Senior Systems Integration Engineer — MBSE, HIL & Interfaces

Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy.

We are rapidly designing and building a pulser-driven inertial fusion system to achieve net facility gain (more fusion energy output than stored energy input). In parallel, we are developing the key components required to build affordable fusion systems.

Our plans are ambitious. We have raised over $900M so far from incredible investors, resourcing us to deliver on these plans. We are bringing together the best scientists, engineers, and operators from the fusion community, hard tech industry, and other sectors. We are united by a shared sense of urgency to provide clean power for the world, particularly managing climate change while meeting growing global energy demand.

You can read more about us in this letter from our founders.

Pacific Fusion is seeking an exceptional Senior Systems Engineer to join our dynamic team and create the path to commercial fusion energy. Based in San Leandro, CA, Pacific is pioneering the development of state-of-the-art pulsed magnetic inertial fusion energy systems. In this role, you will bridge the gap between plasma physics and mechanical/electrical engineering during our prototyping and pilot plant design phase.

You will lead the integration, modeling, and validation of complex subsystems, ensuring that our ambitious physics goals are translated into robust and reliable hardware. This position calls for technical rigor, visionary problem-solving, and the ability to thrive in a "deep tech" environment.

• Own the flow-down of top-level physics goals into detailed engineering requirements for subsystems like pulsed power and diagnostics.
• Author Interface Control Documents (ICDs): Ensure seamless physical and functional integration across multidisciplinary teams by managing technical interfaces.
• Execute Risk Mitigation: Lead systematic risk assessments, including Failure Mode and Effects Analysis (FMEA), to identify and mitigate technical risks early.
• Integrated Modeling: Develop models and simulations to predict system-level performance and guide critical design trade-offs.
• Testing and Validation: Oversee hardware-in-the-loop (HIL) testing and system-level commissioning.
• Multidisciplinary Coordination: Collaborate closely with mechanical, software, and manufacturing engineers to integrate system-level designs.
• Technical Documentation: Oversee the generation of comprehensive design documentation and specifications.

• Bachelor’s Degree in Systems, Mechanical, or Electrical Engineering required. A Master’s Degree or PhD is preferred.
• Minimum of 8+ years of experience in systems engineering for complex, regulated hardware (Aerospace, Nuclear, or Med Tech).
• Proficiency in Model-Based Systems Engineering (MBSE) tools and methodologies, including SysML or MATLAB/Simulink.
• Proven record of managing technical interfaces for high-pedigree systems (e.g., high-voltage power or vacuum systems).
• Superior problem-solving skills with meticulous attention to detail.
• Exceptional written and verbal communication skills, especially in translating complex scientific concepts for engineering teams.

Pay Range: $175,900 - $263,800 USD

• Equity plan
• 6% employer 401k matching
• Generous paid time off (including sick leave, vacation, paid family leave)
• Medical, Dental, and Vision insurance

Actual base salary offered will be determined by: experience, skills, and work location. This range is for base salary, our total compensation includes equity and benefits. We welcome you to apply even if your expectations are outside our listed range.

Pacific Fusion is committed to creating a diverse environment and is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Pacific Fusion is committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures and throughout employment. If you need assistance or any accommodation, please let us know.

Pacific Fusion does not accept unsolicited resumes from recruiters or employment agencies without a fully executed recruitment agreement in place. In the absence of such agreement, Pacific Fusion reserves the right to pursue and hire any candidates without an obligation to pay fees. Agencies are requested not to contact Pacific Fusion hiring managers or employees regarding recruiting services.