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About the job

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

This venture-backed technology company is advancing ultra-low-power, high-density optical interconnect technology for AI infrastructure, high-performance computing, and next-generation data centers. Founded by experienced optical networking technologists, the organization is pioneering the use of microLEDs for high-speed communications. Its approach is designed to overcome the bandwidth, reach, and power limitations of conventional copper and laser-based solutions. This is an opportunity to join a focused, highly technical team working at the forefront of semiconductor and photonic innovation.

The Device Engineer will drive the design, fabrication, electro-optical characterization, and qualification of GaN microLED devices. This role will translate device physics into manufacturable, high-yield emitters that meet ambitious goals for efficiency, speed, and array uniformity. The engineer will work across the full development stack, from epitaxy and process integration through on-wafer testing. The position offers significant ownership and close collaboration with experts across process, packaging, test, and systems engineering.

Responsibilities:

Develop and optimize GaN-based microLED device structures, including epitaxial layer stacks, active regions, and contact schemes, using TCAD and analytical models to meet efficiency, bandwidth, current-density, and reliability targets.

Define and refine process flows in collaboration with process integration and foundry partners; own device-level design-of-experiments from wafer to characterization.

Design and execute L-I-V, spectral, modulation-bandwidth, and reliability-relevant measurements on single devices and large arrays; correlate results to design and process parameters.

Diagnose loss mechanisms, including non-radiative recombination, sidewall effects, and current crowding, and drive design and process changes to improve wall-plug efficiency and high-speed performance.

Partner with epitaxy, process, packaging, test, and systems teams to align device performance with link-level and product requirements.

Establish device specifications, test plans, and technical reports; contribute to IP generation and internal design reviews.

Required Experience:

MS or PhD in Electrical Engineering, Applied Physics, Materials Science, Photonics, or a related field, or a BS with equivalent industry experience.

5–8+ years of hands-on experience in semiconductor optoelectronic or LED/laser device engineering.

Strong grasp of compound-semiconductor device physics, including carrier transport, recombination, and optical emission.

Proven expertise in electro-optical device characterization and data analysis, including L-I-V, spectral, and high-speed/modulation measurements.

Working knowledge of semiconductor fabrication processes, including lithography, etch, deposition, and metallization, and their impact on device performance.

Proficiency with data analysis and scripting tools, such as Python or MATLAB, and TCAD or equivalent device simulation.

Applicants must be authorized to work in the United States.

Preferred Experience:

Prior hands-on experience with GaN-based microLED devices is strongly preferred but not required.

High-speed/high-bandwidth LED or VCSEL device experience for optical interconnect or display applications.

Experience with large-area or high-density emitter arrays and array-level uniformity/yield.

Familiarity with heterogeneous integration or hybrid bonding to CMOS.

Track record of patents or peer-reviewed publications in optoelectronic devices.

To Learn More:

503-388-9585

833-NAU-WORK

careers.nauwork.com

Category: Engineering Position: Device Engineer, microLED Location: Sunnyvale, California (On-site) Job Type: Direct-Hire, Full-Time