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About the job

A NauWork client is seeking a Device Reliability Engineer, microLED to join their team. The position is on-site in Sunnyvale, California .

This venture-backed technology company is advancing a new generation of ultra-low-power, high-density optical interconnects for semiconductor and data-center applications. Founded by experienced leaders in optical networking, the organization is addressing one of the most pressing challenges in AI infrastructure: moving data between chips efficiently at enormous scale. Its microLED-based approach is designed to push beyond the bandwidth, reach, and power limitations of traditional copper and laser-based technologies. This is an opportunity to join a focused team working at the forefront of microLED and photonic device innovation.

The Device Reliability Engineer will own the reliability and qualification strategy for GaN microLED and photodetector devices used in a next-generation interconnect platform. This engineer will design accelerated stress tests, develop lifetime and degradation models, and establish qualification criteria for demanding data-center and AI-infrastructure lifetime targets. The role offers broad technical influence across device design, process development, packaging, and failure analysis. It is an opportunity to build foundational reliability capabilities while helping bring category-defining technology to market.

Responsibilities:

Reliability strategy: Define and own device-level reliability roadmaps, specifications, qualification test plans (QTP), and acceptance criteria for GaN microLEDs and photodetector arrays.

Accelerated testing: Design and execute accelerated life tests and stress conditions (temperature, current density, humidity, thermal cycling, ESD) and build the associated test hardware/methodology.

Lifetime modeling: Develop degradation and lifetime models (e.g., Arrhenius, acceleration factors, Weibull/lognormal statistics) and project field lifetime from accelerated data.

Failure-mode analysis: Identify and characterize wear-out and degradation mechanisms; partner with Failure Analysis to root-cause reliability fallout and validate fixes.

Qualification: Drive device qualification against internal and industry standards (e.g., JEDEC/Telcordia-style methodologies) and prepare qualification reports for internal and customer use.

Cross-functional influence: Feed reliability learnings back into device design, process, and packaging to improve robustness and margin; contribute to DfR (Design for Reliability) reviews.

Required Experience:

Education: MS or PhD in Electrical Engineering, Materials Science, Physics, or a related field (or BS with equivalent industry experience).

Experience: 5-8+ years in device or product reliability engineering for semiconductor or optoelectronic devices.

Reliability methods: Strong command of accelerated life testing, statistical lifetime modeling, and acceleration-factor/failure-rate analysis.

Standards: Familiarity with reliability qualification standards and methodologies (JEDEC, Telcordia, or equivalent).

Physics of failure: Solid understanding of degradation and wear-out mechanisms in semiconductor/optoelectronic devices.

Analysis skills: Proficiency in statistical analysis and scripting (e.g., Python, MATLAB, JMP) and clear technical reporting.

Applicants must be authorized to work in the United States.

Preferred Experience:

GaN microLEDs: Prior experience with GaN-based microLED or LED/laser reliability is strongly preferred but not required.

Experience qualifying high-density emitter or detector arrays.

Familiarity with packaging, hybrid-bonding, and heterogeneous-integration reliability.

Experience defining reliability requirements for data-center, optical-module, or high-reliability applications.

Track record building reliability test infrastructure from the ground up in a startup or early-product environment.

To Learn More:

503-388-9585

833-NAU-WORK

careers.nauwork.com

Category: Engineering Position: Device Reliability Engineer, microLED Location: On-Site — Sunnyvale, California Job Type: Direct-Hire, Full-Time