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Silicon Photonics Test Engineer

Coherent Corp.
Fremont, CA Full Time
POSTED ON 9/30/2025
AVAILABLE BEFORE 10/12/2025
Job Description

As an optoelectronics testing engineer, you'll be responsible for characterizing and testing our next generation silicon photonics ICs, optical transceivers, and various optoelectronic subsystems. You will conduct verification and characterization of various active and passive optical and photonic components including but not limited to modulators, photodetectors, passive waveguides and couplers, multiplexers and de-multiplexers, and fiber-to-chip coupling. You will define test plan and develop test setup and procedures for optical device and modules.

Primary Duties & Responsibilities

  • Design, implement and maintain optical and electrical test setups
  • Design and implement test procedures for silicon photonics chips and SIP based optical subsystems
  • Design and implement test procedures for optical subassemblies including lasers, micro-optics, free-space optics, as well as associated electronic devices such as TIAs, laser/modulator drivers, and SerDes chips
  • Design and debug test methods and fixtures to characterize optical alignment systems
  • Establish and manage test data collection, archiving, analysis and presentation
  • Maintain and update documents related to operation of test systems
  • Responsible for providing design feedback to development engineering to improve device performance
  • Maintain test equipment and instrument calibration, identify and purchase test parts and write equipment preventive maintenance (PM) procedures

Education & Experience

  • A minimum of 5 years of industry experience preferred, or less experienced candidate with exceptional track record of related work
  • MS or equivalent degree in Electrical and Computer Engineering, Optics and Optical Engineering, Physics or related field

Skills

  • Hands on experience with optical chip, component and system-level prototyping and testing for Telecommunications or Data Center Interconnect (DCI) product development.
  • Working knowledge and experience with manufacturing support, such as optical component testing and performance evaluation.
  • Fluent in programming skills in a PC/Windows environment using C, Python to enable test scripting and automation
  • Data collection, analysis and reporting data analysis software such as JMP, Matlab, and MS Office.
  • Desirable experience with CAD/modeling/simulation software such as PADs, Solidworks, and Zemax
  • Self-motivated, creative, teamwork oriented

Working Conditions

  • Authorized to work in US
  • Onsite, Mon-Fri, normal business hours

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.

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Salary : $110,100 - $160,000

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