Lead Silicon Photonics Design Engineer
Coherent
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Horsham, PA · Posted July 21, 2026
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November 2026
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- #17Best cities for AI-skill jobs in the Northeast11% · of 70
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AI use among engineers, all other is little observed so far. Measured exposure for engineers, all other: 7% (little observed).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
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About the job
Primary Duties & Responsibilities
Work on silicon photonics device design, simulation, and layout
Run a variety of optical simulation tools, including Lumerical and Rsoft
Run a variety of RF simulation tools, including HFSS, ADS, and CST
Run a variety of CAD tools, including Cadence, Synopsis, and Python design environments
Tape out silicon photonics design in external and internal fabs
Work with module developers to design the optical subassemblies
Work with foundries to define and optimize the device structures and processes
Work with test engineering teams to perform characterization of silicon photonics devices
Work with quality engineers to create test and qualification plans
Education & Experience
PhD degree in Electrical and Computer Engineering, Optics and Optical Engineering, Physics, or related field
2 years of industrial experience in design and optimization of silicon/III-V photonic devices and photonic integrated circuits
Skills
Strong experience on RF/SI simulation and optimization, from components such as high-speed modulators/PDs, and subsystems including PCB/TIA/driver/optical components, to transceiver systems
Strong experience in photonic integrated circuits design CAD tools
Strong tapeout experience with photonics foundries
5 years of experience in testing and characterization of optoelectronic devices and modules
Excellent experience of design/optimization of high-speed opto-electronic devices (modulators, photodetectors, lasers)
Good knowledge of high-speed analog circuitry (TIA, modulator drivers)
In-depth understanding of optical transceiver modules
Good knowledge of fiber optic and/or wireless communication systems and applications
Good knowledge of module packaging in optical communications
Good knowledge of digital electronics circuitry (microprocessors, FPGAs, SPI)
Good knowledge of digital signal processing
Excellent verbal and written communication skills
Excellent teamwork skills and strong independence
Self-motivated with innovative thinking
Working Conditions
Authorized to work in US
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 .
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.