Cassie Wise Williams

About Cassie Wise Williams

I lead safety, regulatory strategy, and product compliance for complex energy systems—bringing together engineering, standards, and operational rigor to ensure high-reliability outcomes.My background spans hydrogen systems, nuclear propulsion, and global product certification. I currently serve as a Fellow in Product Compliance, where I lead certification strategy for PEM hydrogen systems across North America and Europe, including UL, CE, and other international approvals. My work sits at the intersection of electrical, pressure, and fluid systems, requiring system-level thinking and close collaboration with engineering, testing, and regulatory bodies.Prior to industry, I spent 12 years in the U.S. Navy’s nuclear propulsion program, where I led reactor mechanical operations and maintenance for a Nimitz-class aircraft carrier and served as Engineering Officer of the Watch. That experience shaped my approach to safety: disciplined, systems-oriented, and grounded in real-world operational risk.I am also actively involved in international standards development across ISO, IEC, ASME, CSA, and U.S. national committees, and was selected as an IEC Young Professional (2025). This work allows me to help shape emerging frameworks for hydrogen and energy systems, and to align product strategy with where regulations are going—not just where they are today.I’m particularly interested in leadership roles where I can scale technical judgment across organizations—whether as a Head of Safety & Regulatory, Chief Engineer, or VP-level leader—while staying closely connected to system-level engineering decisions in high-risk, high-impact environments.If you’re working on complex energy systems or scaling technologies where safety and compliance are mission-critical, I’m always open to connecting.

Experience

1. Fellow - Compliance

   Ohmium

   May 2025 — Present

   Lead global product safety, regulatory strategy, and certification execution for PEM hydrogen generation systems across North America and Europe. Serve as technical authority for compliance architecture spanning electrical, pressure, control, and hydrogen systems.Own end-to-end certification strategy and execution for UL, ETL, and CE marking of integrated hydrogen generation platforms, including system-level alignment with international safety and performance standards.Partner with engineering, design, and test organizations to ensure regulatory compliance is embedded in product architecture from concept through certification and deployment. Act as primary interface with global certification bodies including UL, Intertek (ETL), TÜV, and Bureau Veritas.Contribute to international standards development across ISO, IEC, ASME, CSA, and U.S. national committees, helping shape emerging regulatory frameworks for hydrogen systems. Selected as IEC Young Professional (2025), recognizing global leadership potential in standards and electrotechnical systems.Provide technical leadership on system-level risk assessments, component qualification, and certification strategy for safety-critical hydrogen technologies.

Education

• College of Charleston

  Bachelor of Science (B.S.), Physics