Siham Belhadj Associée – Sustainability

Professional Background

Siham Belhadj joined Mazars in 2013, where she began her career in audit and CSR (Corporate Social Responsibility) advisory, after an initial experience in carbon-focused consulting.

She later gained operational experience as a Chief Sustainability Officer (CSR Director) within a multinational group before returning to Mazars as a Partner in France, specializing in sustainability.

Career & Experience

Her career combines both consulting and corporate experience, with a strong focus on sustainability transformation. She supports organizations in:

• Defining and deploying CSR strategies
• Managing sustainability transformation programs
• Structuring ESG governance frameworks

Expertise & Services

Siham works with companies on:

• ESG and sustainability strategy design
• Regulatory compliance (CSRD and extra-financial reporting)
• Supply chain sustainability and responsible sourcing
• Carbon footprint and climate strategy integration
• Implementation of non-financial reporting frameworks

Areas of Expertise

• Sustainability and ESG advisory
• Corporate social responsibility strategy
• Extra-financial reporting and regulatory compliance
• Climate and carbon strategy
• Supply chain sustainability
• Organizational transformation for ESG integration

Siham Belhadj combines hands-on corporate sustainability leadership with deep consulting expertise, helping organizations structure and implement robust ESG and CSR strategies within Forvis Mazars.