OFFICE MANAGER

Anita Roth has been working for and with Wolfgang Doell for over 20 years. After her apprenticeship as a state-certified foreign language correspondent and further training as a European secretary, she started at Heidrick & Struggles in May 2000 as an assistant in the Industry Practice. After three years in the executive search environment, she switched to industry and started as Office Manager in a research company of TU Darmstadt/Henkel KGaA. Only after one year, Wolfgang Doell brought her back to his team, which she has supported in various functions since then, including during her parental leave. As Office Manager she takes care of all administrative matters of the entire GAIN team today, is responsible for marketing and database maintenance and as a Project Assistant she supports the consultants in the handling of search mandates.

Principal

From Manager to Consultant

In addition to decades of experience in responsible positions in the automotive and general industries, Rainer Müller has also several years of experience in executive search. In this way, he advises our clients holistically and sustainably.

After studying process engineering in Hamburg (1992), his 20-year management career encompassed various sales functions in the manufacturing industry, starting with roles as Sales Engineer, Key Account Manager and Business Development Manager and including sales management functions with global (BTB) responsibility.

His career was interrupted from 2011 to 2015 as a HR consultant in the Executive Search of a renowned German HR consultancy and by the founding of his own company.

Rainer Müller joined GAIN Management Advisors GmbH as a Principal in March 2022. In addition to the regional focus in his home country of Northern Germany, he mainly advises industrial clients on strategic HR management and strategically relevant change processes. The resulting search mandates cover the different functional areas of a company and represent the entire value chain in the form of a holistic solution approach.

Partner

From engineer to experienced manager and personnel consultant

Christoph Fenske studied mechanical engineering at the Technical University of Hamburg and has over 25 years of experience in the defense and marine industry. His career steps ranged from project management to leadership roles at leading companies in propulsion technology.

In his last position as Head of the Marine & Industry Division at a well-known propulsion specialist, he was responsible for a division with over 200 employees at three locations. Christoph is distinguished by his competence in leading complex organizational units and implementing change processes. He played an important role in the introduction of a cultural change process in one of his previous companies and was instrumental in the development and implementation of a product lifecycle and contributed to the development of innovative products. 

Christoph's expertise spans a broad range of technical and market knowledge, maintaining a particular affinity for the marine and defense industries. 

In 2023 Christoph moved into executive search. Since April 2025, he has been a partner at GAIN Management Advisors, where he advises companies on filling leadership positions. His combination of technical expertise, leadership experience and strategic thinking makes him a competent advisor for companies in the maritime and industrial sectors. His in-depth understanding of the challenges in technology-driven industries enables him to develop customized solutions for staffing and development.

MANAGING PARTNER

FROM RESEARCH ASSOCIATE TO MANAGING PARTNER

Thorsten Bach advises board members, CEOs and senior managers in Executive Search, Potential Analysis and Career Advisory Services. Centrally from Rhine-Main area, he works for clients in the mechanical and plant engineering, the manufacturing industry, in the construction and real estate business as well as the financial sector. In doing so, he uses his decades of consulting experience, which he has gained at Heidrick & Struggles, Search Partners AG and von Rundstedt since the mid-1990s. In 2017 his career path led him to GAIN Management Advisors GmbH in Kronberg as Managing Director. Today Thorsten is the Managing Partner of GAIN and he looks back on hundreds of search assignments, he placed successfully.

Thorsten is a graduate civil engineer (TU Darmstadt), has a certificate in professional real estate management (IHK) and is a certified user of the “Golden Profiler of Personality (GPOP)”.

Founding Partner

FROM STUDENT TO VISIONARY ENTREPRENEUR

The Managing Partner and founder of GAIN, Wolfgang Doell, has more than 33 years of experience in the search for specialists and executives and has managed more than 600 international and national search mandates in almost all functional areas of the automotive and manufacturing industries.

After completing a degree in business administration in Frankfurt (1986) and a part-time Executive MBA in England (1997), he started his professional career in the marketing department of a publishing company. For the next 14 years, he held various areas of responsibility at Heidrick & Struggles, including as a core member of the Automotive Practice Group and as Managing Director of a wholly owned subsidiary. He then joined Deininger Unternehmensberatung, where he became Managing Director. From 2005 to 2012, he was Managing Partner and co-founder of the German Courland organisation and also acted as a member of the Global Executive Advisory Board.