Horton International
With a wealth of experience in executive search our Leadership team provide the expertise, cooperation and quality to ensure the best outcomes for our clients, candidates and partners.


The Board of Directors

Andreas Wartenberg

Tel. +49 (0)69 95092-0

Andreas Wartenberg is a Managing Director of Hager Unternehmensberatung/Horton International and has been an executive search consultant for nearly 25 years, filling management positions in the technology sector and other industries. He set up and led national and international teams before joining Hager Unternehmensberatung/Horton International as a Managing Director in 2008.  He is a leading topic expert in the DACH region in regards to all aspects of technology management and digitalization within all type of corporations.

Joshua Hollander

Regional Director
Tel. +1 860 521 0101
United States

Through the analysis and optimization of business models, Josh builds teams of top, high-achieving talent and enables them to achieve success with the right technology, training and ongoing leadership. His experience demonstrates his skills in developing customized business models and implementing creative solutions that drive top-line growth, increase profitability, and improve the client experience. Josh partners with senior executives and has an ability to sell the story to internal and external stakeholders. 

Gary Woollacott

Regional Director
Tel. +66 2 636 2323

Gary is Managing Partner of Horton International in Thailand and Vietnam, based in Bangkok, and has been active in executive search since 1995. His search experience has encompassed numerous senior-level assignments across the broad spectrum of functional disciplines in most sectors, although he initially started in Banking and Financial Services. Before joining the executive search industry, he worked in corporate finance in London and Sydney. 

Olli Oittinen

Regional Director
Tel. +358 40 500 2333

Olli has 20 years of experience in international telecommunications. Almost 17 of these years were with Nokia and Nokia Siemens Networks. During this period Olli played a key role in the growth of Nokia during the early years of cellular. Through a series of senior positions Olli helped Nokia expand around the world and win supply contracts with a large number of leading carriers. 

Maneesh Ajmani

Regional Director
Tel. +973 17002566

Maneesh has over 25 years experience working across North America, Europe, Middle East and Asia. He has worked with companies in a variety of industry sectors and has spent the past over 15 years in the Middle East helping regional companies enhance shareholder value. 
Maneesh’s regional clients include large private conglomerates, public listed companies as well as multi-billion dollar multinationals with a presence in the Middle East. Clients value his ability to think like a business owner and his strong network within the regional markets.