Mobile World Congress 2024

Olivier Ribet has been a member of the Executive Committee since 2018, in charge of developing Dassault
Systèmes’ market in Europe, Middle East and Africa. He does this with the support of executives in these
regions and their local management committees. In addition, he oversees collaboration among all regional
executives worldwide to define and share best practices with regard to planning, execution and leadership.

Olivier Ribet joined Dassault Systèmes in 2013 as Vice President, High-Tech Industry. In 2017, he was put in charge of all Dassault Systèmes Industries and Cross-Industry Initiatives.

He brings over 20 years of international experience in the software, high-tech and telecoms markets to Dassault Systèmes. Prior to joining Dassault Systèmes, Olivier Ribet held senior management positions in sales and marketing at Bull, EDF and later Microsoft, where he spent more than 15 years. During his career, he has led sales, marketing and software engineering teams in Europe, Asia and the United States.

Stéphane SIREAU is Vice President, High-Tech Industry, at Dassault Systèmes, responsible for helping high-tech companies digitally transform by using the 3DEXPERIENCE platform to build virtual twin experiences.

Stéphane SIREAU has over 20 years of experience working in the high-tech space. Based in Silicon Valley, he led the launch in 2016 of GE Digital’s alliance program in Europe to create new cloud-based industrial IOT solutions. In 2012 he co-founded Orange Mobile Enterprise, Orange’s business unit dedicated to mobility and IOT solutions. As a globally-minded executive, Stéphane has lived and worked in the USA, Europe, and Asia. In 2009 Stéphane set up Orange Institute, a global think-tank dedicated to digital innovation. Prior to that, he worked for 4 years in China where he pioneered Orange’s supply chain management in Asia, including its first program of sustainability audits. In his latest role, Stéphane worked at DNV, one of the world’s leading assurance companies, leading global sales of digital assurance, sustainability, and supply chain solutions.

Stéphane is a British-French dual national and lives in the Paris region. He holds a bachelor’s degree in economics from the London School of Economics (LSE) and is a graduate of ICADE-ICAI (Spain). He received an Executive MBA with distinction from INSEAD and Tsinghua University (China) in 2009.

Laurence Montanari has been leading Dassault Systèmes's solutions for the Transportation & Mobility industry since 2020. With 28 years of experience in the automotive sector, her investment and passion for the automotive industry allows her to lead with Dassault Systèmes customers’ industry transformation programs. Sustainable innovation is necessary in this very challenging industry, where mechanical design and software design need to work together. Trying to change the future requires will-power and curiosity. Taking risks will separate winners from the others.

After graduating from the Ecole Centrale de Nantes in 1992 with a diploma in mechanical engineering specializing in robotics, Laurence Montanari began her career at Renault in Internal Combustion Engine development. She moved to the Services Department, improving the quality of vehicles in use and accelerating recall campaigns. She was then in charge of the Renault Ggroup accessories Business Unit. These different positions allow her to work with engineering, quality, and vehicle car programs, while remaining close to the marketing and sales.

During her career at Renault, she has managed 2 innovative vehicle projects to address the future of sustainable mobility. She managed the pre-study of the Twizy concept in an agile mode in 2008, which was a 2-seater electric, urban vehicle. In 2019, she was head of the Renault EZ FLEX vehicle project to address the last-mile urban delivery solution. It involved the entire ecosystem which shows that it is possible to design and offer different sustainable vehicles and new business models. This shows that the Dassault Systèmes 3DEXPERIENCE platform accelerates the development of such innovative projects.

Anissa Bellini is a strong believer that virtual worlds is a way of improving the real world. She brings 15 years of experience at Dassault Systèmes, initially as Solution consultant and Technical Executive supporting customer engagement worldwide and developing an in-depth market and customer insight. More recently, she oversaw the creation of industry-specific solution experiences as the Solution Portfolio Director for the High-Tech industry. 

Her role now is to lead Dassault Systèmes' strategic direction to strengthen Dassault Systèmes’ position for the manufacturing sector, ranging from High-Tech industry, Transportation & Mobility, Aerospace, Home & Lifestyle... She focuses on the deep transformation of the sector and related next solutions for a more resilient, circular and innovative world.


Anissa holds a Master's Degree in Engineering, specialized in signal processing and digital communications. She has also successfully completed the Executive Leadership Program at INSEAD.