[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Coherent jobs](https://jobs.opennash.com/companies/coherent/) · [Search jobs](/search/) Coherent · Fremont, CA # Senior Principal Optical Integration Engineer Fremont, CA, United States On-site Senior individual contributor Operations Listed on Coherent’s official careers site. Posted August 18, 2026. Check that it is still open and apply there. [Apply on Coherent’s careers site →](https://hcwp.fa.us2.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/2014180) [OpenNash Jobs](https://jobs.opennash.com/) / [Coherent](https://jobs.opennash.com/companies/coherent/) / Senior Principal Optical Integration Engineer ## Job description ### Primary Duties & Responsibilities Drive Co-Packaged Optics and Optical Engine product packaging activities from initial concept to production. Develop Silicon Photonic (PIC) and electronics IC (EIC) co-design process flow, PIC and EIC IO pad frame and 3D interposer floor plan. Lead PIC and EIC interconnect schematic and monitor layout design process. Work with OSAT’s to define PIC and EIC hybrid integration packaging design rules, process flow, and material sets. Lead optical package development to establish package manufacturability and reliability. Collaborate with cross-functional teams consisting of laser packaging, Silicon Photonics, IC design, substrate layout, and module design teams. ### Education & Experience MS/PhD in an engineering or science discipline plus 5+ years of relevant experience Experience with semiconductor laser design and silicon photonics. Experience with CPO, optical transceivers or components desirable. Experience with New Product Introduction (NPI) and/or Product Lifecycle Management processes Experience of managing cross-functional teams successfully, interacting with a broad range of functions, skills, cultures, and personalities. Skills & Other Requirements Previous experience as an engineer in laser and silicon photonics R&D. In-depth understanding of all aspects of Silicon Photonics. Familiarity of high speed modulation in Silicon photonics including MZM, MRM, EAM at 200G and 400G. Strong problem solving, critical thinking, and risk management skills. Strong communication, planning, and organizational skills. Highly self-motivated with a strong multi-disciplinary background is essential. Working Conditions This position is on-site full time. 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 to accommodate the executive’s needs 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 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 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. ## At a glance - Posted by the employer: Aug 18, 2026 - First seen by OpenNash: Oct 11, 2026 - Last checked: Oct 18, 2026 - Listed for: 61 days - Location: Fremont, CA, United States - Work arrangement: On-site[Apply on Coherent’s careers site →](https://hcwp.fa.us2.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/2014180) ## More jobs at Coherent ### [Lead Epi Engineer](https://jobs.opennash.com/companies/coherent/jobs/18d6a439aecb15c4501d/) Fremont, CA, United States ### [Member of Technical Staff - Switch Systems Test Engineer](https://jobs.opennash.com/companies/coherent/jobs/5eaae9e7525e82660f3c/) Fremont, CA, United States ### [Operations Supervisor](https://jobs.opennash.com/companies/coherent/jobs/8af03cec83f11988e433/) Fremont, CA, United States ### [Optical Transceiver Engineer](https://jobs.opennash.com/companies/coherent/jobs/ad9a743ff97172564262/) Fremont, CA, United States ### [Principal Silicon Photonics Test Engineer](https://jobs.opennash.com/companies/coherent/jobs/318bd29183e81d47d8d0/) Fremont, CA, United States ## Similar jobs at other companies ### [Senior Principal Engineer—Sensor and Optical Systems](https://jobs.opennash.com/companies/bae-systems/jobs/0415015f0033256236b3/) BAE Systems · Westminster, Colorado, United States ### [Principal Optical Network System Engineer](https://jobs.opennash.com/companies/microsoft/jobs/d59a58678c4da20637fb/) Microsoft · United States, California, Mountain View, Washington, Redmond, Oregon, Hillsboro ### [Senior Principal Systems Engineer - Integration & Test Lead](https://jobs.opennash.com/companies/bae-systems/jobs/d39ed849c9fa84c7ee6b/) BAE Systems · Hudson, New Hampshire, United States ### [Principal Optical Engineer](https://jobs.opennash.com/companies/microsoft/jobs/48b913c25b2cd8e096f7/) Microsoft · United States, California, Mountain View, Washington, Redmond, Texas, Austin, North Carolina, Raleigh, Oregon, Hillsboro ### [Principal Electro-Optical Integration & Test Engineer](https://jobs.opennash.com/companies/rtx/jobs/3e5a749a0fac351f70a8/) RTX · TUCSON, AZ, US OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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