Principal Mechanical Engineer

Category: Engineer

Employment Type: Direct Hire

Reference:  BH-387935

Yoh Life Sciences  is hiring for a Principal Mechanical Engineer  with extensive experience in technical program management to lead the transfer of a complex, large-scale mechanical system to a contract manufacturer (CM). In this role you will drive all technical aspects of the transfer, ensure the seamless release of engineering documentation, and act as the primary liaison between internal engineering, operations, and external manufacturing partners.  This will be a hand-on role with responsibilities in mechanical design, ensuring design integrity and manufacturability throughout the transfer process.

The ideal candidate will have 15+ years of experience in mechanical engineering with a proven track record of managing cross-functional technical programs, BOM releases, and CM transfers in a fast-paced product development and manufacturing environment.

Location:  San Francisco
Title:  Principal Mechanical Engineer
Duration:  Permanent FTE

Responsibilities: 

  • Own the overall technical execution of the transfer, coordinating across engineering, manufacturing, supply chain, and quality teams
  • Own and contribute to the mechanical design of system components and assemblies, ensuring performance, reliability, and manufacturability
  • Review and update CAD models and drawings as needed to support the transfer and production ramp
  • Collaborate with cross-functional teams to resolve design issues and implement improvements based on feedback from testing and manufacturing
  • Prepare, review, and release Bills of Materials (BOMs) and engineering drawings in accordance with company standards
  • Drive the creation and processing of Engineering Change Orders (ECOs) to support product updates and CM readiness
  • Define and implement test methods and inspection criteria at the CM to ensure product quality and reliability
  • Establish and track build schedules, milestones, and shipment timelines at the CM
  • Provide on-site or remote technical support to CM during prototype, pre-production, and production builds
  • Serve as the primary technical liaison between internal teams and external partners (including the CM)
  • Interface with internal disciplines (electrical, systems, quality, supply chain, etc.) to ensure product requirements and design intent are preserved
Requirements:
  • Bachelor’s degree in Mechanical Engineering or a combination of technical education and experience 
  • 15+ years of hands-on experience in Mechanical engineering with significant exposure to product development, manufacturing, and CM transfer
  • Proven experience managing the technical aspects of system-level builds and CM onboarding  
  • Strong experience in CAD, PLM systems, BOM management, and ECO processes  
  • Hands-on experience developing and implementing test methods
  • Ability to operate autonomously in a dynamic, cross-functional environment
  • Previous experience working with domestic and international CM’s is highly desirable
#IND-SPG

Estimated Min Rate: $230000.00
Estimated Max Rate: $240000.00


What’s In It for You?
We welcome you to be a part of the largest and legendary global staffing companies to meet your career aspirations. Yoh’s network of client companies has been employing professionals like you for over 65 years in the U.S., UK and Canada. Join Yoh’s extensive talent community that will provide you with access to Yoh’s vast network of opportunities and gain access to this exclusive opportunity available to you. Benefit eligibility is in accordance with applicable laws and client requirements. Benefits include:

  • Medical, Prescription, Dental & Vision Benefits (for employees working 20+ hours per week)
  • Health Savings Account (HSA) (for employees working 20+ hours per week)
  • Life & Disability Insurance (for employees working 20+ hours per week)
  • MetLife Voluntary Benefits
  • Employee Assistance Program (EAP)
  • 401K Retirement Savings Plan
  • Direct Deposit & weekly epayroll
  • Referral Bonus Programs
  • Certification and training opportunities

Note: Any pay ranges displayed are estimations. Actual pay is determined by an applicant's experience, technical expertise, and other qualifications as listed in the job description. All qualified applicants are welcome to apply.

Yoh, a Day & Zimmermann company, is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Visit https://www.yoh.com/applicants-with-disabilities to contact us if you are an individual with a disability and require accommodation in the application process.

For California applicants, qualified applicants with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. All of the material job duties described in this posting are job duties for which a criminal history may have a direct, adverse, and negative relationship potentially resulting in the withdrawal of a conditional offer of employment.


Posted on 08-13-2025

Principal Mechanical Engineer

Engineer

Direct Hire

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