Sr Crystal Growth Technician

II-VI UK, Ltd.; Mount Olive (NJ); On-site; USD 90,000 - 150,000; Full time

Job summary

Coherent Corp. in Budd Lake, NJ is seeking an experienced CZ crystal growth specialist to operate and optimize high-temperature oxide production systems. You will manage growth parameters, document results, and mentor junior technicians while upholding strict safety and quality standards.

The role requires hands-on experience with CZ growth, thermal management, and dependable documentation practices to ensure reliable, repeatable production and continuous improvement.

Qualifications

• Minimum eight years of experience in CZ crystal growth or high-temperature oxide manufacturing.
• Operate complex crystal growth systems in a production environment.
• Strong knowledge of thermal management, melt behavior, and process repeatability.
• Experience with controlled documentation, deviation management, and manufacturing discipline.
• Troubleshooting capability for crystal growth systems and infrastructure-related disruptions.
• Mechanical aptitude for hot zone assembly and equipment upkeep.
• Proficiency in data entry systems and Microsoft Office tools.
• Strong attention to detail, safety awareness, and process ownership mindset.

Responsibilities

• Prepare, verify, and document raw materials, dopants, seeds, and charge calculations per controlled procedures.
• Assemble and inspect hot zones to ensure mechanical integrity and thermal symmetry.
• Set up, operate, and monitor CZ growth systems for SGGG production; support additional oxide systems as needed.
• Maintain operational control of key growth parameters to ensure repeatable execution within defined process windows.
• Identify and respond to process drift, equipment instability, or infrastructure-related interruptions.
• Execute controlled heat-up, growth, and cooldown sequences to minimize thermal stress and yield loss.
• Perform in-process and post-growth evaluations in compliance with traceability and quality requirements.
• Accurately record process data, deviations, and observations in controlled documentation systems.
• Participate in root-cause investigations related to yield loss and equipment stability.
• Train and mentor junior technicians; review setups for procedural compliance.
• Maintain strict adherence to safety and high-temperature operating standards.

Skills

CZ crystal growth

crystal growth systems

thermal management

documentation

troubleshooting

hot zone assembly

data entry / MS Office

safety & process ownership

Education

Associate degree in Engineering Technology or Materials Science

Job description

• Prepare, verify, and document raw materials, dopants, seeds, and charge calculations per controlled procedures
• Assemble and inspect hot zones to ensure mechanical integrity and thermal symmetry
• Set up, operate, and monitor CZ growth systems for SGGG production; support additional oxide systems as needed
• Maintain operational control of key growth parameters to ensure repeatable execution within defined process windows
• Identify and respond to process drift, equipment instability, or infrastructure-related interruptions
• Execute controlled heat-up, growth, and cooldown sequences to minimize thermal stress and yield loss
• Perform in-process and post-growth evaluations in compliance with traceability and quality requirements
• Accurately record process data, deviations, and observations in controlled documentation systems
• Participate in root-cause investigations related to yield loss and equipment stability
• Train and mentor junior technicians; review setups for procedural compliance
• Maintain strict adherence to safety and high-temperature operating standards

Required Experience and Skills

• Minimum eight (5) years of experience in CZ crystal growth or high-temperature oxide manufacturing
• Proven ability to independently operate complex crystal growth systems in a production environment
• Strong knowledge of thermal management, melt behavior, and process repeatability
• Experience with controlled documentation, deviation management, and manufacturing discipline
• Demonstrated troubleshooting capability for crystal growth systems and infrastructure-related disruptions
• Mechanical aptitude for hot zone assembly and equipment upkeep
• Proficiency in data entry systems and Microsoft Office tools
• Strong attention to detail, safety awareness, and process ownership mindset

Desired Qualifications

• Associate degree in Engineering Technology, Materials Science, or related technical discipline
• Experience with SGGG and/or similar high-temperature oxide materials
• Experience supporting transition from development to standardized production
• Experience mentoring less-experienced technicians

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.

CultureCommitment

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.

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.

Job Info

• Job Identification 2013609
• Posting Date 07/22/2026, 04:52 PM
• Degree Level High School Graduate
• Job Schedule Full time
• Locations 200 International Drive, Budd Lake, NJ, 07828, US (On-site)