Management Team

David Rosenthal Efftel UK

David Rosenthal, Managing Director

Managing Director David Rosenthal has direct responsibility for Efftel’s audit & analysis team. He has over 25 years experience in the telecommunications industry, both as a manager in international companies and as a consultant. He was previously a Product Manager at Alcatel HQ in Paris. In this role he managed a wide variety of projects relating to the operation and marketing of Alcatel’s worldwide data network. Before that he fulfilled various marketing roles at British Telecom.

David gained a degree in Management Sciences at Manchester University (UMIST) in the UK, and is a Member of the Communications Management Association (CMA).

Bob Kouba - Efftel UK

Robert Kouba, Chief Technology Officer

Bob heads up the development and maintenance of the specialist software used for all Efftel’s audit and management services. He is also responsible for developing the interfaces into telecoms suppliers’ global billing systems. Bob brings into the company a wealth of specialist software development experience gained from his time in BT, British Gas Research and Mitel Telecom. Past projects include the creation and development of network planning and design software and billing platforms for most of the UK telecom carriers, including Vodafone, Orange, BT Global Networks and Thus.

Bob is a graduate Chartered Engineer and a member of the Institute of Engineering and Technology.

Richard Thayer - Efftel UK

Richard Thayer, Partner Manager

Richard brings in-depth experience and knowledge of the business services sector, delivering many collaborative relationships through the alliance lifecycle. Having worked on many high profile collaborations with Corporate and SME clients, is able to overcome complex business process, organisational and people challenges with strong cross-functional practice experience within global organisations. Previously, he worked for Siemens in Business Services and Partner Management positions to deliver end to end technology solutions. Tenacious and committed to "win-win", long-term relationships continuously striving for performance improvement to ensure value add delivery.

Richard is also Founder and Chairman of the M3 Job Club, a registered charity (1156499) run on a voluntary basis to support people out of work. We take a business-led, coaching style approach to support members by offering a 16-week free programme, providing the tools and techniques to help them retake control of their situation to ultimately secure new employment of their choice. For more details please visit the M3 Job Club website: