Dassault Systèmes Executive and Leadership Team

June, 2026

Leadership Overview

Dassault Systèmes has 10 executives leading key functions including strategy, technology, operations, and finance.

Driven by innovation, Dassault Systèmes is dedicated to empowering businesses with 3D virtual universes and advanced design software, fostering a philosophy of collaborative creation and sustainable progress across global markets.

Leadership Roles at Dassault Systèmes

  • President & Chief Executive Officer - Tomosuke Senta
  • Chief Executive Officer, Simulia Brand - Michelle Ash
  • Chief Financial Officer - Gustavo Castro
  • Chief Financial Officer (China) - Catherine Di
  • Chief Financial Officer, Greater (China) - Ellen Sword
  • Chief Financial Officer, Simulia - James Lambert
  • Chief Financial Officer (Japan) - Aniello D'Ascoli
  • Chief Financial Officer (Americas) - Ludovic Monchal
  • Chief Operating Officer - Mohammad Sedaghat
  • Chief Technology Officer - Wido-Bart Steenbergen
  • Tomosuke Senta - President & Chief Executive Officer

    Tomosuke Senta, the President & Chief Executive Officer at Dassault Systèmes, directs the overarching corporate strategy and global operations. Senta guides the company's vision for 3D virtual universes and design software, ensuring alignment with market demands and technological advancements. This leadership role involves driving innovation across all business units, including the development and deployment of 3D CAD, simulation, and business analytics software. By focusing on sustainable growth and customer value, Tomosuke Senta ensures the company maintains its position as a leader in digital transformation. The executive's focus extends to fostering strategic partnerships and expanding market reach, particularly in key regions like North America and Europe, to solidify Dassault Systèmes' global footprint and impact.

    Michelle Ash - Chief Executive Officer, Simulia Brand

    Michelle Ash, the Chief Executive Officer, Simulia Brand at Dassault Systèmes, directs the strategic vision and business development for the Simulia brand. Ash leads the global expansion and market positioning of Dassault Systèmes' simulation software solutions, driving innovation and customer adoption. This leadership role involves overseeing product development, sales, and marketing initiatives to enhance the brand's competitive edge. Michelle Ash fosters key partnerships and client relationships to solidify Simulia's presence in critical industries worldwide. The Chief Executive Officer, Simulia Brand's mandate is to ensure the brand's continued success and technological leadership in the simulation and virtual testing space across global markets.

    Gustavo Castro - Chief Financial Officer

    Gustavo Castro, the Chief Financial Officer at Dassault Systèmes, directs the company's financial planning, reporting, and investment strategies. Castro oversees all financial operations, including budgeting, forecasting, and capital management, ensuring fiscal health and sustainable growth. This executive role involves managing financial risks and identifying opportunities for revenue enhancement across global markets. Gustavo Castro guides the financial aspects of mergers and acquisitions, contributing to the company's strategic expansion. The Chief Financial Officer's oversight is essential for maintaining investor confidence and supporting the financial integrity of Dassault Systèmes' diverse software offerings, particularly in core markets like Europe.

    Catherine Di - Chief Financial Officer (China)

    Catherine Di, the Chief Financial Officer (China) at Dassault Systèmes, leads financial operations and strategy specifically for the Chinese market. Di manages financial planning, accounting, and reporting, ensuring compliance with local regulations and corporate standards. This role involves optimizing financial performance and resource allocation within the region to support business growth. Catherine Di provides critical financial insights to regional leadership, guiding investment decisions and managing fiscal risks. The Chief Financial Officer (China)'s focus is on driving profitability and ensuring the financial stability of Dassault Systèmes' operations in this key geographic area, contributing directly to the company's Asia-Pacific strategy.

    Ellen Sword - Chief Financial Officer, Greater (China)

    Ellen Sword, the Chief Financial Officer, Greater (China) at Dassault Systèmes, oversees comprehensive financial management across expanded Chinese territories. Sword directs financial planning, analysis, and reporting, ensuring robust fiscal controls and strategic resource deployment. This position involves navigating complex financial landscapes to maximize profitability and support market penetration. Ellen Sword collaborates closely with regional business leaders to drive financial performance and mitigate economic uncertainties. The Chief Financial Officer, Greater (China)'s mandate includes fostering financial discipline and ensuring the long-term economic viability of Dassault Systèmes' initiatives within this vital global market.

    James Lambert - Chief Financial Officer, Simulia

    James Lambert, the Chief Financial Officer, Simulia at Dassault Systèmes, directs the financial strategy and operations for the Simulia brand. Lambert manages all aspects of financial planning, budgeting, and performance analysis, ensuring the fiscal health of this specialized business unit. This role involves optimizing financial resources to support the development and marketing of simulation software. James Lambert provides critical financial guidance to the Simulia leadership team, driving profitability and strategic investment decisions. The Chief Financial Officer, Simulia's oversight is essential for aligning financial objectives with the brand's innovation goals and market expansion efforts across key global sectors.
    James Lambert

    Aniello D'Ascoli - Chief Financial Officer (Japan)

    Aniello D'Ascoli, the Chief Financial Officer (Japan) at Dassault Systèmes, spearheads financial management and strategic planning for the Japanese market. D'Ascoli oversees all financial activities, including accounting, reporting, and treasury functions, ensuring adherence to both local and corporate financial standards. This position is vital for driving financial performance and supporting business growth within Japan. Aniello D'Ascoli collaborates with regional management to implement effective financial controls and identify opportunities for fiscal optimization. The Chief Financial Officer (Japan)'s leadership ensures the financial integrity and sustainability of Dassault Systèmes' operations in this significant Asian market.

    Ludovic Monchal - Chief Financial Officer (Americas)

    Ludovic Monchal, the Chief Financial Officer (Americas) at Dassault Systèmes, leads financial strategy and operations across the North and South American continents. Monchal directs financial planning, analysis, and reporting, ensuring robust fiscal management and compliance throughout the region. This executive role involves optimizing financial resources to support market expansion and drive revenue growth. Ludovic Monchal provides essential financial insights to regional leadership, guiding investment strategies and managing economic risks. The Chief Financial Officer (Americas)'s focus is on enhancing profitability and ensuring the financial stability of Dassault Systèmes' extensive business activities within this critical global territory.

    Mohammad Sedaghat - Chief Operating Officer

    Mohammad Sedaghat, the Chief Operating Officer at Dassault Systèmes, executes the operational strategies that support the company's global business objectives. Sedaghat manages the day-to-day operations, ensuring efficiency and scalability across all departments, including software development, sales, and customer support. This leadership position involves optimizing internal processes and resource allocation to drive productivity and enhance service delivery. Mohammad Sedaghat oversees the operational integration of new technologies and product lines, ensuring seamless deployment worldwide. The Chief Operating Officer's responsibilities extend to managing global supply chains and operational infrastructure, critical for supporting the company's extensive product suite and client base across the Americas and beyond.

    Wido-Bart Steenbergen - Chief Technology Officer

    Wido-Bart Steenbergen, the Chief Technology Officer at Dassault Systèmes, architects the company's technological roadmap and innovation pipeline. Steenbergen oversees the research and development of cutting-edge 3D design, simulation, and virtual lab software, ensuring Dassault Systèmes remains at the forefront of digital engineering. This critical role involves managing the integration of advanced technologies, such as AI and cloud computing, into the product portfolio. Wido-Bart Steenbergen drives the technical strategy for natural resources modeling and scientific software, supporting diverse industries globally. The Chief Technology Officer's efforts are crucial for enhancing product capabilities and delivering robust solutions that meet complex client needs across EMEA and Asia.

    Explore Leadership Teams in Engineering Software

    Frequently Asked Questions Regarding Dassault Systèmes Top Executives and Leadership Team

    Who leads Dassault Systèmes?
    Dassault Systèmes is led by Tomosuke Senta (President & Chief Executive Officer), along with executives such as Michelle Ash (Chief Executive Officer, Simulia Brand) and Gustavo Castro (Chief Financial Officer).
    Who is part of Dassault Systèmes’s executive team?
    The executive team of Dassault Systèmes includes leaders such as Tomosuke Senta (President & Chief Executive Officer), Michelle Ash (Chief Executive Officer, Simulia Brand), Gustavo Castro (Chief Financial Officer) and other senior executives.
    How many executives does Dassault Systèmes have?
    Dassault Systèmes has 10 executives leading key business areas.
    What roles are included in Dassault Systèmes’s leadership team?
    The leadership team of Dassault Systèmes includes roles such as President & Chief Executive Officer, Chief Executive Officer, Simulia Brand, Chief Financial Officer, Chief Financial Officer (China), Chief Financial Officer, Greater (China).