Coherent Optical Systems Architect

Infinera Corp.

San Jose, CA

Infinera is the global supplier of innovative networking solutions. Our customers include the leading service providers, data center operators, internet content providers (ICPs), cable operators, enterprises, and government agencies worldwide, including 9 of the top 10 Tier 1 service providers and 6 of the top 7 ICPs. We design, develop and deliver hardware and software for fiber-based connectivity solutions that span access, aggregation, metro, long haul, and submarine network. Our industry-leading, trendsetting edge-to-core solutions provide the foundation for many of the world’s largest and most demanding networks that generate billions in service revenue for our customers.

Infinera is seeking a Coherent Optical System Architect to join our Advanced Optical Systems Group (OSG). The engineer will work on the design, characterization, and subsequent integration of 400G and 800G coherent pluggables based on Infinera's next-generation coherent photonic integrated circuits (PICs) and FlexCoherent DSP ASICs. The ideal candidate should be prepared to work with early prototype PICs, analog ASICs, and control systems to further the development of short term and long-term enabling technologies.

Your Key Responsibilities Would Include:

  • Performance characterization of coherent pluggable transceivers, which will include detailed experimental validation of the constituent sub-components that comprise the pluggable, such as the analog, control, and DSP ASICs.

  • Optical integration of coherent transceivers

  • Development of calibration algorithms to maximize system level performance.

  • Perform numerical analysis of coherent transceiver to project system performance.

  • Be part of cross functional product development teams involving software, electronics, optics and test.

Education & Experience Necessary For Success:

  • PhD. in Electrical Engineering or Applied Physics with minimum of 3 years of industrial experience in optical communications, photonics, high speed electronics or systems.

  • Fundamental understanding of optical communication systems, DWDM transmission systems, photonic integrated components, electronic (integrated) circuits, and signal analysis and processing.

  • Hands-on experience working with system-level optical communication hardware and components.

  • Extensive understanding of coherent communications systems, including experience with higher order modulation formats.

  • Experience characterizing high-speed RF and mm-wave interconnects, amplifiers, and components.

  • Characterization of RF/mm-wave systems, such as S-parameter measurements, jitter measurements, and ADC/DAC performance and ENOB

  • Hands-on experience with high-speed optical and electrical test, and measurement equipment control and data acquisition.

  • Programming experience in MATLAB, Python,, or C desired.

**Please note that Infinera has adopted a mandatory COVID-19 vaccination policy to safeguard the health and well-being of our employees.

As a condition of employment, our US employees are required to be fully vaccinated for COVID-19, unless a reasonable accommodation for a medical/disability or religious basis is approved or as otherwise required by law. Candidates are not required to and must not furnish proof of vaccination or request an accommodation during the application process. Candidates will be required to do so only after a job offer has been extended and prior to their start date if they accept the job offer. A person is fully vaccinated against COVID-19 if the person has received one dose of the Johnson & Johnson COVID-19 vaccine or two doses of the Pfizer or Moderna vaccine and two weeks have passed since receiving the final dose of the vaccine.


Infinera is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. Infinera complies with all applicable state and local laws governing nondiscrimination in employment.