developer

Vadym Karpenko

Sr. Full Stack Developer

Pedro Dalmau

Chief Operating Officer

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