Senior Engineer, Reactor Vessel

Kairos Power

Alameda, Canada

Full Time

Posted July 9, 2026

$141k - $165k

Nuclear Energy

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Listing evidence and provenance

Source: greenhouse View original listing
Freshness: Open in the current public read path; this is not an employer guarantee.Last observed September 29, 2026
Classification: Modern power-system classification not yet published for this listing.Legacy source industry field: Nuclear Energy
Pay provenance: Employer-provided pay

Job Description

The Reactor Vessel System team is seeking a highly motivated Senior Engineer to join the growing Reactor Systems department.

Key Responsibilities

Own and manage design scope for reactor vessel components, interfaces, and hardware packages.
Develop and maintain reactor vessel requirements, design bases, interface definitions, verification plans, and supporting technical documentation.
Lead the mechanical design and technical execution of assigned reactor vessel structures, components, and interfaces, ensuring compliance with system requirements and design objectives.
Coordinate with mechanical, civil, I&C, safety analysis, manufacturing, and plant integration teams to define spatial, thermal, structural, and functional interfaces.
Lead or support design integration reviews to ensure reactor vessel and interfacing SSC designs are compatible, constructible, inspectable, and maintainable.
Prepare and review mechanical engineering documentation and perform or guide supporting analyses, including drawings, design reports, test plans, memos, specifications, calculations, technical reports, thermal and structural analyses, pressure-boundary evaluations, FMEAs, and other mechanical design assessments.
Assess reactor vessel compliance with applicable codes and standards such as ASME, ANSI, ASTM, ASME Boiler and Pressure Vessel Code, and other relevant standards.
Engage with manufacturing, assembly, suppliers, and operations teams to support reactor vessel fabrication, inspection, installation, testing, and maintenance, including review of fabrication drawings, manufacturing processes, inspection plans, material certifications, and nonconformance dispositions.
Maintain assigned design records in accordance with configuration management, document control, and technical change control processes.
Lead technical interactions with suppliers for assigned reactor vessel components, including specification development, technical evaluations, manufacturing support, acceptance criteria, and resolution of technical issues.
Develop technical estimates, identify technical risks, and provide engineering input supporting project planning, cost, schedule, and execution decisions.-
Provide independent engineering recommendations and technical decision support within assigned design scope, identifying risks, assumptions, and recommended mitigation strategies.
Participate in peer design reviews, technical audits, hazard and failure analyses, and design readiness reviews to ensure compliance with quality and performance objectives.
Provide technical mentorship, design guidance, and engineering coaching to junior engineers and interns while promoting engineering rigor and best practices.
Other duties as assigned.

Requirements

Bachelor’s or advanced degree in Mechanical Engineering, Nuclear Engineering, Materials Engineering, Structural Engineering, or a related discipline is required.
8+ years of relevant experience in mechanical design, nuclear component design, pressure vessel design, high-temperature systems, structural components, or complex hardware development is required.
Demonstrated experience independently leading design, analysis, fabrication support, testing, or qualification of pressure vessels, reactor vessels, or other safety-significant mechanical systems is required.
Experience developing and reviewing engineering documentation, including mechanical drawings, specifications, calculations, design reports, test plans, and technical reports is required.
Experience with reactor component fabrication and lifecycle management processes, including equipment qualification, inspection, testing, maintenance, or related programs, consistent with qualifications in the provided examples is desired.
Experience working to a quality standard such as ASME NQA-1, ISO 9001, or equivalent quality program requirements is desired.
Familiarity with applicable codes and standards such as ASME Boiler and Pressure Vessel Code Section VIII, Section III, ANSI, ASTM, ASME Y14.5, or related standards is desired.
Experience with design for manufacturing, design for assembly, dimensional inspection, GD&T, welding, machining, or fabrication of large metallic components is desired.
Occasionally requires schedule flexibility.
Occasionally requires extended hours to support critical project timelines, fabrication activities, testing, or deployment milestones.
The salary range for this position is $140,600 to $165,400 for employees working onsite at our Alameda, CA headquarters. The range provided in this job posting represents the typical range or starting rate of candidates hired in California. Factors that maybe used to determine your actual salary may include your education, experience, knowledge, skills, ability and the market data for your work location, and a comparison to other employees already in the role.
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Benefits & Perks

We know that we have some of the most talented and dedicated employees, and we believe in rewarding them accordingly. If you work here, full-time employees (excludes interns) expect to have access to the benefits below:
Competitive compensation packages
Medical, dental and vision benefits for employees and their dependents
Paid Vacation
401(k) and pre-tax health insurance, dependent care, and commuter benefits (FSA)
Candidates only, no recruiters or agencies please.
Note: You are applying for a position that is located in a facility that handles information that is subject to export control restrictions by the Department of Energy under 10 CFR Part 810. To work in this facility, you need to be authorized by the Department of Energy to access Part 810-controlled information. Foreign nationals who are citizens of countries that are not on the Department of Energy’s general authorization list (link below) are not permitted to work in our facility unless the Department of Energy issues an export control license to the company to permit that individual to have access to Part 810-controlled information. The following questions are intended to determine the licensing requirements that may apply. https://www.law.cornell.edu/cfr/text/10/appendix-A_to_part_810