Ibtissem Maouene

The #1 Chief of Staff Marketplace

COSMIK helps C-levels, companies & brands to improve their operational efficiency, increase their performance, and leverage their ability to execute. * Perform quantitative and financial modeling for growth initiatives, investment cases, and restructuring projects (SaaS, energy, financial services, consulting firms), supporting decisions impacting €50–300M businesses * Conduct market intelligence and competitive benchmarking to guide CEOs’ strategic priorities across Europe, GCC and the US * Synthesize complex data and insights into Board-level presentations, ensuring alignment on strategy and financial targets * Operated cross-functionally with finance, ops, and product leaders to deliver operational efficiency gains and EBITDA improvements *Recruit and assemble key teams & critical operators (CoS, Product, Ops, Strategy, Finance) to accelerate execution and unlock growth for high-velocity organizations

* Provided thought partnership to the CEO on company’s strategic direction and the executive leadership team’s priorities, including corporate strategy * Led special strategic projects that the CEO personally oversees, including driving to successful outcomes * Follow-up of M&A projects, Market analysis, Design of the Strategic Plan 2027 * Oversaw cross-business portfolio planning (6 business units), ensuring resource allocation and performance tracking against strategic KPIs * Identified key stakeholders, engagement priorities, and shadow the CEO to meetings or represent to events such as the UNGA, COP27, WEF Davos Annual Meeting * Member of the General Management Board, Management of one executive assistant

Director’s Office * Conducted quantitative policy and financial impact analysis for the finalization of a landmark reform of the international tax system * Led performance tracking and data-driven evaluation of gender-related public finance policies across OECD countries * Assessed regulatory and tax implications of emerging asset classes (e.g., virtual currencies) through economic and legal analysis * Engaged daily with OECD member states, synthesizing complex legal/financial proposals into actionable recommendations for senior officials

* Provided strategic advisory on public investments in deeptech (AI, Cloud, Cybersecurity), ensuring alignment with France’s digital competitiveness agenda * Contributed investment allocation decisions, drafting high-level notes and financial arguments * Produced executive speeches and strategic briefs for ministerial audiences, simplifying complex policy and economic insights for decision-making

* Launched the #TogetherAtHome campaign, reaching 37M+ users in France through targeted Facebook Ads * Designed and executed data-driven communication & ad strategies to inform and persuade audiences on product, safety, and privacy initiatives * Managed multiple cross-functional projects, collaborating with Policy, Sales, and Partnerships teams to maximize impact

The Collection of Peggy and David Rockefeller represents the largest Art auction of all time and the most significant charity auction ever staged. * Supported communications and cultural policy strategy for the $832M Rockefeller Collection auction, one of the largest in art market history * Drafted and edited 10+ press releases, contributing to 56% media visibility rate and strengthening Christie’s positioning with global stakeholders

* Launched the Center’s digital marketing presence (Facebook & Instagram), driving +34% visibility and audience engagement * Researched and identified funding and philanthropic opportunities, supporting strategic partnerships and financial sustainability