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About the Role
Last Energy is seeking a Thermal-Mechanical Engineer to design the pressure-boundary hardware in our micro nuclear power plant. This role involves translating thermal performance requirements into manufacturable components, working from initial calculations to detailed design and physical hardware.
Responsibilities
- Lead the conceptual design, analysis, and execution of critical thermal-mechanical components and systems for our advanced power plant.
- Drive mechanical design of components subject to thermal loading.
- Own the design of heat exchangers, piping networks, fluid storage tanks, and other pressure-boundary equipment, ensuring structural integrity, thermal performance, and design safety.
- Perform thermal and structural analyses to validate component designs against pressure, temperature, and cyclic loading requirements.
- Contribute directly to the mechanical design and optimization of critical thermal components, translating thermal performance requirements into manufacturable, deployable hardware.
- Collaborate daily with a multidisciplinary team to integrate thermal-mechanical solutions into cohesive, plant-level designs.
- Support material selection, tolerancing, and design-for-manufacturing decisions for components operating under high-temperature and high-pressure conditions.
- Operate autonomously, driving projects from concept to design verification in a startup culture.
Requirements
- BS or MS in Mechanical Engineering or related field.
- 7+ years of hands-on industry experience designing components under thermal and mechanical loading.
- Proven experience as a Mechanical, Thermal, or Design Engineer working on thermal systems components within power plant, nuclear, or complex industrial systems.
- Proficiency in 3D CAD software (e.g., Autodesk Inventor, SolidWorks, Siemens NX, PTC Creo) for mechanical design of thermal-mechanical components and assemblies.
- Proficiency in analysis software (e.g., ANSYS Mechanical, Abaqus, SolidWorks Simulation) for structural and thermal stress analysis.
- Solid working knowledge of heat transfer, thermodynamics, and mechanical design principles (fatigue, fracture, thermal expansion, pressure-boundary design).
- Experience with pressure vessel or piping design codes is a strong plus (ASME BPVC Section III/VIII, B31.1/B31.3).
- Practical, hands-on approach to problem-solving with a bias toward manufacturable, deployable designs.
- Excellent communication skills.
- Willingness to work collaboratively in a cross-functional, startup team environment.
Skills
- Mechanical Design
- Thermal Analysis
- Structural Analysis
- 3D CAD Software
- Analysis Software
- Heat Transfer
- Thermodynamics
- Pressure Vessel Design
- Piping Design
- Design for Manufacturing
Location
- US
Work Type
- Full-time
Experience Level
- 7+ years
Education Level
- BS or MS in Mechanical Engineering or related field
About the Company
- Last Energy is a pioneering US technology company focused on fleet-wide deployment and operation of next-generation nuclear assets.
- We are revolutionizing nuclear power delivery for rapid deployment and scalability.