Senior Optical Engine Validation Engineer

Responsibilities: Own optical engine bring-up, testing, and validation, including validation plans, EVT/DVT/PVT test matrices, entry and exit criteria, and readiness reviews Lead integrated package and module bring-up for each new revision — power sequencing, thermal behavior, management interface, and first light — with firmware, packaging, and board teams Characterize the host-side electrical interface at high-speed PAM4 rates against IEEE 802.3 requirements: eye diagrams, jitter decomposition, SNDR, and COM Characterize the optical interface against IEEE 802.3 optical requirements: TDECQ, extinction ratio, OMA, launch power, wavelength, sensitivity, stressed receiver sensitivity, and overload Perform end-to-end electro-optic link testing over the specified reach, and build BER and Q-factor methodology including extrapolation to very low error rates Characterize performance across temperature, supply, and process corners, and validate equalization and link adaptation behavior under stress conditions Perform interoperability testing with host platforms and third-party modules and test equipment Drive failures to root cause across electrical, optical, thermal, firmware, and test-setup causes, separating component, silicon, package, and board issues Collaborate with design, packaging, and reliability teams on trade-offs and specification adjustments that balance performance, manufacturability, and schedule Support new product introduction by transferring test methods and limits to manufacturing test Build and automate test stations so characterization runs are repeatable, versioned, and trustworthy months later Author customer-facing characterization reports and compliance evidence, and mentor engineers and technicians

Qualifications: Bachelor's degree in Electrical Engineering, Optical Engineering, Physics, or a related field with 8+ years of experience in optical transceiver, module, or high-speed link validation; MS preferred Transceiver hardware design background — you have designed, or worked shoulder to shoulder with the designers of, optical module hardware Hands-on experience with BERTs, sampling and real-time oscilloscopes, DCAs, OSAs, and optical power and attenuation equipment Deep knowledge of PAM4 signal quality metrics, including TDECQ, SRS, jitter and noise decomposition, and BER analysis Fluency in IEEE 802.3 electrical and optical specifications and how compliance is demonstrated Proven ownership of a validation program through DVT and PVT on a product that shipped Strong Python skills for test automation and data analysis, with a working knowledge of statistical methods and process control Strong ownership mindset with the ability to work in ambiguous and dynamic environments Preferred Qualifications Silicon photonics or co-packaged optics experience Knowledge of FEC and validating against post-FEC BER targets; familiarity with CMIS and module management interfaces Experience with WDM link characterization Experience taking optical modules through NPI into volume production Reliability exposure: HTOL, accelerated aging, and Telcordia GR-468 Compensation includes a base salary of $150,000–$250,000 and equity in CScale. Final offers depend on experience, market conditions and location.