Mobile World Congress 2025

Florence Verzelen is Dassault Systèmes Executive Vice President in charge of Industry, Marketing & Sustainability since 2018. Her role is to grow the portfolio of solutions & significantly increase the revenues of Dassault Systèmes in the 12 industries it serves, in order to achieve sustainable growth and rapid business development. To this end, she focuses on creating "forward looking" industrial solutions that will help all industrial players to transform through digitalization. Florence has also created the sustainability function within Dassault Systèmes, with the vision that digital solutions can help transform the industries for them to become more sustainable. She is also leading Dassault Systèmes service organization, transforming its business model towards "outcome based" solutions.

Before this latest appointment, Florence was working at Engie, a world leader in the energy sector holding different positions, as Business Development Vice President, Engie Qatar CEO, Performance Plan Vice President and finally Engie Europe COO.

Florence has an extensive experience in both public & private sector, having held different positions in the European Commission and the French Administration.

She is also an experienced board member, currently at Nexity, France's leader in real estate development and services, CNES, the French Space Agency, France 2030, the Advisory Body of the French Government on his Industrial Strategy & Institute Montaigne, the leading think tank in France. Florence is a graduate of Ecole Polytechnique / Corps des Mines.

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.

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.

Since joining a DotCom startup at the turn on the millennium, Tom has built transformational business at growth companies.He has worked both pre- and post-exit, as a startup founder and manager within large enterprises such as Microsoft, Publicis Groupe and BOSCH.

As CTO of the digital agency Razorfish in Germany, he led first-of-a-kind programs for brands such as Audi and Novartis, enhancing real-world products with virtual experiences.

Tom later co-founded COBI - the IoT startup developing technology for more intelligent mobility, safety and style on two wheels. Following the acquisition by BOSCH eBike Systems, Tom continued to work on the IoT architecture linking hardware systems to the user experience of light electric vehicles.

Now CEO of 3DEXCITE at Dassault Systèmes, Tom leads a global organization of technologists and creative experts, focused on the development and delivery of virtual commercial twins to industrial companies. 3DEXCITE delivers software and solutions to manufacturers, which enable high-fidelity virtual representation of products in customer- and end-user applications.

Having spent more time working abroad than at home in the UK, Tom speaks German and French. He coaches a Little League Soccer team at weekends in W. London and plays Fortnite with his kids in the evenings.

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.

Marc Overton is Managing Director for Northern Europe of Dassault Systèmes, a company that is empowering organisations to sustainably invent, learn, produce, and trade in entirely new ways. 

Marc was previously a member of the executive team of EE/Orange in the UK, and has also held senior leadership positions at First Data, Cisco and Sierra Wireless and helped establish BT’s Division X, targeting specific industry solutions using 5G Private Networks and IoT. In addition to being an established international technology businesses executive, Marc has been a UK Army Reservist for 37 years. 

He is currently serving as the Assistant Chief of the Defence Staff (Reserves and Cadets) and as the Digital Non-Executive Director for Defence Equipment & Support, supporting all equipment and services for the UK Armed Forces.

Since December 2019, CEO of CATIA at DASSAULT SYSTEMES.

He started his career at Dassault Systèmes (3DS) in 1995 in CATIA’s Shape Design Industrialization Team. Then, he joined 3DS International Automotive Competency Center working with renowned customers like HONDA, FIAT, BMW, CHRYSLER and PSA to help them transform their design practices in the area of car body and styling. Through these experiences, he acquired deep knowledge of the automotive sector and customers’ business processes.

In 2011, he was appointed Vice President of the new defined Transportation & Mobility industry, which assists manufacturers and suppliers in developing new mobility experiences for their consumers.

As CATIA CEO, he is looking forward to empower the Community of Design Innovators to Engineer & Experience the best System of System from Concept to Experience Driven Engineering.

Morgan ZIMMERMANN joined EXALEAD in 2006 as Director of Strategy, Sales & Business Development. He took part in the international development of the brand in Asia, Europe, and the United States and was appointed CEO in 2015. Originally, EXALEAD supported major accounts on the use of web technologies as a vehicle for transforming transactional information systems.

Since the acquisition of EXALEAD by Dassault Systèmes in 2010, Morgan ZIMMERMANN has rebuilt EXALEAD's product portfolio to accelerate value creation across the 12 industries served by Dassault Systèmes to:

Transform knowledge of engineering and purchasing into performance and cost reduction levers
Transform the implicit know-how (working methods, processes) of engineering and manufacturing into levers of operational excellence
Exploit the data generated by consumers/end-users to support the client's digital transformation
In 2018, Morgan ZIMMERMANN was named CEO of NETVIBES EXALEAD in order to leverage the NETVIBES ability to provide in-context insight from the market and industry into all enterprise business processes. Prior to joining EXALEAD, Morgan Zimmermann led the business development of Cril Telecom Software, a software publisher in global mobile networks.