The Founders

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Jens Lönneker

CEO, Owner, Managing Director

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    Place of birth: innerdeutsches Migrantenkind: Born in Hannover, grew up in Cologne


    Likes: Looking, marvelling, changing perspectives, implementing projects.

    And especially loving, arguing with my wife and bringing up our children together


    Favourite products: quite a lot – e.g. Lindt chocolates, Brooks running shoes, Thermomix, Gerolsteiner mineral water, beer and wine, good food, all kinds of media and well-bound books


    Responsibilities: Running the business well



    2011 founded rheingold salon

    2008 won a lifetime membership to Cologne’s ASV Sports and Health Club

    1993 survived first tax inspection

    1987 founded Grünewald & Lönneker – today rheingold Institut

    1987 graduated in psychology

    1985 took part in Cologne’s Rosenmontag parade

    1980 qualified as a banker

    1977 completed school baccalaureate

Ines Imdahl

CEO, Owner, Managing Director

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    Place of birth: Viersen am Niederrhein – in Cologne ‚immigrant‘


    Likes: Running distances of up to 21 km, my children, partying with my husband, writing columns and books – unfortunately, only one so far


    Favourite products: Tesla, formerly: Pampers, 4 children in nappies for approx 3 years each, change them 5 times a day and you come to approx 21,600 nappies!


    Responsibilities: Running the business, ‘design police’ at the salon, the person to blame when things go wrong


    Publications: „Werbung auf der Couch“, was Werbung von Märchen lernen kann (Herder Verlag, 05/2015), Monday column in the Handelsblatt



    2011 founded rheingold salon

    2010 convinced a fantastic team of the salon idea

    2009 birth of Levy, our third son; 2007 birth of Lina, our only daughter; 2004 birth of our second son, Tilman; 2000 birth of our firstborn, Nils

    1999 married my dream man

    1994 joined rheingold for a second time

    1993, 1992 improving employee attendance rates at large companies for the Imar consultancy

    1989 joined rheingold for the first time (then IFM Cologne)

    1988 moved from Rath Anhoven am Niederrhein (a place that’s not on every map) to Cologne

    1986 completed school baccalaureate

    1980, 1982 participated in youth training for Olympic shot-put in Berlin


The Team

Anja Boenke

Management Assistant

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Marco Diefenbach

Senior Project Manager

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    Place of birth: Bensberg


    Likes: Playing music (piano, saxophone, and any other instrument I can get my hands on), painting, trying out new restaurants


    Favorite products: Mövenpick yogurts, Lindt chocolate, Italian shoes, my Volvo 850


    Responsibilities: Co-supervision and support of projects, analytical thinking, but always diplomatically and in a team-oriented way



    Since 2017: Project manager at rheingold salon

    Since 2015 Junior project manager at rheingold salon

    Until 2015 Training to become a psychotherapist, WGI Cologne

    2011-2015 Music workshops for communities and companies, team building with music

    2000-2015 Freelancer at rheingold salon, INNCH, SINUS

    2000 Completed psychology studies (diploma), morphological diploma thesis

    1995-1998 Student assistant (University of Cologne, Psychological Institute)

    1990-1992 Short “foray” into medical school

    1989-1990 Civilian service at St. Franziskus Hospital in Cologne

    1989 Abitur (school-leaving examination) at Musik-Gymnasium Cologne

Ursula Ditzer

Receptionist and Event Service

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Lisa Geiger

Junior Project Manager

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Tilman Imdahl


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Isabel Keidel

Junior Project Manager

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Iris Klug

Management Assistant

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Karin Klumpp

Head of Field Management

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    Place of birth: Überlingen/Lake Constance


    Likes: Traveling, cooking, street food from all over the world, literature and English films, cats, trying new things, e.g. beer brewing course, spice seminar, cheese dairy course in Allgäu, house running, stuntman trial course, Segway riding, rafting, canoeing, wellness days at the thermal baths … generally an epicure


    Favorite products: My Kindle eReader, high-quality foods such as Wagyu beef, Murray River salt, Frantoia olive oil, Treacle Moon shower gel “One Ginger Morning,” Lindt chocolate, all kinds of Jack Wolfskin outdoor products, WMF kitchen accessories


    Responsibilities: Project organization and everything related to it, and the ambition to make sure things run as smoothly as possible



    Since 2016 head of field management at rheingold salon

    2003-2016 Establishment and management of quotapoint studio in Cologne

    2000-2003 Studio manager at quotapoint market research services in Frankfurt/Main

    1999/2000 Foray into publishing (as befits a German studies major), first as a trainee, then as an editor

    Studied German and English language and literature at in Heidelberg (magister Artium), in parallel first contact to market research as an interviewer, recruiter, and project assistant at GIM

    School: Abitur (school-leaving examination) in Friedrichshafen

Jari Lamsfuß

Student Employee

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Christine Liebers

Senior Consultant

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    Likes: Living near the Port of Hamburg and Cologne Cathedral, acting out globalization with the international family and close friends, electro / tech house parties, boxing and snorkeling


    Favourite products: Music, all types of communications media, adidas, swatch


    Responsibilities: Research and strategy, further education



    Since 08.2012, Senior Consultant at rheingold salon

    Head of ‘Depth-Psychology Team’ at Ipsos GmbH, Hamburg

    Project Manager, Monheimer Institut, Monheim am Rhein

    Project Manager, rheingold Institut, Cologne

Erik Mühlfarth

System Administrator

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Hannah Neibecker


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Claudia Schwalm

Field Manager / Project Assistant

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    Place of birth: Bad Hersfeld


    Likes: Watching 1980s TV series, to be wined and dined, doing fun things with good friends, cycling & yoga, shopping at organic supermarkets, being out in nature


    Favorite products: Tea from Pukka, COS, Madara, Nutella


    Responsibilities: Keeping an eye on many things …



    Since 2016 Reception manager/Field manager/Project assistant at rheingold salon

    Previously two years at Hochschule Fresenius

    Six years at PUMA SE as Country Visual Merchandiser

    Studied German language and literature/romance languages/psychology at the University of Cologne

Heike Stadler

Senior Consultant

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Lukas Struwe


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