Senior Test Engineer Jobs in Fremont, CA

INTRODUCTION

As the Lead Test Development Engineer, you will lead all aspects of test engineering, work with contract manufacturers, for our high-power CW lasers and their packages. This position demands a hands-on approach to product performance characterization, yield optimization, and production troubleshooting. Your expertise will guide the seamless integration of new products into existing systems and ensure our continued leadership in the market.

ROLE AND RESPONSIBILITIES

Primary Duties & Responsibilities

Test Engineering Leadership: Develop new test infrastructure including device-level and package-level test, characterization and burn-in systems for high-power CW lasers, high speed PD, and/or co-packaged optics, ensuring optimal performance and yield.

Manufacturing Collaboration: Work closely with manufacturing teams and Fremont product engineering and logistic team to address needs and optimize performance with contract manufacturers.

Cross-Functional Teamwork: Collaborate with Fremont Product Engineers, Design, Planning, Logistic team to ensure good quality product on time delivery on schedule.

Data Analysis: Utilize statistical methods to analyze reliability and test data, identifying trends and potential issues to improve product yield and quality; Perform statistical process control and gauge R&R for tester qualification and maintenance.

Team Management: Lead and potentially manage multidisciplinary teams, promoting a culture of innovation and collaborative success.

EDUCATION & EXPERIENCE

• A Master’s degree or higher in Electrical Engineering, Applied Physics, Optics, Materials Science, or related field.
• At minimum 7 years of industrial experience in engineering development, preferably with a focus on semiconductor lasers or related optoelectronic devices such as photodiodes, semiconductor lasers and other devices with InP based materials. Direct hands-on experience in semiconductor chip or module testing and instrumentation is highly desired.

SKILLS

• Solid background and experience in semiconductor laser testing and instrumentation.
• Proficient in data analysis and statistical evaluation related to test engineering.
• Exceptional leadership and interpersonal skills, capable of managing complex projects and diverse teams.
• Strong problem-solving skills with a proactive approach to addressing and preempting issues.
• Willingness to travel frequently to manufacturing sites.
• Excellent communication skills, essential for effective teamwork and cross-disciplinary collaboration.

WORKING CONDITIONS

• This role will be based on-site in Fremont, CA.
• Regular use of a computer and other office equipment is necessary.

Physical Requirements

• Sitting for extended periods while working on a computer or in 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.

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!

JOB INFO

Job Identification
2013128

Posting Date
06/26/2026, 12:05 PM

Degree Level
Master's Degree

Job Schedule
Full time

Locations
41762 Christy Street, Fremont, CA, 94538, US
(On-site)

Pay Scale
$100,625 - $172,250 per year

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.