We are seeking a Senior Crystal Growth Engineer in our Port Richey Florida location, with strong experience in oxide crystal growth using the Czochralski technique to lead the development, optimization, and scale-up of crystal growth processes and equipment. This role combines deep process expertise with leadership in the design, specification, documentation, and sourcing of new crystal growth equipment, supporting both development and production needs.

Primary Duties & Responsibilities

Key Responsibilities

Lead the crystal growth process development.

Develop and optimize growth recipes including melt chemistry, thermal gradients, motion control, atmosphere control, and diameter control.

Drive continuous improvement in crystal quality, yield, and reproducibility.

Provide technical leadership in the design, specification, and procurement of new crystal growth equipment.

Define raw material specifications (purity, morphology, trace impurities) and acceptance criteria.

Create and maintain engineering drawings, layouts, and tooling designs for CZ furnaces, hot zones, and related hardware.

Author, review, and maintain work instructions, SOPs, and process documentation.

Define equipment requirements, performance specifications, and acceptance criteria.

Collaborate with vendors on the design and customization of furnaces, power supplies, and hot zone components.

Support installation, commissioning, and qualification of new crystal growth systems.

Apply working knowledge of RF heating systems and alternative heating approaches appropriate for oxide CZ growth.

Troubleshoot complex growth and equipment-related issues.

Perform and interpret crystal characterization.

Ensure compliance with safety, quality, and manufacturing requirements.

Required Qualifications

Bachelor’s, Master’s, or PhD in Materials Science, Physics, Chemistry, Chemical Engineering, or related field

7+ years of hands-on experience in single-crystal growth with significant oxide Czochralski experience

Experience supporting or leading crystal growth equipment design, selection, or procurement

Experience creating engineering drawings and detailed work instructions

Strong understanding of CZ furnace subsystems and crystal growth fundamentals

Experience with crystal characterization

Strong analytical, documentation, and communication skills

Preferred Qualifications

Experience growing oxide crystals

Familiarity with RF induction heating systems

Experience scaling from R&D to pilot or production environments

CAD experience (SolidWorks preferred)

Vendor management or capital equipment sourcing experience

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.:

I ntegrity – Create an Environment of Trust

C ollaboration – Innovate Through the Sharing of Ideas

A ccountability – Own the Process and the Outcome

R espect – Recognize the Value in Everyone

E nthusiasm – 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 .

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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.