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Intern- Process Engineer

Company:
II-VI Aerospace & Defense
Location:
Fremont, CA, 94537
Posted:
March 20, 2026
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Description:

Job Summary

We are seeking a motivated Summer Intern to support the Process Engineering team in the area of plasma etching for semiconductor device fabrication. The intern will assist engineers in developing, monitoring, and optimizing Reactive Ion Etch (RIE) and Inductively Coupled Plasma (ICP) etch processes used in the fabrication of laser and photodiode (PD) devices in a cleanroom environment.

This internship offers hands-on experience with semiconductor plasma processes, data analysis, and process characterization..

Primary Duties & Responsibilities

Assist process engineers with RIE and ICP plasma etch processes used in compound semiconductor device fabrication

Collect and analyze process data including etch rate, uniformity, selectivity, and profile characteristics

Support process monitoring and statistical analysis to track process stability and repeatability

Assist with process characterization experiments and design-of-experiment (DOE) activities

Review and organize metrology data such as etch depth, sidewall profile, and critical dimension measurements

Document experimental results, process changes, and engineering reports

Participate in cleanroom wafer processing activities under supervision

Contribute to process optimization and yield improvement efforts Education & Experience

Currently pursuing a Bachelor's or Master's degree in Electrical Engineering, Materials Science, Chemical Engineering, Physics, or a related field

Basic understanding of semiconductor fabrication processes including vacuum technology

Familiarity with plasma etching concepts or microfabrication

Strong analytical and problem-solving skills

Experience with data analysis using Excel or similar tools

Ability to work in a semiconductor cleanroom environment Skills & Other Requirements

Excellent written and verbal communication.

Team-oriented but able to work independently when needed.

Adaptable and eager to learn in a fast-paced environment.

Attention to detail and time management.

Coursework or lab experience involving plasma physics, microfabrication, or semiconductor processing

Basic knowledge of RIE or ICP plasma etch systems

Familiarity with thin film materials used in compound semiconductor devices

Experience with statistical data analysis tools (e.g., JMP, Python, MATLAB)

Interest in laser or photodiode device fabrication

Ability to work in a cleanroom environment wearing appropriate cleanroom garments

Ability to stand for extended periods and follow safety protocols

Internship Duration: 10 - 14 weeks.

At Coherent, interns are valued members of our team and have the opportunity to make meaningful contributions from day one. In addition to hands-on project experience, our internship program includes opportunities to connect with fellow interns and colleagues across the organization through virtual and in-person networking events, team-building activities and more. Interns are expected to actively participate in these events as part of their professional development and to fully immerse themselves in our collaborative and innovative culture. 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.

[Add more if necessary]

Safety Requirements

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

Quality & 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 .

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 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.

Apply