Tatjana Mast, CFA

Head of Finance I Focused. Reliable. Results-driven.

Stadt Hamburg, Hamburg, Germany

About

• Diplom-Kauffrau und Finance Leaderin mit langjähriger Erfahrung in komplexen Konzern-, Fonds- und Beteiligungsstrukturen in den Bereichen Erneuerbare Energien, Asset Management, Gemeinnützigkeit (NGO) und Immobilien • Ausgewiesene Expertin für Finance Transformation, Digitalisierung und Automatisierung von Finanz- und Reportingprozessen in Multi-Gesellschafts-Umfeldern • Tiefes Verständnis für regulatorische Anforderungen (u. a. HGB, KAGB, RechKredV) sowie sichere Steuerung von Governance-, Compliance- und Prüfprozessen • Umfassende Kompetenz im Liquiditäts-, Finanzierungs- und Risikomanagement bei hohen Volumina sowie in der Steuerung kapitalintensiver Geschäftsmodelle • Führungserfahrene Managerin mit nachweislicher Stärke im Aufbau, in der Weiterentwicklung und Führung leistungsfähiger Finance-Teams • Verlässliche Sparringspartnerin für Geschäftsleitung, Investoren, Banken, Wirtschaftsprüfer und Gremien – verbindlich, analytisch und lösungsorientiert

Experience

  • Head of Accounting at Muehlhan Holding Services GmbH at Muehlhan
    Apr 2026 - Present · 3 mos

  • Head of Finance (Brookfield CEE Holding GmbH) at CYCAP
    Jun 2019 - Mar 2026 · 6 yrs 10 mos

    * Overall responsibility for the finance function of a holding structure comprising more than 120 companies in the wind and photovoltaic energy sector * Leadership of the finance and accounting teams (9 employees) * Implementation of a group-wide ERP system (Odoo), resulting in a >50% reduction in document processing time and sustainable process automation * Development of scalable accounting and reporting structures (DATEV, LucaNet), including group consolidation for approximately 60 entities * Establishment of transparent management, investor, and shareholder reporting * Responsibility for liquidity management, financial planning and optimization, as well as the introduction of modern financial controlling tools

  • Head of Accounting and Fund Administration Real Estate (CACEIS Fonds Service GmbH) at CACEIS
    Jan 2018 - Jul 2019 · 1 yr 7 mos

    * Leadership of accounting, tax, reporting, and administrative functions for real estate funds with approximately EUR 2 billion in assets under management * Development of standardized, IT-based controlling and reporting systems * Optimization and digitization of core accounting processes * Responsibility for regulatory reporting, compliance requirements, and audit processes * Leadership and development of employees within the area of responsibility

  • Financial Director at Diocese of Speyer
    Jan 2012 - Dec 2017 · 6 yrs

    * Overall responsibility for accounting, finance, controlling, and tax * Reduction of liquidity management costs by approximately 60% and increase in returns * Shortening of the annual financial statement closing process by around one third * Implementation of modern financial software and sustainable process optimizations * Member of the investment committee, with close collaboration with governing bodies and supervisory boards

  • Director of Controlling/Treasury (Credit Suisse Asset Management Immobilien KAG) at Credit Suisse
    Sep 2002 - Dec 2011 · 9 yrs 4 mos

    * Leadership of controlling and liquidity management * Responsibility for liquidity and cash investments totaling approximately EUR 1.4 billion * Structuring and management of real estate financings amounting to approximately EUR 1.1 billion * Development of a risk management system and meaningful management reporting * Close collaboration with executive management and governing bodies