Get to know MCI
We're a diverse team of design-led advisors, thinkers, and doers
Office list
Operating globally, working locally.
Select region and country to view our local offices.
Europe
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Sprengersteig 2
1160 Vienna
Austria
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Avenue des Arts 47
1000 Brussels
Belgium
+32 2 320 25 03
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Main office entrance, 3rd floor
Metro: TRONE 150 m (Line 2 & 6) Bus: TRONE 180 m
Tram: PALAIS 487 m
Train: LUXEMBOURG 578 m
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Karla Englise 3201/6
150 00 Prague
Czech Republic
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25 Rue Anatole France
92300 Levallois-Perret
France
+33 (0)1 53 85 82 82
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7 Priory Office Park Stillorgan Rd,
Blackrock, Co. A94 FN26
Dublin
Ireland
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Via Flavio Domiziano,
10 00145
Rome
Italy+39 06 70495693
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Schipluidenlaan 4,
1062 HE
Amsterdam
The Netherlands+31 20 570 9600
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Suite A, Level 11 Largo
Campo Pequeno 2
Lisbon 1000-078
Portugal+ 351210513131
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Carrer de Tuset, 32
08006
Barcelona
Spain+34 934 45 97 20
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Calle Gran Via 33, 8D
28013 Madrid
Spain
+34 911 42 05 80
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Rue de Pré-Bouvier 9
1242 Satigny
Geneva
+41 22 33 99 500
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America
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Av. Córdoba 883
Piso 11 CP C1054AAH
+54 11 5252 9801
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Rua Prof Jose Leite e Oiticica, 530,
sala 13 e 17 - Vila Gertrudes CEP 04705-080
+55 11 3056-6000
faleconosco@wearemci.com
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849 Fairmount Avenue,
Suite 102
Towson, MD
USA 21286+1 (410) 584-1900
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233 S Wacker Drive,
Suite 4400
Chicago, IL
USA 60606+1 (312) 265-2907
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5717 Legacy Drive
Suite 250
Plano, TX
USA 75024+1 (972) 349-7300
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1660 International Drive,
Suite 600
McLean, VA
USA 22102+1 (703) 506.3260
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Middle East
Asia Pacific
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19 Harris Street,
Level 2 Pyrmont NSW 2009
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3 Albert Coates Lane
Melbourne Victoria 3000
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3A Level 3 200 Creek Street Spring Hill
Queensland 4000
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Level 10, World Trade Tower
No. 500 Guangdong Road Huangpu District,
Shanghai 200001
People's Republic of China+86 021 53861280
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21/F Connaught Commercial,
185 Wanchai Road, Room 2101 & 2102 Wanchai
Hong Kong SAR
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Av. Marciano Baptista,
No. 26. Centro Comercial Chong Fok, 9F
Macau SAR
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Jl. Majapahit Nomor 26,
Petojo Selatan, Gambir, Jakarta Pusat Rukan Golden Centrum Blok D-E, Surprise Building 3rd Floor DKI
Jakarta 10160
Indonesia+62 3890 2200
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Daidoseimei Kasumigaseki
Bldg. 1-4-2 Kasumigaseki Chiyoda-ku
Tokyo, Japan 100-0013
+81-3-3508-9031
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BS Bendemeer Centre 20
Bendemeer Road, #04-02
Singapore 339914
+65 6496 5500
gina.ang@wearemci.com (corporate)
marcel.ewals@wearemci.com (association)
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4F, 57 Teheran-ro
87-gil Gangnam-gu Seoul,
Korea (06166)
+82-2-576-9945
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Office
Connect
Global leadership team
"It is no longer about who attends your programs or reads your content but about who engages."
Sebastien Tondeur is the second-generation mci group CEO, having led multiple company transformations and significant growth of the family business he joined in 1997. He studied finance and international business, and has an MBA from Northeastern University. He regularly speaks at international events and is often interviewed by business and marketing media for his insights on building a global and human-centred business. Sebastien is the co-founder of the Entrepreneur Organisation (EO) in Switzerland. In 2011 he won the prestigious ‘‘EY Switzerland Entrepreneur of the Year’’.
Sebastien Tondeur
Chief Executive Officer
"Openness to diversity and a deep interest in what others bring to the table: these are the building blocks of collaboration."
As President & COO at mci group Jurriaen is jointly responsible for the management and strategic direction of mci group. Day-to-day, Jurriaen works on the strategic direction of the group, oversees execution of the business plans, leads operational teams, works with the leadership to ensure the smooth running of the company, and manages the integration of new MCI offices. And so much more. His educational background includes an MBA from SKEMA in France, a diploma in PR & Communication, as well as a host of Executive Education Programmes covering finance and management from business schools like Harvard, INSEAD, IMD, IESE, and London Business School.
Jurriaen Sleijster
President & Chief Operating Officer
"Strategic engagement of core stakeholders, both virtually and live, will be the key success factor for any organisation."
Robin has driven mci group’s expansion outside of Europe since 2007. He is jointly responsible for the leadership and strategic direction of the group and leads its M&A activities. Day-to-day, Robin consults for associations on strategic planning, board assessment and global growth strategies, speaks at international business events and works with several leading industry organisations at the forefront of knowledge exchange. He is one of only two non-North American Fellows of ASAE – Center for Association Leadership.
Robin Lokerman
Group President
"Shaping our company to build a high-performance organisation based on our values and culture to maximise the power of human interactions."
Idoia has been a part of MCI for over 23 years. She is an expert in the international meetings and events industry. Since 2009, she is leading the multi-brand office in Brussels, focusing on European Business Events, Communications, and Public Affairs.
In 2024, Idoia was appointed Group President of People & Culture | Belgium | Logos & Insidery. In her new role, Idoia is leading the Global People & Culture Team, fostering collaboration, trust, and success across all teams.
Idoia Rodés Torróntegui
Group President People & Culture | Belgium | logos & insidery
"I believe creative thinking leads to higher levels of engagement. Creativity enables cultivating a connection with audiences to help them feel represented and understood."
Sylvia Andre is Chief Marketing Officer and Chief Creativity Officer of mci group. In this role, Sylvia oversees the marketing strategy and guides the creative community to support their ongoing quest to inspire, innovate and create ideas to solve customers’ key challenges. Following formal training with WPP companies, Sylvia rose through the ranks to take on senior roles with Ogilvy, and Young & Rubicam. Plus, as a creative marketing guru with an entrepreneurial streak, Sylvia ran her own successful marketing and media agency in Australia.
Sylvia Andre
Chief Marketing Officer and Chief Creativity Officer
"Magic happens at the intersection of 'trust your instincts' and 'trust the data'. Intelligence without courage won't take you far."
Oscar is an expert in the international meetings and events industry, having worked for mci group for more than 10 years across 3 different continents: Europe, America and Asia. Since 2012, he has been leading mci group’s expansion in the digital era from Singapore as the region’s COO, crafting strategic and creative client solutions to incorporate digital technologies into the company’s suite of services. Currently, Oscar supports the global formulation, facilitation and communication of mci group’s strategic initiatives and future goals.
Oscar Cerezales
Chief Strategy Officer
"For me, it's important to make my team believe in honesty and people as much as I do."
Edouard joined mci group as a consultant in 2011. Since then, his position has grown to Chief Information Officer, seeing him leading the charge in security, innovation and operations throughout the group. Long before the call for it in 2020, Edouard’s vision for cloud-based and remote working has been ensuring that mci group can operate efficiently, safely, and on a global stage.
Edouard Duverger
Chief Information Officer
"At mci group, we believe that every project is an opportunity to make a difference."
Cathie is dedicated to creating exceptional meetings and events that align with our clients’ business objectives. Having previously led successful teams at a number of global agencies, she brings 20+ years of experience in events and communications as COO – Europe, where she oversees European operations and growth strategy. Cathie’s experience in business strategy, operations management and client service enables her to drive innovation and operational excellence in her role.
Cathie Cusin
Global VP Meetings & Events
"Engagement is the fuel that ignites our desire to collaborate, share ideas, and make a positive impact on the world around us."
With over two decades of experience in association management, strategy, marketing and engagement, Nikki empowers our client organisations to achieve their goals and thrive in the digital era. She has earned a reputation for delivering innovation and exceptional results. As Vice President of Engagement, Associations & Communities at mci group, she leads a global team of experts in developing strategies to create meaningful connections and foster engagement with diverse audiences.
Nikki Walker
Global VP Associations
"Our financial data and technology solutions deliver the insight at the right time to support our client operations and strategic execution decisions."
As Chief Financial Officer, Olivier Giauque oversees the planning, implementation and running of all financial activities of mci group across all offices and brands. He joined the company in 1998 after working for accounting and auditing firms, where he completed the Swiss Federal Diploma in Finance and Accounting. Olivier was promoted to the Global CFO position in 2009 and is a member of the Executive Committee and the Global Management Team.
Olivier Giauque
Chief Financial Officer
"The best leaders cultivate a wide field of vision, as many of the most exciting opportunities for growth and innovation reside along the path less taken."
Tom Gibson, CEO of MCI USA, is a respected senior executive, having spent his career building teams and structures that deliver sustainable success. Tom leads our growth strategy in the US.
Tom is a serial entrepreneur, having launched successful businesses in the association management, association meetings and events, and corporate events sectors.
Tom Gibson
Chief Executive Officer, USA
"Our passion for creating engaging experiences for our clients is what drives us forward."
We take pride in our commitment to client success, and are dedicated to fostering meaningful strategic relationships across our diverse portfolio of clients. I’m excited to be a part of a company that is focused on creating experiences that leave a lasting impression, and I’m committed to helping our clients harness the power of engagement to build a better future for all.
Richard Torriani
Chief Operating Officer, Americas
Awards
Eventex Awards 2021
Silver award - MCI Ireland
CN Awards
PCO Agency of the Year 2021 - MCI UK
EVENTS INDUSTRY AWARDS 2021
Best Virtual Event - MCI Ireland
Marketing Events Awards 2021
Silver for Best Content Creation for A Virtual Event – MCI Singapore
ABPCO Excellence Awards 2021
Best Conference by an Agency Conference Organiser – MCI UK
Premio Caio 2021
Silver award - MCI Brazil
MALT Excellence Awards 2022
Exceptional Association event of the year 2021 for 15th International Conference on Greenhouse Gas Control Technologies (GHGT 2021) – MCI UAE
MALT Excellence Awards 2022
Outstanding Government Sector Event 2021 for Abu Dhabi Business Events Week 2021 (ADBEW 2021) – MCI UAE
Marketing Events Award
Gold Award | Best Virtual Event (B2B) - MCI Asia Pacific
Marketing Events Award
Silver Award | Best B2B Event: Conferences/Meetings/Seminars – MCI Asia Pacific
Marketing Events Award
Bronze Award | Best B2B Event: Conferences/Meetings/Seminars – MCI Asia Pacific
Sustainability & Diversity