About the Company
Humanity faces two critical challenges: securing reliable energy for everyone and aggressively lowering our environmental impact. Our client believes nuclear fission is the key to solving both at once. Today they are actively developing the technology to rapidly scale the deployment of nuclear fission.
The Opportunity
As a structures engineer, you’ll be responsible for designing and building reactor hardware such as the pressure vessel, containment, and structural elements for a 25 MWe reactor. These designs must withstand the extreme temperature and pressure environments of the reactor while meeting regulatory requirements and being optimized for cost, mass, and manufacturability. Sr. Structures Engineers will own the most complex structural hardware while setting the technical bar for the structures engineering team. Successful candidates will have previously demonstrated extreme ownership in delivering mechanical systems in fast-paced, high-reliability environments.
Responsibilities
- Design, build and test pressure vessels, containment structures,



seismic isolation, and secondary structures for the pilot nuclear reactor
- Carry out trade studies for optimal structural materials, balancing cost, mass, strength, corrosion resistance, and manufacturability
- Validate reliability of designs with rigorous testing: thermal cycling, pressure cycling, shock, vibration, radiation embrittlement, and corrosion. Design experiments to ground analysis, develop fixturing, and create technical reports based on results
- Work with manufacturers to understand process limitations and adapt designs for lead times and manufacturability
- Collaborate with peers from different systems to develop designs that balance cost, efficiency, and deployment logistics
- Support the assembly of your hardware in the factory, witness your designs being brought to life daily, and watch them power an abundant, clean future
- Provide training and mentorship to junior structures engi

📌 Senior Mechanical Engineer, Structures (Pereira)
🏢 Adastra
📍 Pereira