- Civil and environmental engineering, Technical University of Darmstadt (Dipl.-Ing.)
            - Industrial engineering, University of Applied Sciences Koblenz (Dipl.-Wirtsch-Ing.)
            - PhD Technical University of Darmstadt (department of waste technology, Dr.-Ing.)

1992-1998        Scientific Assistant, Technical University of Darmstadt, department of waste technology (

            - focuses: Mechanical-Biological Treatment of solid waste (MBT),
            - Landfill simulation & Emissions of greenhouse gases

1998-2008        Consulting engineer, Bjoernsen Consulting Engineers, Koblenz (

            - head of department of waste management and process engineering
            - registered manager of the company
            - Several installations: MBT, Landfill, Composting, Anaerobic Digestion,
              Sorting, biomass-fuels, waste air purification (from project development to realization and takeover, German HOAI 1-9)
            - Management of tenders of service and construction contracts
            - feasibility studies and economic analysis

2008-2013        Director Projects & Asset Management SUEZ BeNeLux&Germany (,

            - Development and realization of various projects in the fields
              of sorting, treatment, recycling and recovery,
              (RDF – refuse derived fuels, plastic and packaging, paper, biomass etc.)
            - Development of an asset management network in BeNeLux-Germany

2013 – to date        Professor of Environmental Engineering; HTWG Konstanz (University of Applied Science,

            - 2014-2021 Vice dean of the department of civil engineering
            - Course leader: environmental engineering & management of resources
            - Teaching and training of students in the fields of: Waste Management & Treatment, Recycling & Recovery, Environmental chemistry, 
              Environmental process engineering, Project development - Investment and financing, Cost and performance accounting
            - Consultant projects development (Suez + affiliated companies & others)