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We are a global engagement marketing agency that unleashes the power of people

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Get to know MCI

We're a diverse team of design-led advisors, thinkers, and doers

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Office list

Operating globally, working locally.

Select region and country to view our local offices.

Americas

    • Av. Córdoba 883
      Piso 11 CP C1054AAH

      +54 11 5252 9801

    • Rua Prof Jose Leite e Oiticica, 530,
      sala 13 e 17 - Vila Gertrudes CEP 04705-080

      +55 11 3056-6000
      faleconosco@wearemci.com

    • 1176 Sherbrooke St W,
      Montreal, Quebec H3A 1R6

      (514) 846-9191
      montreal@wearemci.com

    • 240 Richmond St W, Toronto,
      ON M5V 1V6

      +1 647 689 8560
      toronto@wearemci.com

    • 555 Burrard St, 1st Floor,
      Vancouver, BC, V7X 1M8

      (604) 688-9655
      vancouver@wearemci.com

    • 849 Fairmount Avenue,
      Suite 102
      Towson, MD
      USA 21286

      +1 (410) 584-1900

    • 233 S Wacker Drive,
      Suite 4400
      Chicago, IL
      USA 60606

      +1 (312) 265-2907

    • 5717 Legacy Drive
      Suite 250
      Plano, TX
      USA 75024

      +1 (972) 349-7300

    • 1660 International Drive,
      Suite 600
      McLean, VA
      USA 22102

      +1 (703) 506.3260

    • 19 Harris Street,
      Level 2 Pyrmont NSW 2009

    • 3 Albert Coates Lane
      Melbourne Victoria 3000

    • 3A Level 3 200 Creek Street Spring Hill
      Queensland 4000

    • Level 10, World Trade Tower
      No. 500 Guangdong Road Huangpu District,
      Shanghai 200001
      People's Republic of China

      +86 021 53861280

    • 21/F Connaught Commercial,
      185 Wanchai Road, Room 2101 & 2102 Wanchai
      Hong Kong SAR

    • Av. Marciano Baptista,
      No. 26. Centro Comercial Chong Fok, 9F
      Macau SAR

    • 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

    • Daidoseimei Kasumigaseki
      Bldg. 1-4-2 Kasumigaseki Chiyoda-ku
      Tokyo, Japan 100-0013

      +81-3-3508-9031

    • 4F, 57 Teheran-ro
      87-gil Gangnam-gu Seoul,
      Korea (06166)

      +82-2-576-9945

    • Avenue des Arts 47
      1000 Brussels
      Belgium

      +32 2 320 25 03

    • Main office entrance, 3rd floor
      Metro: TRONE 150 m (Line 2 & 6) Bus: TRONE 180 m
      Tram: PALAIS 487 m
      Train: LUXEMBOURG 578 m

    • Karla Englise 3201/6
      150 00 Prague
      Czech Republic

    • 25 Rue Anatole France
      92300 Levallois-Perret
      France

      +33 (0)1 53 85 82 82

    • Markgrafenstraße 56
      10117
      Berlin
      Germany

      +49 30 204 590
      germany@wearemci.com

    • Adlerstraße 74
      40211
      Düsseldorf
      Germany

      +49 21 167 935 12
      germany@wearemci.com

    • Grindelallee 100
      20146
      Hamburg
      Germany

      +49 40 414 29 00
      germany@wearemci.com

    • Neumarkter Str. 21
      81673
      München
      Germany

      +49 89 549 0960
      germany@wearemci.com

    • Luitpoldstrasse 12
      90402
      Nürnberg
      Germany

      +49 91 147 720 700
      germany@wearemci.com

    • Maybachstraße 50
      70469
      Stuttgart
      Germany

      +49 71 182 0570
      germany@wearemci.com

    • 7 Priory Office Park Stillorgan Rd,
      Blackrock, Co. A94 FN26
      Dublin
      Ireland

    • Via Flavio Domiziano,
      10 00145
      Rome
      Italy

      +39 06 70495693

    • Office Via A. Scialoia, 52,
      50136,
      Florence
      Italy

      +39 055 9067473

    • Schipluidenlaan 4,
      1062 HE
      Amsterdam
      The Netherlands

      +31 20 570 9600

    • Suite A, Level 11 Largo
      Campo Pequeno 2
      Lisbon 1000-078
      Portugal

      + 351210513131

    • Carrer de Tuset, 32
      08006
      Barcelona
      Spain

      +34 934 45 97 20

    • Calle Gran Via 33, 8D
      28013 Madrid
      Spain

      +34 911 42 05 80

    • Kungsholmsgatan 21 112 27
      Stockholm
      Sweden

    • Rue de Pré-Bouvier 9
      1242 Satigny
      Geneva

      +41 22 33 99 500

    • MCI UK Runway East Borough Market
      London SE1 9RS

      +44 20 3530 0100
      hellouk@wearemci.com

    • Mansarovar Building, 3rd Floor
      M G Road 366
      New Delhi - 110030
      India

      +91 (98) 100 36506

    • Centre Point, 205,
      Andheri Kurla Road. J.B. Nagar, Andheri (East)
      Mumbai 400059
      India

      +91 (98) 110 26286

    • Takhassusi Street Olaya
      P.O. Box 52660
      Riyadh,
      Saudi Arabia

    • Dubai World Trade Center
      Sheikh Rashid Tower, Sheikh Zayed Road
      Dubai 124752
      United Arab Emirates

      +971 4 311 6300
      dubai@mci-group.com

Office

Connect

Great ideas start as conversations

Get in touch

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

Sebastien Tondeur

Chief Executive Officer

Jurriaen Sleijster

President & Chief Operating Officer

Robin Lokerman

Group President

Idoia Rodés Torróntegui

Group President People & Culture | Belgium | logos & insidery

Sylvia Andre

Chief Marketing Officer and Chief Creativity Officer

Oscar Cerezales

Chief Strategy Officer

Edouard Duverger

Chief Information Officer

Cathie Cusin

Global VP Meetings & Events

Nikki Walker

Global VP Associations

Olivier Giauque

Chief Financial Officer

Tom Gibson

Chief Executive Officer, USA

Richard Torriani

Chief Operating Officer, Americas

Awards

EVENTEX

Eventex Awards 2021

Silver award - MCI Ireland

CN

CN Awards

PCO Agency of the Year 2021 - MCI UK

EIA

EVENTS INDUSTRY AWARDS 2021

Best Virtual Event - MCI Ireland

MEA

Marketing Events Awards 2021

Silver for Best Content Creation for A Virtual Event – MCI Singapore

ABPCO

ABPCO Excellence Awards 2021

Best Conference by an Agency Conference Organiser – MCI UK

PC

Premio Caio 2021

Silver award - MCI Brazil

MALT

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

MALT Excellence Awards 2022

Outstanding Government Sector Event 2021 for Abu Dhabi Business Events Week 2021 (ADBEW 2021) – MCI UAE

MEA

Marketing Events Award

Gold Award | Best Virtual Event (B2B) - MCI Asia Pacific

MEA

Marketing Events Award

Silver Award | Best B2B Event: Conferences/Meetings/Seminars – MCI Asia Pacific

MEA

Marketing Events Award

Bronze Award | Best B2B Event: Conferences/Meetings/Seminars – MCI Asia Pacific

Sustainibility tile

Sustainability & Diversity

We help our clients transform and promote a more sustainable and inclusive culture.

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