Sr. Principal Module Design Engineer

Coherent Corp. designs advanced fiber optic components and systems from its Fremont, California campus. The Senior Principal Module Design Engineer will own the design and development of fiber optic transceivers and CPO/NPO optical engine modules, guiding efforts from concept through production while coordinating across firmware, optical, mechanical, and process engineering teams.

Compensation

USD 127,875 - 223,813 per year

Responsibilities

• Design and develop fiber optic transceivers and CPO/NPO optical engines.
• Lead optical engine product design activities from initial concept through production.
• Co-design silicon photonics (PIC), electronics ICs (including TIA, drivers, and micro-controllers), substrates, optical connectors, and packaging to meet mechanical and thermal requirements.
• Perform analysis, modeling, simulation, and measurement of optical and electrical performance.
• Collaborate with firmware, optical, mechanical, and process engineering to deliver products that meet customer requirements.
• Apply in-depth electrical engineering insights to RF, power, noise, control, thermal, and EMI considerations.
• Prepare drawings, BOMs, and ECOs to document designs.
• Coordinate with program managers, buyers/planners, and suppliers to ensure parts availability for engineering and pilot builds.
• Resolve design-for-manufacturability issues raised by process/production engineering and component suppliers.
• Lead module design reviews across Architectural, EVT, and DVT phases.

Requirements

• Strong analog circuit design skills.
• Solid understanding of circuit theory, linear systems, feedback, ICs, and high-speed signaling.
• Proven laboratory measurement capabilities.
• Experience with the board-level design lifecycle.
• Proficiency with electronics CAD tools and electronic system modeling.
• RF design expertise using modeling tools such as CST or HFSS is a plus.
• Knowledge of microprocessors and real-time control firmware is a plus.
• Familiarity with fiber optic transceivers and CPO/NPO modules is a plus.

Technologies

• CST
• HFSS

Working Conditions

• On-site full-time position in Fremont, CA.
• Occasional off-site meetings or travel may be required.
• Regular use of a computer and office equipment.
• Frequent interaction with team members and external contacts.
• Occasional overtime and flexible hours to support project needs.

Physical Requirements

• Sitting for extended periods while using a computer or attending meetings.
• Use of hands and fingers for typing, writing, and handling documents.
• Occasional lifting of objects up to 20 pounds for administrative tasks.
• Ability to communicate effectively in writing and verbally.
• Mobility within the office environment to attend meetings and interact with colleagues.

Safety Requirements

All employees must complete scheduled safety training and follow site EHS procedures and Corporate EHS standards. PPE usage must align with job responsibilities. Managers ensure safety and environmental procedures are followed, with risk assessments, training, PPE availability, and ongoing compliance monitoring.

Quality and Environmental Responsibilities

Depending on location, the role may be responsible for implementing and maintaining ISO 9000, 9001, 14001 and other applicable standards within the Quality Management System and Environmental Management System.

Culture Commitment

The role supports Coherent Corp.’s ICARE values: Integrity, Collaboration, Accountability, Respect, and Enthusiasm. These guiding principles shape how the team operates and delivers engineering outcomes.