Job Description

Responsibilities

• Lead end-to-end laser chip design activities, owning device architecture, epitaxial structure definition, grating design, and performance optimization from concept to release
• Drive innovation in advanced semiconductor laser design through simulation, modeling, and data-driven optimization
• Oversee experimental validation in close collaboration with engineering and manufacturing teams to ensure scalable, manufacturable, and robust designs
• Lead structured root-cause analysis and failure investigations, implementing corrective actions to improve device performance, yield, and reliability
• Conduct electro-optical characterization and reliability assessment to ensure product quality, robustness, and sustained performance

Skills & Qualifications

• PhD in Physics, Optics, or Electrical Engineering, or a Master’s degree with 3+ years of relevant industry experience in semiconductor laser development
• Deep expertise in semiconductor laser physics and InP-based laser diode design, including epitaxial structure definition, optical mode engineering, and grating design
• Strong understanding of semiconductor manufacturing processes, design for manufacturability, yield optimization, and process integration, with hands-on experience in electro-optical characterization and reliability assessment
• Proficiency in advanced simulation and modeling tools (e.g., optical, electrical, thermal), statistical analysis software, and programming for data evaluation and automation
• Demonstrated ability to lead projects and drive cross-functional collaboration, with strong problem-solving skills and structured root-cause analysis capability
• Excellent English communication skills (German beneficial)

Working Conditions

• Full-time employment

Safety Requirements

• All employees are required to follow the site EHS procedures.

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:

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

We offer

• A dynamic, international environment
• An appreciative and collegial corporate culture
• Unique technical challenges focused on the products of tomorrow
• Above-average social benefits

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.