Gregory Weisser

CEO & CFO | Transforming & Scaling Digital Business Models | Building High-Performance Teams | 25+ Years in Digital

Greater Hamburg Area

About

CEO | Former CFO | Digital Advertising & Mobile Adtech Digital native CEO with a strong CFO foundation, combining commercial growth mindset, financial rigor, and operational execution. Focused on building scalable, profitable adtech businesses at the intersection of technology, data, and mobile performance. I bring international leadership experience across programmatic advertising, mobile adtech, e-commerce, media, and IT & telecommunications, working in both fast-scaling environments and complex multinational structures. My background as CFO shapes a data-driven, disciplined leadership style, while my CEO role is centered on growth, market positioning, partnerships, and value creation across the full business lifecycle — from expansion to transformation. Track record includes: - Scaling international organizations and governance structures - Leading M&A and integration projects with commercial focus - Driving process optimization and digitalization - Building and leading distributed teams across continents I believe in clear decisions, strong accountability, and empowered teams that execute with speed and ownership.

Experience

  • Gravite (Hamburg, Germany · Hybrid)
    • Managing Director/CEO
      Nov 2025 - Present · 8 mos

    • Chief Financial Officer
      Nov 2022 - Present · 3 yrs 8 mos

    • Head of Finance
      Aug 2021 - Oct 2022 · 1 yr 3 mos

  • Further Education (M&A and Business Management program) at Sabbatical
    Aug 2020 - Jul 2021 · 1 yr

  • Senior Vice President Finance at Smaato
    Jan 2012 - Jul 2020 · 8 yrs 7 mos

    • Managed, developed and strategically directed - accounting, tax, treasury, controlling, ERP & finance operations - for the global group (5 entities) • Technically responsible for monthly, quarterly and consolidated financial statements - according to HGB, US-GAAP and IFRS • Responsible for investor relations / reporting to shareholders • Overseeing and supporting budget procedures • Handling liquidity planning for the group • Implementing and monitoring the ICS internal control system

  • Finance Controller Germany at AOL Deutschland Medien GmbH
    Jan 2007 - Jun 2011 · 4 yrs 6 mos

    • Executed and monitored monthly, quarterly and annual financial statements - according to German Commercial Code (HGB) and US-GAAP • Deputy Head of Finance and Accounting • Controlled and optimized processes in the finance department • Responsible for budget planning and monitoring • Implemented and complied with SOX guidelines / internal controls • Contact for banks, tax advisors and auditors

  • Finance Manager Germany at MIVA (Germany) GmbH
    Dec 2002 - Dec 2006 · 4 yrs 1 mo

    • Month and Year End Closure • Monthly Billing & Credit Control • Revenue Anaylsis • SOX Control & optimization • Bridgehead to Finance London HQ • Contact for external and internal auditors, tax advisors, banks