Crystal Growth Engineer, Sr

We are seeking a Senior Crystal Growth Engineer 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.Key ResponsibilitiesLead 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 QualificationsBachelor's, Master's, or PhD in Materials Science, Physics, Chemistry, Chemical Engineering, or related field5+ years of hands-on experience in single-crystal growth with significant oxide Czochralski experienceExperience supporting or leading crystal growth equipment design, selection, or procurementExperience creating engineering drawings and detailed work instructionsStrong understanding of CZ furnace subsystems and crystal growth fundamentalsExperience with crystal characterizationStrong analytical, documentation, and communication skillsPreferred QualificationsExperience growing oxide crystalsFamiliarity with RF induction heating systemsExperience scaling from R&D to pilot or production environmentsCAD experience (SolidWorks preferred)Vendor management or capital equipment sourcing experienceSafety RequirementsAll employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.Quality and Environmental ResponsibilitiesDepending 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 CommitmentEnsure adherence to company's values (ICARE) in all aspects of your position at Coherent Corp.:Integrity - Create an Environment of TrustCollaboration - Innovate Through the Sharing of IdeasAccountability - Own the Process and the OutcomeRespect - Recognize the Value in EveryoneEnthusiasm - Find a Sense of Purpose in WorkCoherent 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.