Senior Integration Engineer - Nuclear Process
TLDR
Define process architecture for a first-of-a-kind fusion energy system, connecting plant systems through PFDs, interfaces, and tritium processing.
About Thea Energy:
Thea Energy is leveraging recent breakthroughs in stellarator physics and engineering to create a faster and simpler approach to commercializing fusion energy. The company is reinventing the stellarator using computer-controlled arrays of planar coils thereby replacing the intricate, complex modular magnets required in all other stellarator architectures. Thea Energy is on a mission to create a limitless source of zero emission energy for a sustainable future.
Position Overview:
We are looking for a Senior Integration Engineer - Nuclear Process to help define and integrate the process architecture of a first-of-a-kind fusion energy system. This role sits at the intersection of nuclear engineering, process engineering, and systems integration. You will develop process flows and system architecture connecting major plant systems, define system boundaries and interfaces, and work with engineering teams to translate the plant concept into an integrated, buildable system. The ideal candidate has strong process engineering fundamentals combined with nuclear systems experience, preferably in tritium processing and fusion fuel-cycle systems.
We are looking for a systems thinker who naturally asks how the process works as a complete system and what every neighboring system needs from it. You are comfortable working from incomplete information, identifying gaps, and bringing engineers from different disciplines together to resolve them.
Key Responsibility Areas:
Develop and maintain process flow diagrams (PFDs) and process architectures for nuclear and supporting plant systems.
• Develop system-level mass and energy balances and define major process streams and operating conditions.
• Establish system boundaries and identify, document, and manage interfaces between systems.
• Translate plant-level functions into system and subsystem requirements.
• Define process requirements for normal, startup, shutdown, maintenance, and abnormal operating modes.
• Integrate process systems including fuel-cycle/tritium processing, vacuum, cooling, heat transport, utilities, and other supporting systems.
• Work with mechanical, electrical, controls, nuclear, safety, and other engineering disciplines to resolve cross-functional technical issues.
• Support development of P&IDs, equipment specifications, process requirements, and interface control documentation.
• Identify process integration risks, dependencies, and opportunities for simplification.
• Participate in design reviews, FMEA/HAZOP activities, safety analyses, and technical risk assessments.
• Support control philosophies and operating strategies with controls and software engineers.
• Support system integration, commissioning, and operational readiness activities.
• Maintain configuration and technical consistency of process architecture as the design evolves.
Ideal Experience & Skillsets:
#LI-CB1
Company Benefits:
It’s not necessary to meet all of the skillsets outlined above. Please feel free to send us a note and tell us why you would still be a great fit for this role or Thea Energy.
Diversity and Inclusion:
Thea Energy is an equal opportunity employer committed to creating a company of diverse backgrounds. By creating a diverse environment, we will bring new ideas and approaches to solving some of the world’s hardest (and most important) problems. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, sexual orientation, gender identity or expression, national origin, family or marital status, age, disability, veteran’s status, or other characteristic protected by applicable laws and regulations.
Benefits
Health Insurance
Comprehensive health benefits (e.g. medical/dental/vision)
Paid Time Off
20 days PTO
Stock Options
Employee equity stock options
Thea Energy is pioneering advancements in stellarator physics to simplify the commercialization of fusion energy. By utilizing computer-controlled planar coils instead of complex traditional magnets, we aim to create a limitless source of zero-emission energy, driving the future of sustainable power.
- Founded
- Founded 2022
- Employees
- 51-200 employees
- Industry
- renewables & environment
- Funding stage
- Series B
- Total raised
- $20M raised
- Last funding
- Raised February 2026