Christian Twiehaus

Sustainability | Finance | Cognitive Science

Germany

About

My roots lie in business administration, banking, and audit in multinational leading companies. Around 2014, I added sustainability, start-ups, and eventually sustainable finance to my profile. Enriched by more than 6 years of academic research on the cognitive processes of retail investors choosing between more or less sustainable investments, ranging from economics via psychology to neuroscience. Experience with corporate sustainability strategy, including conception of net zero strategy and sustainability risk management, I have experience across the sustainable investment value chain combined with state-of-the-art scientific insights on the matter. By chance, I also happen to engage with software development, providing well-rounded insights from data collection to strategic sustainability management.

Experience

  • Freelance Consultant at Not to be disclosed
    Aug 2025 - Present · 11 mos

    • Reduced manual workload by more than 95% for recurring processes in an SME by developing a Python-based application to automate web, e-mail and file-handling workflows.

  • Spezialist Nachhaltigkeit at W&W-Gruppe
    Apr 2024 - Jul 2025 · 1 yr 4 mos

    • Developed a climate transition plan for the mortgage portfolio in line with EU regulations (CSRD, CSDDD, and CRD), including CO₂ emissions trajectory modelling, KPI definition and integration into the sustainability and risk strategies. • Improved ESG ratings at two agencies by analysing of previous ratings, identifying improvement levers and coordinating targeted enhancements. • Sharpened the sustainability strategy by evaluating peer targets and measures and preparing recommendations on ambition level and strategic priorities.

  • University of Stuttgart (Stuttgart Area, Germany)
    • Manager exam organisation
      Oct 2017 - Mar 2024 · 6 yrs 6 mos

      Semi-annual project management where I organize exams at the university's Institute of Business Administration. - Room planning | time management | coordinating creation, collection, and distribution of exams | advising students on exam-related questions

    • Research Assistant
      Apr 2017 - Mar 2024 · 7 yrs

      Teaching: Exercise "Sustainable Financial Management 1" Exercise "Sustainable Financial Management 2" Exercise "Investment and Financing" Exercise "Investment Theory and Control" Mentoring students in their bachelor's & master's theses Research interests: Neuroeconomics Behavioral Finance Multi-Goal Decision-Making

  • Intern at imug Beratungsgesellschaft für sozial-ökologische Innovationen mbH
    Oct 2016 - Dec 2016 · 3 mos

    To complement my knowledge on finance, sustainability and impact investing, I joined imug to learn about sustainable finance in practice. Responsibilities: - Lead Developer an impact measurement methodology - Performing impact measurement on a social enterprise in active West Africa - Sustainability rating of banks in terms of ESG criteria

  • Assistant Auditor at KPMG Luxembourg
    Jan 2014 - Aug 2014 · 8 mos

    Primarily audit of financial institutions. Complemented with audits of holdings. Responsibilities: Audit of e.g. presentation & valuation of bonds and equity holdings, provisions, derivatives, and subordinated debt.