Retarus’ Management

Retarus was founded in Munich in 1992. Today Retarus is represented around the globe by 20 subsidiaries. The company is led by experts who have one thing in common: whatever they do is done with passion and commitment, keeping an eye on both the bigger picture and the finer details.

Retarus North America

Stefan Rath is the President of retarus Inc. After earning a law degree at the University of Passau in Germany and a Master’s Degree in International Business at Boston University, Stefan worked for an international law firm and investment banks in Italy and Switzerland.

Stefan Rath

President & CEO
retarus Inc.

Johannes Hecker

Treasurer, Secretary

Tim Valentine serves as retarus Inc.’s EVP Global Accounts. Tim is a seasoned leader who brings over 10 years of management experience to Retarus. Before moving to Retarus in 2011, Tim worked as the Regional Vice President for Xpedite Systems in New York City, a division of PGi, where he ran the Eastern and Southern regions of North America. Prior to joining Xpedite, Tim worked for two-market leading telecommunications companies; his most recent experience at MCI, where Tim was responsible for direct sales in Philadelphia for Enterprise Accounts.

Tim Valentine

EVP Global Accounts
retarus Inc.

Martin Hager

Director of the board

Dan Warren is the EVP Sales North America of retarus Inc. Dan holds an MBA in Finance from Suffolk University and a BS in Management with a minor in Accounting. He has over 15 years experience in the telecommunications industry. He has held executive management positions for Network Plus and Broadview Networks. He is also the former CEO of a telecom agency business. Most recently, he held the position of Partner Area Director for XO Communications in which he was responsible for $200 million in annual partner revenue and for 50% of XO’s national channel partners. Dan sits on carrier advisory councils for several national distributor master agencies.

Dan Warren

EVP Sales North America
retarus Inc.

Retarus Group

Martin Hager is the CEO, founder and managing director of Retarus. Prior to the creation of Retarus in 1992, Martin Hager studied Computer Science and Economics at the Technical University of Munich and the University of Hagen, Germany. He has worked with several global companies in various positions including sales, product management, development, support, and consulting, all of which gave him the vision and drive to turn retarus into a global leader in messaging services. Martin currently serves as the Chairman of the board for retarus Inc.

Martin Hager

CEO Retarus Group

Johannes Hecker joined Retarus in 1993 and has since held positions in Sales, Financial Controlling, as Assistant to the CEO and as CFO. As COO he heads the Group’s Global Sales and Marketing organization in eleven countries, and is also responsible for Strategic and Commercial Business Development. He spent several years in the US studying at the University of Virginia and holds a degree in Business Administration from Munich University of Applied Sciences. Prior to Retarus, Johannes worked in Controlling, Business Development and Contract Management at Betaresearch, a Kirch Group company.

Johannes Hecker

COO Retarus Group

Sascha Wellershoff joined Retarus in 2014. He is the CFO and heads Retarus Group’s Finance, Controlling, Procurement and Legal departments, and reports to the COO. Following key management positions at Mannheimer AG Holding and the Allianz Group, he was responsible for the financial performance of Telefónica Germany’s B2B business. Sascha holds a German MBA and a Master of Arts and is a Certified Financial Analyst, a Certified Valuation Analyst, and member of various professional associations.

Sascha Wellershoff

CFO Retarus Group

Jürgen Peschel joined Retarus in 2015. He is the CTO and heads Retarus Group’s Pre-Sales, Delivery and IT Operations departments. He is responsible for the groups’ technical functionality and Retarus’ data centers worldwide, reporting to the CEO. Following management positions at T-Systems and Deutsche Telekom, he held different global leadership positions in IT and Network at Vodafone Group, where he lead the implementation of the group’s global strategic network. Jürgen holds degrees in Informatics and Business Administration from universities in Germany and Canada.

Jürgen Peschel

CTO Retarus Group

Bianca Bacher joined Retarus in 2005. She is the HR Director and reports directly to the CEO. Bianca has constantly been engaged in expanding the HR department to enable the group’s international growth. Bianca studied Business Administration in Munich and Beijing. Prior to joining Retarus, Bianca was part of BMW’s Recruitment Marketing team and Infineon Technologies’ Personnel Development department.

Bianca Bacher

Director HR Retarus Group

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