Michael Theiss

Radiotherapy solutions for cancer treatments | Project Manager @ Siemens Healthineers | Varian Business Area

Viersen, North Rhine-Westphalia, Germany

About

WHAT EXCITES ME? Servant Leadership | Developing People & Teams | Intrapreneurship Strategic Problem Solving | Ownership & Accountability | Continuous Improvement Biomedical Engineering | Complex Systems | Quality & Risk Management American Football | San Francisco 49ers | Family | Non‑Fiction Books WHAT I DO? I work as a Senior Project Manager at Siemens Healthineers | Varian, leading complex, cross‑functional initiatives in radiation oncology. My role goes beyond delivery. I focus on: providing direction and clarity in technically and organizationally complex environments enabling teams to take ownership, make sound decisions, and perform sustainably connecting engineering, clinical requirements, and operational realities proactively managing risks, dependencies, and stakeholder expectations driving system upgrades and technology transitions with quality, safety, and long‑term impact in mind Ultimately, my work contributes to one goal: reducing fear of cancer by delivering dependable treatment solutions. WHAT DEFINES ME? I combine technical depth with a people‑centered leadership mindset. As a father of two daughters, responsibility, respect, and long‑term thinking shape how I lead and make decisions. I am known for staying calm in challenging situations, structuring complexity, and supporting others without removing accountability. I naturally step into roles where coordination, mediation, and orientation are needed – and I actively seek opportunities to grow into broader leadership responsibility.

Experience

  • Siemens Healthineers (Remote)
    • Sr. Project Manager
      Oct 2025 - Present · 9 mos

      Senior Project Manager responsible for leading complex, cross-functional initiatives in radiation oncology within an international environment. I take ownership for: • providing direction and structure in technically and organizationally complex projects • coordinating and aligning multidisciplinary teams across engineering, operations, clinical and service functions • enabling teams to take responsibility while maintaining clear accountability • proactively managing risks, dependencies, and stakeholder expectations • supporting decision-making through analysis, transparency, and clear communication Beyond delivery, I actively contribute to improving collaboration, standardization, and long-term sustainability of project execution.

    • Projektmanager
      Sep 2024 - Present · 1 yr 10 mos

  • Varian (Full-time · 5 yrs)
    • Development Engineer for Particle Therapy scanning systems
      Sep 2023 - Sep 2024 · 1 yr 1 mo

    • Field Service Engineer
      Oct 2019 - Sep 2023 · 4 yrs

  • Technischer Serviceingenieur at Shimadzu Deutschland GmbH
    Mar 2019 - Oct 2019 · 8 mos

  • Consultant at Thescon GmbH
    Jan 2018 - Mar 2019 · 1 yr 3 mos

  • Technischer Service-Ingenieur at Ass Field Services GmbH
    Jan 2016 - Jun 2016 · 6 mos