Mechanical Engineer - Thermal and Structural Analysis

Inertia; Livermore (CA); On-site; USD 125,000 - 225,000; Full time

Benefits offered by this job

Medical, Dental, Vision plans

Company-paid holidays

401k matching

Job summary

Inertia Enterprises seeks a Senior Mechanical Engineer to lead fusion engine design and analysis, supporting critical components of our integrated fusion power plant at Livermore, CA. You will drive CAD design, 3D modeling, and thermal-structural analyses under challenging x-ray, neutron, and thermal conditions.

The role requires 7+ years in mechanical design and analysis, expertise in FEA (AN SYS / Abaqus), and strong CAD skills, with collaboration across engineering disciplines.

Qualifications

• 7+ years of mechanical design and analysis experience.
• Experience with structural materials and high-temperature services.
• Familiarity with ASME boiler and pressure vessel codes is a plus.
• Proven ability to lead design reviews and cross-functional teams.

Responsibilities

• Lead design and analysis of fusion engine components and structures.
• Develop 3D CAD models of chamber, first wall, blanket, piping.
• Perform thermal-structural analyses for steady-state and transients.
• Evaluate irradiation effects and material models in analyses.
• Mentor other engineers and participate in design reviews.

Skills

Mechanical design

Finite element analysis

Programming (C++, Fortran, Python)

PDE discretization

Education

Bachelor’s or advanced degree in Mechanical, Aerospace, Materials, Nuclear, Structural or related engineering

Tools

ANSYS

Abaqus

CAD

Job description

Senior Mechanical Engineer - Fusion Engine Design and Analysis

Location

Livermore

Employment Type

Full time

Location Type

On-site

Department

Design and Engineering

Overview

Inertia Enterprises is developing the technologies to build the world’s first fusion energy power plant. At our 48,000 sq.ft. facility in Livermore, CA, we are seeking a Senior Mechanical Engineer - Fusion Engine Design and Analysis to lead analysis and support the mechanical design of critical components and structures of Inertia’s integrated fusion power plant.

This role will lead the design and analysis of components and structures, including the first wall and breeding blanket structures, that must survive the harshest conditions known to engineering— intense x-ray and neutron flux, high temperatures, extreme thermal gradients, corrosion, among others.

What You'll Get to Do

Develop the mechanical design and 3D modeling of the fusion engine key systems, structures and components: chamber, first wall, blanket, vacuum chamber, piping.

Lead mechanical design and thermal-structural analysis of key components such as the engine first wall and tritium breeding blanket, in steady-state and transient conditions. Optimize structures for heat removal, thermo-mechanical longevity, manufacturability.

Evaluate the effects of cyclic heat flux, creep loading, fatigue loading on chamber components using relevant models, codes and standards to predict the operational lifespan of the fusion core. Account for effects of irradiation (displacement per atom and helium) in thermal mechanical analyses.

Conducts thermal and structural analyses and parametric studies to validate and optimize materials choices and mechanical designs, capturing insights and results in technical documentation and reports

Actively participates in design reviews and risk matrix development, helping to identify technical gaps, track open action items, and incorporate feedback from various stakeholders into the design.

Support and mentor other mechanical engineers, designers, and analysts working on other company priorities such as high power laser design, fusion target design. .

What You Bring to Inertia

Bachelor’s or advanced degree in Mechanical, Aerospace, Materials, Nuclear, Structural or a related engineering discipline.

7+ years of experience in mechanical design and analysis of structural materials in chemical, power generation, oil & gas, nuclear, defense, or aerospace industries.

Expert-level skills in mechanical design and computer-aided design (CAD)

Expertise in finite element analysis using codes such as ANSYS or Abaqus applied for stress and thermal analysis

Knowledge of FEA and other spatial/time discretization techniques for partial differential equation (PDE) systems.

Familiarity with application of numerical material models to metallic systems, structures and components

Experience with alloys and metals, high temperatures, high heat fluxes, and/or irradiation effects on materials

Bonus Points

Experience with power plant design

Experience in/knowledge of Computational Materials Science or Mechanics preferred

Experience developing scientific codes and softwares using C++, Fortran, python or similar programming language

Experience with fusion or nuclear technologies

Working knowledge of ASME Boiler and Pressure Vessel Codes, with specific interest in high-temperature service rules.

Salary & Benefits:

The base salary range for this role is $125,000 - $225,000; The pay range provided is an estimated base range for this role. Exact compensation may vary based on skills, experience, and education.

We offer market-competitive compensation and an excellent benefits program, including Medical, Dental, and Vision plans, company-paid holidays, matching 401k, and more!

About Inertia:

Inertia is taking the most direct, scientifically-proven path to commercializing fusion, leveraging the only successful achievement of fusion ignition, using a process that was pioneered at the U.S. Department of Energy’s (DOE) Lawrence Livermore National Laboratory (LLNL). With groundbreaking innovation, transformative technology, and multi-year investment, Inertia is committed to commercializing fusion energy in the next decade.

This position requires access to technology, software and other information that is subject to governmental access control restrictions, due to export controls, security classification and/or designation as Controlled Unclassified Information. Employment in this position is conditioned on the candidate’s eligibility for, obtaining and maintaining appropriate government authorization to access technology or information, to the extent required, including without limitation a security clearance, export license, or other documentation required to establish authorization to receive access to such items technology or information.