Demo

Principal Mechanical Engineer

II-VI Aerospace & Defense
Fremont, CA Full Time
POSTED ON 1/14/2026
AVAILABLE BEFORE 2/12/2026
Job Description

Primary Duties & Responsibilities

  • Responsible for CPO/XPO/liquid cooling
  • Lead and manage CPO/XPO/Liquid cooling

Education & Experience

  • B.S. or M.S. in Mechanical Engineering.
  • 5 years of mechanical design experience.
  • Knowledge of a variety of (metal) manufacturing methods, e.g. machining, stamping, molding, welding, brazing, casting, plating, 3D printing, etc.
  • Knowledge and experience in sheet metal fabrication and rack and chassis designs
  • Strong analytical and computational skills in structural, heat transfer, fluid dynamics, and tolerance studies for mechanical and thermal consideration.
  • Experience in semiconductor laser diodes, laser alignment, diode laser packaging, fiber optics, fiber coupled lasers, fiber lasers, and diode laser optics.
  • Able to multitask between several projects and designs and handle a lot of details.
  • Must be self-motivated with the ability to work effectively in a team environment and meet project deadlines.

Skills

  • Leadership capabilities to command design decision.
  • Strong interpersonal, teaming, and problem-solving skills.
  • Work effectively with other members of Coherent engineering
  • Strong collaborative and communications skills are required for interactions with customers, with the design, process, and manufacturing teams.
  • Strong analytical problem-solving skills for product design and debug

Working Conditions

  • This position is on-site
  • May require occasional off-site meetings or travel
  • Regular use of a computer and other office equipment is necessary
  • Interaction with team members and external contacts is a regular part of the job
  • May require occasional overtime and flexibility in work hours to accommodate the executive’s needs

Physical Requirements

  • Sitting for extended periods while working on a computer or conducting meetings.
  • Use of hands and fingers for typing, writing, and handling documents.
  • Occasional lifting of objects or materials up to 20 pounds for administrative tasks.
  • Ability to communicate verbally and in writing.
  • Mobility within the office environment to attend meetings or interact with colleagues.

Safety Requirements

All employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.

Quality And Environmental Responsibilities

Depending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System.

Culture Commitment

Ensure adherence to company’s values (ICARE) in all aspects of your position at Coherent Corp.:

Integrity – Create an Environment of Trust

Collaboration – Innovate Through the Sharing of Ideas

Accountability – Own the Process and the Outcome

Respect – Recognize the Value in Everyone

Enthusiasm – Find a Sense of Purpose in Work

Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

If you need assistance or an accommodation due to a disability, you may contact us at talentacquisition@coherent.com .

About Us

Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us!

Note to recruiters and employment agencies: We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and have required assistance, in writing, for a specific opening.

About The Team

II-VI Aerospace & Defense is a high technology company, offering careers in offices and campuses in California, Colorado, Florida, Pennsylvania, and Ohio. We work with emerging technology in areas of atmospheric sensing and imaging, adaptive optics, optical communications, coherent beam combining, and numerical performance analysis of atmospheric optics systems. II-VI A&D has recently been awarded several new government contracts and we are offering opportunities to leverage your technical experience and interpersonal skills for something more than a simple paycheck. If this sounds like the type of environment you are seeking at this point in your career, and if your background meets these qualifications, please apply. We will offer a competitive salary and benefits. Since II-VI A&D is a rapidly expanding organization, it means that significant opportunities exists for career advancement and professional development.

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Salary : $114,375 - $195,875

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