Sergio Castagna

When performance no longer matches potential. I lead at the intersection of business, finance and AI-driven operating systems — designing organizations where technology, automation and human expertise work together to deliver scalable, high-performance outcomes. My senior leader background help me to define strategic vision with execution discipline, always grounded in P&L ownership and value creation. I operate with an investor mindset — bringing clarity to complex environments, structuring what lacks direction, and deciding under uncertainty. As a founder, I built an AI-native business from the ground up. That experience shaped my conviction that the next generation of companies will be defined by how they redesign their operating models around AI. Available part-time, full-time or on-demand, depending on the mandate. I travel and base myself on-site when the mandate requires it (Internationally mobile).

Founded and scaled a premium omnichannel skincare concept combining facial treatments, curated product retail, and direct-to-consumer e-commerce. Glowing Skin delivers a personalized client experience, supported by digital performance and operational excellence. • Designed and launched the business model from concept to execution: skincare studio, physical boutique, and e-commerce platform • Led the brand strategy, visual identity, and client experience across all touchpoints • Built and managed all core functions: operations, finance, marketing, and customer relationship management • Developed and executed a digital growth strategy using SEO, digital advertising, email marketing, and social media activation • Implemented automation and CRM workflows to support retention, upsell, and recurring revenue models • Achieved +94% YoY revenue growth in 2024, followed by +34% YTD in 2025; doubled online conversion rate and increased order volumes by +27% year-over-year

• Contributed to European finance operations for a $1B business unit, ensuring compliance with US GAAP, Swiss GAAP and local statutory requirements for the Swiss entity • Actively participated in the transition of finance functions from Paris to the new European headquarters in Switzerland, including implementation of accounting and regulatory processes • Supported the rollout of shared financial services in Brno (Czech Republic), helping standardize workflows and reduce operational inefficiencies • Designed and executed a European cash pool structure, improving cash visibility and optimizing liquidity management • Acted as a key partner in the Oracle ERP migration and supported transformation initiatives across finance and treasury • Liaised with internal and external auditors, tax authorities, and legal advisors to ensure smooth regulatory reporting

• Oversaw finance and HR for the CHF 100M Swiss subsidiary, reporting directly to the Group CFO and General Manager • Delivered the company’s first profitable year after 5+ years of losses through revenue growth initiatives and strict cost control • Opened 30 shop-in-shop retail locations across Switzerland in just 6 months to accelerate market expansion • Designed and implemented an inventory and loss prevention department, significantly reducing shrinkage and improving margins • Represented the company in legal proceedings related to labor and commercial disputes, coordinating with external counsel • Introduced internal planning and financial reporting tools to enhance operational control

• Conducted audits of multinational and mid-cap companies across various sectors, including financial services, retail, and industry • Led annual and consolidated financial statement audits under Swiss GAAP, with exposure to US GAAP and IFRS frameworks • Performed internal control reviews and risk assessments to identify and mitigate key financial and operational risks • Participated in IT consulting engagements, including ERP system implementations and process audits • Delivered findings and strategic recommendations to senior finance stakeholders and audit committees