Kostja Siefen - Email & Phone Number

Head of Global Technical Account Management at Gurobi Optimization

Kostja Siefen is based out of Frankfurt, Hesse, Germany and works at Gurobi Optimization as Head of Global Technical Account Management.

Kostja Siefen's Contact Information

Kostja Siefen's Work email

s*****@gurob***.com

Valid

Latest update

September 19, 2025

Location

Frankfurt, Hesse, Germany

Kostja's current employer

Gurobi Optimization

Description

Gurobi builds and supports the leading math programming solvers available for all major problem types. It's all we do.

Website

gurobi.com

HQ Location

Beaverton, OR, United States

Number of employees

51-200

Industry

Software Development

Latest update

April 30, 2024

Read about Gurobi Optimization

Frequent questions about Kostja Siefen

What company is Kostja Siefen working for?

Kostja Siefen works for Gurobi Optimization.

What is Kostja Siefen's function at Gurobi Optimization?

Kostja Siefen is Head of Global Technical Account Management at Gurobi Optimization.

Where is Kostja Siefen based?

Kostja Siefen is based out of Frankfurt, Hesse, Germany.

What is Kostja Siefen's work email address?

Kostja Siefen's professional email address is s*****@gurob***.com

Who are Kostja Siefen's co-workers?

Kostja Siefen's colleagues are Duke Perrucci, Robert Bixby, Ed Rothberg, Zonghao Gu, Tobias Achterberg, Michel Jaczynski, Stacey Queen, Juan-Carlos Mani, Akhilesh Jaiswal, Tracy Pesanelli, Michael Harkness, Greg Glockner, Keith Hogan, Nathan Hartley, Ronald Shung, Nick Roman, Manuel Rassi, Matt Izatt, Frank Häger, Isela Warner, Mian Qin, Silvana Quintero, Milos Pavlovic, Adam Dix, Peter Matthesius, Frédéric Baumann, Lindsay Montanari, Iain Jardin, Sascha Haake, Paul Charchaflian, Marty Cavanaugh, Christopher Smith, Rene Filardo, Adam Horowitz, Tonya Peek.

Kostja's co-workers

Duke Perrucci

Chief Executive Officer

Robert Bixby

President and CEO

Ed Rothberg

Chief Scientist and Chairman of the Board

Zonghao Gu

Chief Technical Officer and Co-founder

Tobias Achterberg

Vice President of Research and Development

Michel Jaczynski

Senior Director of Cloud and Platform R&D

Stacey Queen

Vice President Finance

Juan-Carlos Mani

Senior Vice President Of Global Sales

Akhilesh Jaiswal

Vice President of Technology and Operations

Tracy Pesanelli

Vice President - Senior Sales Advisor Americas

Michael Harkness

Global Executive Vice President of People

Greg Glockner

Vice President and Technical Fellow

Keith Hogan

Director of Finance, Corporate Controller

Nathan Hartley

Director Of Information Technology

Ronald Shung

Director of Product Marketing

Nick Roman

Director of Creative Services

Manuel Rassi

Telecom Account Director (Americas)

Sr. Global Marketing Director

Mian Qin

Account Director, Northeast US

Silvana Quintero

Global Alliances & Partners Marketing Director

Milos Pavlovic

Director Of Business Development

Adam Dix

Director, Banking and Financial Services

Peter Matthesius

Sales Director

Frédéric Baumann

Director of Business Development | Western Europe, Middle East, Africa

Lindsay Montanari

Academic Program Director

Iain Jardin

Senior Account Director, Oceania

Sascha Haake

Director Sales EMEAI

Paul Charchaflian

Head of Global Alliances & Partnerships

Marty Cavanaugh

Strategic Account Director

Christopher Smith

Account Director - Nordics & India

Rene Filardo

Global Director Talent Acquisition-I'm HIRING

Adam Horowitz

Marketing Operations Director

Tonya Peek

Director of People and Organizational Development

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