Mechanical Engineer, Reactor System Design

Position Overview

Company Overview: Kairos Power is a new nuclear energy technology and engineering company whose mission is to enable the world's transition to clean energy, ultimately improving quality of life while protecting the environment through the commercialization of the fluoride-salt-cooled, high-temperature reactor (FHR).

Job Summary: We are seeking a highly motivated Mechanical Engineer with expertise in mechanical design, 3-D modeling, stress analysis, and manufacturing of reactor systems hardware. You will contribute to engineering design and technology development programs for the FHR. Experience with codes and standards – specifically ASME BPVC – and familiarity with manufacturing processes such as machining, forming, and welding, are desirable.

Key Responsibilities

• Develop mechanical design information, including functional requirements for major FHR systems, structures, and components, and document design packages.
• Perform mechanical design tradeoff and optimization studies.
• Create and update CAD models for FHR systems, structures, and components.
• Generate engineering drawings with proper dimensioning and tolerancing.
• Conduct static and dynamic calculations using analytical methods and FEA to evaluate stresses from thermal, seismic, and primary loads.
• Ensure compliance with applicable codes and standards including ASME, ANSI, and ASTM.
• Apply solid mechanics principles, failure theories, and stress criteria for high-temperature applications.
• Develop feasibility studies, cost-benefit analyses, and optimization studies to support cost and design targets.
• Support manufacturing activities including DFM studies, evaluation of manufacturing plans, and review of inspection reports.
• Publish technical reports documenting calculations, analysis, design requirements, descriptions, and test results.
• Perform other duties as assigned.

Required Qualifications

• Bachelor's or Master's degree in Mechanical Engineering or a related field.
• 2+ years of experience in engineering design; experience in industries such as oil & gas, chemical, power, or nuclear is preferred.
• 2+ years of experience in CAD modeling and mechanical design.
• 2+ years of experience using analytical methods and FEA simulation for thermal and stress analysis is a plus.
• Experience with codes and standards, specifically ASME BPVC Section VIII; familiarity with Section III Division 5 is an advantage.
• Experience in the design and analysis of nuclear mechanical systems, such as reactor vessels and internals.
• Familiarity with heavy industry practices, ASME pressure vessel manufacturing, or direct experience in machine/welding shops.
• Deep knowledge of ASME Section VIII, Section IX, AWS, and nuclear welding standards.
• Excellent verbal and written communication, presentation, and interpersonal skills.
• Ability to work collaboratively, resolve problems efficiently, and prioritize safety.
• Proactive in collecting, managing, and transferring knowledge, and in creating process efficiencies.

Benefits & Perks

• Compensation: $106,300 to $125,100 for onsite employees based in Alameda, CA.
• Competitive compensation packages.
• Medical, dental, and vision benefits for employees and their dependents.
• Paid Vacation.
• 401(k) and pre-tax benefits including health insurance, dependent care, and commuter benefits (FSA).