Marco Sieg

Head of Sales North Germany @ Nordex | Driving Growth & Team Excellence | Cross-Cultural Leader with Global Roots

Germany

About

A father to a young lady trying to make the world a little better and sustainable place - Passionate commercial leader with 12 years of experience in international sales, team leadership and business development. • Highly performance driven, diligent and reliable. • Strategic thinker with an analytical mindset. • Strong stakeholder management and excellent communication skills across cultures. • Passionate about undiscovered value creation. Core principles: Accountability, Creativity, Fairness, Reliability, Passion

Experience

  • Head of Sales, Germany North at Nordex Group
    Jul 2025 - Present · 1 yr

    Head of Sales North, responsible for ~50% of the German onshore wind market • Leadership of 7 Sales Managers covering regional and national accounts • Managing Germany’s most strategic and international key customers • Driving order intake, margin performance, and market growth • Shaping Nordex’s commercial strategy and customer partnerships in Northern Germany

  • Vestas (10 yrs)
    • Director, Head of Service Commercial Management Office
      Jul 2023 - Jul 2025 · 2 yrs 1 mo

      • Leading a multicultural team of 7 commercial professionals across 6 APAC countries, driving service excellence in On- and Offshore wind through: - Costing & Pricing - Contract & Product Management - Governance Authority & Strategy Development - Strategic Business Intelligence & Insights - Value Engineering • Steering a yearly €1B service portfolio across multiple projects, ensuring strategic alignment, accurate forecasting and commercial success. • Boosted productivity by 30% through implementing optimized governance frameworks and processes.

    • Director, Head of Service Sales Offshore
      Jul 2024 - Nov 2024 · 5 mos

      • Assumed interim leadership of APAC offshore service business while maintaining primary role, managing commercial activities for 7 major projects. • Directed offshore sales activities across Taiwan, Japan, and Korea, securing two high-value service contracts (Katagami Akita: NTP & undisclosed TW project: Signature). • Led organizational restructuring of regional offshore service team to improve resource utilization.

    • Senior Sales Manager
      Nov 2019 - Jun 2023 · 3 yrs 8 mos

      • Led sales initiatives across markets (Baltics, Poland, Serbia, South Africa), serving as Country Manager for Latvia and closing multiple €20M-€300M projects. Business development activities in Latvia and Serbia. • Developed merchant market strategies (e.g. long term put options, ancillary services) and innovative risk management schemes while serving as Europe's regional anchor for hybrid wind-solar-storage projects. • Enhanced Commercial Engineer performance by designing training programs that reduced onboarding time by 25% and improved employee satisfaction by 13 points.

  • Vossloh Locomotives GmbH (Kiel und Umgebung, Deutschland)
    • International Sales Manager
      Oct 2012 - Aug 2015 · 2 yrs 11 mos

      • Led international sales for customers outside Europe, targeting large state railway clients in Southeast Asia, Sub-Saharan Africa, and the Middle East. • Developed new revenue streams by building multi-level stakeholder relationships—from German ambassadors to state ministers—and managing the full tender-to-contract process for Vossloh Locomotives' largest export project.

    • Dual Study Program - B. Eng. Industrial Engineering
      Sep 2009 - Oct 2012 · 3 yrs 2 mos

      Vocational training as an Industrial Business Administrator.