Principal Transceiver Engineer
Coherent
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Fremont, CA · Posted October 9, 2026
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November 2026
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- #17Best cities for pay after cost of living in California$152k · of 32
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About the job
Primary Duties & Responsibilities
Shared responsibility for design and development of fiber optic transceivers. This includes analysis, modeling, simulation, and measurement of optical and electrical performance.
Part of a multi-disciplinary engineering team working on optical transceiver products from conception to volume manufacturing readiness.
Work closely with firmware, optical, mechanical, and process engineers to design/develop transceiver products per customer requirements.
Must be hands-on in every step of design process including conceptual and detailed design, prototype build and verification, and final design selection.
Create drawings, BOMS and ECO to document design. Interact with program manager, buyer/planner, suppliers to make sure designed parts are available in timely manner for engineering and pilot build.
Perform transceiver design reviews for Architectural, EVT, DVT phase reviews.
Education & Experience
B.S. degree required (M.S. preferred, Ph.D. a plus) in electrical engineering
At least 5 years of relevant work experience
Skills & Other Requirements
Strong analog circuit design skills required
In-depth understanding/intuition of RF/microwave, power, noise, control, thermal and EMI.
Strong understanding of circuit theory, linear system theory, feedback, ICs, and high-speed fundamentals required
Strong laboratory measurement skills required
Experience with board level design cycle
Expertise in RF/microwave design using modeling tools such as CST or HFSS a plus
Experience with electronics CAD tools and electronic system modelling
Understanding of microprocessors and real time control firmware a plus
Familiarity with electro-optic devices such as EMLs, CW lasers and Silicon Photonics a plus
Working Conditions
This position is on site.
May require occasional off-site meetings or travel
Regular use of a computer and other office equipment is necessary
Interaction with team members and external contacts is a regular part of the job
May require occasional overtime and flexibility in work hours
Physical Requirements
Sitting for extended periods while working on a computer or conducting meetings.
Use of hands and fingers for typing, writing, and handling documents.
Occasional lifting of objects or materials up to 20 pounds for lab or administrative tasks.
Ability to communicate verbally and in writing.
Mobility within the office environment to attend meetings or interact with colleagues.
Safety Requirements
All employees are required to attend scheduled training, follow the site EHS procedures and Corporate EHS standards. This includes the use of proper protective equipment (PPE) as required by the job responsibilities.
Managers will ensure that all safety and environmental procedures are followed consistently. They will ensure that risk assessments are performed, proper training, work instructions, required PPE is available, and will monitor compliance.
Quality & 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:
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
Collaborate with a multidisciplinary engineering team to design and develop fiber optic transceivers.
Analyze, model, simulate, and measure optical and electrical performance, ensuring product quality and reliability.
Work closely with firmware, optical, mechanical, and process engineering teams to align product development with customer requirements.
Apply in-depth understanding and intuition of electrical engineering solutions to address RF, power, noise, control, thermal, and EMI challenges.
Create detailed drawings, BOMs, and ECOs to document the design, ensuring accurate and timely communication with internal and external stakeholders.
Interact with program managers, buyers/planners, and suppliers to ensure the timely availability of designed parts for engineering and pilot builds.
Resolve all DFMs (Design for Manufacturability) issues raised by process/production engineering and component suppliers, ensuring smooth manufacturing processes.
Conduct transceiver design reviews for architectural, EVT (Engineering Verification Test), and DVT (Design Verification Test) phases, ensuring design integrity and compliance with standards.
Stay updated with the latest industry trends and technologies in optical transceivers, contributing to the continuous improvement of our products.
Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a related field.
Minimum 3 years of experience in electrical engineering, with a focus on RF, power, noise, control, thermal, and EMI.
Strong understanding of optical transceiver technologies and their applications.
Proficiency in optical and electrical performance analysis, modeling, and simulation tools.
Experience in creating detailed drawings, BOMs, and ECOs for product documentation.
Excellent communication and collaboration skills, with the ability to work effectively in a multidisciplinary team.
Ability to work independently and manage multiple projects simultaneously.
Strong problem-solving and analytical skills, with a proactive approach to resolving technical challenges.
Familiarity with industry standards and regulations related to optical transceivers.
Willingness to learn and adapt to new technologies and industry trends.
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.