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Our team comprises experienced professionals in the fields of insurance and reinsurance with each individual bringing in a wealth of specific knowledge. We work closely together and take an interdisciplinary hands-on approach to each project.

Operations & Services

  • Martin Brumberg

    Co-Founder & Managing Partner - Operations & Finance

    Martin is a mathematician who joined the reinsurance industry in 2007. He worked as treaty underwriter, as reinsurance manager of an insurance pool and as reinsurance broker in the Continental European and London markets. Martin started his career with Swiss Re as one of the Swiss Re Academy’s graduates. He is one of the founding partners and managing directors of GMBC responsible for operations and finance. Martin and his team are based in Hamburg and focus on administrative, operational and all other technical support for our clients.

  • Mascha Buxbaum-Parikova

    Reinsurance Services

  • Uwe Focht

    Co-Founder & Managing Partner – Reinsurance Services

    Uwe started his career in the insurance industry in 2003 as a lecturer in insurance economics and reinsurance at the University of Hamburg. From 2007 he worked for Swiss Re underwriting Property and Casualty business in various markets across Europe and Asia. Before joining GMBC in February 2016, he was Swiss Re’s Head of Property Treaty Underwriting for China, based in Beijing. Uwe is one of the managing directors, based in Hamburg, with an overall responsibility for Reinsurance Services. He has a Diploma in Mathematics and Business Administration and a Ph.D. in Insurance Economics.

  • Derya Tüncel

    Operations & Accounting

  • Veith Huesmann

    Operations & Finance

  • Stefanie Koch

    Regulatory & Compliance

  • Shuang Song

    Operations & Finance

  • Elena Năstase

    Reinsurance Services

Business Development

  • Sergey Grazhdankin

    Co-Founder & Managing Partner – Business Development

    Sergey started out insurance career in 2002. Since then he has held various positions in general insurance and reinsurance underwriting as well as reinsurance broking in Continental Europe and the London market. Having started in the large P&C projects department of an insurance company, he has gained broad technical know-how over several years with both Munich Re and Swiss Re in Germany, and on the broking side with Willis Global, Willis Re and JLT Re in London. Sergey is based in our Munich office and looks after GMBC business development, marketing and sales.

  • Alexander Farafonov

    Delegated Underwriting Authority – Structuring & Reinsurance


Marketing & Communications