Stefan Keller

Expert Wind Technology at DIS/CREADIS - Co-founder and Co-CEO at Optimized Generators

Greater Barcelona Metropolitan Area

About

Experience

  • Optimized Generators ()
    • Co-founder and Co-CEO
      Jan 2026 - Present · 7 mos

      Sharing the CEO position with Blai Pie Valls, focusing on company strategy, public funding and business development.

    • Co-founder and Advisor
      Mar 2023 - Dec 2025 · 2 yrs 10 mos

      Technical and strategy advisory, partial ownership of the company.

  • DIS - CREADIS Engineering Solutions & Consulting ()
    • Expert - Wind Technology
      Oct 2024 - Present · 1 yr 10 mos

      Accompanying our projects from identification of customer needs to delivery of the solution, with focus on ensuring quality of our offering and of our delivery. Working globally across all our business units and covering the complete product lifecycle.

    • Engineering Director - International Business Unit
      Aug 2021 - Oct 2024 · 3 yrs 3 mos

      Leading the engineering team of the international business unit of CREADIS, providing design solutions to various companies in the field of renewable energies.

  • GE Renewable Energy (5 yrs 9 mos)
    • Leader Fleet Support Engineering
      Apr 2020 - Jul 2021 · 1 yr 4 mos

      Leading a team of specialists resolving major fleet issues.

    • Technical Leader Fleet Support Engineering
      Jan 2019 - Mar 2020 · 1 yr 3 mos

      Leading of root cause analysis and resolution of major fleet issues of onshore wind turbines.

    • Wind Turbine Systems Integration Leader
      Dec 2017 - Dec 2018 · 1 yr 1 mo

      Leading systems integration in offshore wind turbine development projects.

  • Alstom Power (8 yrs 10 mos)
    • Head of Permanent Magnet Generators Area
      Feb 2012 - Oct 2015 · 3 yrs 9 mos

      Building up and leading a team of electrical and mechanical engineers developing permanent magnet generators for offshore wind turbines, covering feasibility studies, conceptual and detailed design, mock-up testing, certification and prototype validation.

    • Manager Critical Technology Electrical Design
      Oct 2008 - Jan 2012 · 3 yrs 4 mos

      Leading 6 teams of electrical and mechanical engineers on 3 sites (Belfort F, Wroclaw P, Birr CH) dimensioning and calculating turbogenerators with ratings from 50 MVA to 2000 MVA.

    • Group Leader Electrical Calculation
      Aug 2007 - Sep 2008 · 1 yr 2 mos

      Leading a team of electrical engineers dimensioning and calculating turbogenerators with ratings from 50 MVA to 2000 MVA.

  • Teaching Assistant at Ecole Polytechnique Fédérale de Lausanne (EPFL)
    Sep 2003 - Dec 2006 · 3 yrs 4 mos

    Project work for industrial customers and supervision of electrical machines exercises, laboratory and students projects.