Digital Twin Principal Engineer, Lead

Digital Twin Principal Engineer, Lead —
Terra Power
, Bellevue, WA, USA

Terra Power is a nuclear technology company based in Bellevue, Washington. At its core, the company is working to raise living standards globally through a more affordable, secure and environmentally friendly form of nuclear energy along with innovations in medical isotopes to improve human health. In 2006, Terra Power originated with Bill Gates and a group of like-minded visionaries who evaluated the fundamental challenges to raising living standards around the world.

They recognized energy access was crucial to the health and economic well‑being of communities and decided that the private sector needed to take action and create energy sources that would advance global energy deployment. Terra Power’s mission is to be a world leader in new nuclear technologies, while developing innovators and future leaders in the nuclear field.

Terra Power is seeking to hire highly motivated and forward‑thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes.

We are seeking a Digital Twin Principal Engineer / Technical Lead to design and build the foundational architecture for our Digital Twin initiative, enabling next‑generation insights across reactor design, construction, and operations. This role is responsible for translating the digital twin strategy into technical execution — establishing system architecture, leading technical development, and building the early prototypes that will define the program’s technical direction.

You will lead the hands‑on design and integration of high‑fidelity simulation, engineering, and operational data into a cohesive digital twin ecosystem. The role requires deep technical expertise, strong systems thinking, and the ability to guide both internal teams and external partners in developing validated, scalable digital solutions for advanced nuclear systems.

Reporting directly to the Director of Digital Products and AI, you’ll be part of a small, mission‑driven team building foundational digital systems that will define how advanced nuclear reactors are designed, built, and operated. As one of the first technical leaders on the Digital Twin initiative, you will directly influence architecture, standards, and long‑term technical direction—working alongside industry‑leading engineers and partners in AI, HPC, and simulation.

• Technical Leadership
  • Define and uphold the technical vision and architecture for the Digital Twin program, spanning data infrastructure, model integration, simulation, and analytics layers.
  • Establish software standards, interfaces, and design principles to ensure modularity, scalability, and traceability across the digital twin ecosystem.
  • Serve as the technical authority and hands‑on lead engineer, ensuring that development activities align with the strategic direction set by the Director of Digital Products & AI.
  • Translate digital twin strategy into actionable technical roadmaps, milestones, and design decisions.
  • Collaborate across Engineering, IT, Operations, and Supply Chain teams to ensure seamless integration with enterprise systems and data environments.
• Hands‑On Engineering
  • Prototype and deliver core digital twin components integrating simulation data (e.g., thermal‑hydraulics, neutronics), IoT and sensor data, and AI/ML‑driven predictive models.
  • Develop APIs, data schemas, and pipelines connecting simulation tools with enterprise and visualization platforms.
  • Implement secure, compliant, and validated software workflows in accordance with SQA and NQA‑1 standards.
  • Benchmark and optimize performance for high‑fidelity and high‑performance computing (HPC) applications.
• Collaboration & Mentorship
  • Mentor engineers and data scientists to establish strong technical foundations and development best practices.
  • Contribute to hiring and onboarding technical staff as the digital twin program scales.
  • Provide technical guidance to vendor and research partners to ensure integration quality and alignment with internal…