Lead Mechanical Design Engineer — High-Vacuum Seals & Systems

Pacific Fusion; Fremont (CA); On-site; USD 138,000 - 207,000; Full time

Benefits offered by this job

Equity plan

6% employer 401k matching

Generous paid time off

Medical, Dental, and Vision insurance

Job summary

Pacific Fusion is seeking a Senior Vacuum Seal Engineer to advance the design and integration of complex sealing systems for vacuum environments. You will lead experiments, validate test plans, and guide cross-functional teams across internal groups, vendors, and partners.

The role emphasizes FMEA, tolerance analysis, and reliable seal integration, with mentoring responsibilities and close collaboration with the external suppliers. Base compensation reflects high-demand expertise.

Qualifications

• Bachelor's or Master's in Mechanical/Aerospace or related field.
• 5+ years in mechanical design focused on vacuum seals in various vacuum environments.
• Strong CAD, FEM, and engineering analysis tool proficiency.
• Expertise in tolerance analysis, FMEA, seal design, and mechanical integration.

Responsibilities

• Design and analyze large, high-performance vacuum seals for various transitions.
• Lead experimental design and testing with internal teams, vendors, and academic partners.
• Conduct research into novel sealing techniques; define and execute test campaigns.
• Perform FMEA and tolerance stack-up analyses to ensure seal reliability and safety.
• Design test assemblies and risk-reduction.
• Review and present technical work across multidisciplinary teams; support system-level discussions.
• Provide subject-matter expertise in sealing strategies and guide system integration.
• Document sealing processes, validation data, and lessons learned.
• Mentor and support junior engineers on design challenges.
• Interact with suppliers of vacuum systems components for purchasing.

Skills

Vacuum seals design

CAD

FEM

Engineering analysis tools

Tolerance analysis

FMEA

Mechanical integration

Education

Mechanical/Aerospace degree

Tools

CAD software

FEM software

Engineering analysis tools

Job description

Pacific Fusion is seeking a Senior Vacuum Seal Engineer to advance the design and integration of complex sealing systems for vacuum environments. You will lead experiments, validate test plans, and guide cross-functional teams across internal groups, vendors, and partners.

The role emphasizes FMEA, tolerance analysis, and reliable seal integration, with mentoring responsibilities and close collaboration with the external suppliers. Base compensation reflects high-demand expertise.