[Remote] Prinicipal Piping Mechanical Engineer

Note: The job is a remote job and is open to candidates in USA. Deep Fission is a nuclear technology company pioneering the development of a revolutionary deep borehole pressurized water reactor. The Piping Mechanical Engineer will ensure the structural integrity and safety of nuclear reactor components through advanced modeling and simulation, contributing to reactor design validation and regulatory compliance.ResponsibilitiesPerform various analyses including stress, fatigue, buckling, seismic, and vibration of piping systems, pressure vessels, heat exchangers and structural supports using classical tools like Mathcad and finite element analysis (FEA) software like ANSYSConduct stress, fatigue, fracture mechanics, creep, and buckling analyses in accordance with ASME Boiler and Pressure Vessel Code (BPVC) Section VIII or III and other applicable codes and standardsPerform thermal-hydraulic and coupled multiphysics simulations to evaluate component behavior under normal operating, transient, and accident conditionsSupport reactor design efforts by providing analytical justification for material selection, geometry optimization, and design modificationsPrepare detailed analysis reports, calculation packages, and technical documentation suitable for internal design reviews and regulatory submittalsCollaborate with multidisciplinary teams including nuclear engineers, structural engineers, CAD designers, and licensing specialists to integrate FEA results into overall design packagesDevelop and maintain analysis procedures, quality assurance documentation, and verification/validation (V&V) protocols for FEA software tools and methodologiesMentor junior engineers and contribute to the development of the team’s FEA capabilities and best practicesSkillsBachelor's or Master's degree in Mechanical Engineering, Structural Engineering, or a closely related engineering disciplineMinimum of 5–8 years of professional experience performing piping design and analysis in an engineering environment, with at least 2 years in the nuclear, power generation, aerospace, or similarly regulated industryAdvanced proficiency in one or more FEA software platforms such as ANSYSAdvanced proficiency in one or more piping analysis software platforms such as AutoPIPEStrong working knowledge of ASME BPVC Section III or Section VIII for nuclear component design and analysisStrong working knowledge of ASME B31.1 and B31.3 for piping design and analysisKnowledge of the design, selection, and application of pipe supporting elementsWorking knowledge of commercially available piping products and their applicationStrong understanding of material properties and behavior under high-temperature, irradiation, and corrosive environments relevant to nuclear applicationsExcellent technical writing skills with the ability to produce clear, well-organized analysis reports and calculation packagesEffective communication and collaboration skills for working across multidisciplinary engineering teamsMust be a U.S. citizen or authorized to work in the United StatesDirect experience with nuclear piping, pressure vessels, heat exchangers, support structures, or primary system componentsExperience with seismic analysis (response spectrum, time-history) for nuclear safety-related structures, systems, and components (SSCs)Experience with computational fluid dynamics (CFD) tools for coupled thermal-hydraulic/structural analysesKnowledge of probabilistic fracture mechanics and risk-informed analysis methodsExperience developing automated analysis workflows using Python, APDL, or equivalent scripting languagesFamiliarity with nuclear quality assurance programs (NQA-1) and configuration management practicesCompany OverviewDeep Fission is transforming the energy landscape by installing modular nuclear power reactors a mile deep. It was founded in 2023, and is headquartered in Berkeley, California, USA, with a workforce of 51-200 employees. Its website is https://deepfission.com.