Cybersecurity Beyond the Tools: Investments,…
Our organization
Executive Leadership
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Matthieu Courtecuisse
Founder & CEO | New York
Matthieu Courtecuisse is the Founder & CEO of Sia (1999). An AI & maths engineer by training, he leads Sia's North America hub from New York. He has authored several books on economics, is active in think tanks such as the Milken Institute and the Economic Club of New York, and received the 2025 SIFMA Foundation Industry Award.
Linkedin Email contact matthieu.courtecuisse@sia-partners.com
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Sandrine Carreau
President & Chief Operating Officer | Paris
Sandrine Carreau is the President & Chief Operating Officer of Sia. After graduating from EDHEC, she joined Sia in 2012 and held various corporate roles before taking on her current position in 2024. She oversees group-wide operations, including M&A strategy.
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Alix de Guibert
Group CFO | Paris
Alix de Guibert is the Group CFO of Sia. After graduating from ESSEC, she began her career in audit, transaction services and advisory at PwC before joining the Group finance leadership at Publicis, then Vivarte. Since 2019, she oversees Sia's financial performance and strategy.
All our leaders
Use the below filters to find experts in your country or your industry.
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Dan Stay
Managing Director, Energy & Utilities | Los Angeles
Dan is a Managing Director in Los Angeles within the Energy & Utilities Business Unit. With 23+ years of experience at Capgemini and EY, he helps energy companies drive digital transformation and sustainability through expertise in decarbonization, e-mobility, and ESG strategies.
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Dario Abreu
Managing Director | New York
Dario is Managing Director based in New York, specializing in banking operations, financial services, business analysis, and project management, with experience in sub-ledger renovation, reconciliations, control standardization, and OFAC compliance.
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David Lynch
Partner | Perth
David is a Partner in the Perth office with over 20 years of experience across Australia and Europe.
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David Prendiville
Partner | Perth
David Prendiville has built a reputation as one of this region’s foremost advisers in business transformation, corporate strategy, and performance improvement.
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David Gallet
Partner, Head of US Risk, Regulatory & Compliance Services | New York
David leads the Risk, Regulatory and Compliance Practice in the US with offerings in AML/BSA, Sanctions, Fraud, Data Privacy, Conduct and Ethics, Cybersecurity, ESG, Legal Operations, Compliance Risk Assessment, TPRM and Operational Risk Management.
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David Hollander
Partner, Financial Services | Singapore
David is partner in charge of Sia activities in Singapore. He leads the development of our practices in Singapore across Financial Service Industries and technologies.
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David Martineau
Managing Partner | Paris
David Martineau is Chief AI Officer at Sia, based in Paris. He supports executive committees and technology leaders across all transformations related to AI adoption. A CentraleSupélec engineering graduate, he has strong expertise in AI, data science, and quantitative analytics.
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David Zar
Principal Consultant, Life Science | Baltimore
David is a Principal Consultant Life Science at Sia.
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Diana Vienne
Partner, Head of Business Transformation, NA | New York
Diana is a Partner at Sia, where she leads the Business Transformation business unit for North America, with over 25 years of experience in business transformation, HR strategy, and change management for Fortune 500 companies.
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Dorine Péchiodat
Managing Director | Paris
Dorine Pechiodat is a Managing Director at Sia. She leads AI and marketing transformation programs in the luxury, retail, and consumer goods sectors, leveraging her expertise in data science strategy and applied artificial intelligence.
- Data & Artificial Intelligence
- Data Science Marketing
- Consumer Goods & Retail
- Marketing & Customer Experience
- Digital Transformation & Data Valorization
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Elisa Chaillot
Managing Director, Government
Elisa is a Managing Director in the Government practice at Sia. A graduate of emlyon and Sciences Po Lyon, she joined the firm in 2016. Specializing in public sector consulting, she leads large-scale transformation, operational performance, and continuous improvement programs for major clients, including the Ministries of Interior and Armed Forces.
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Elizabeth Freeman
Managing Director, Financial Services | Chicago
Liz is Managing Director in our Financial Services Data & AI solutions activities. Based in Chicago, she brings over 20 years of experience in data strategy, AI, and transformation, including leadership roles at CME Group and Deloitte, advising clients on data-driven operating model change and delivering scalable, measurable business impact.
- Data & Artificial Intelligence
- Finance
- IT Strategy & Digital Transformation
- Leadership Development
- Data Strategy, Governance & Management
- Business Transformation
- Business Strategy & Corporate Planning
- Growth & Innovation
- Banking & Capital Markets
