Senior Optical Test Engineer

Mixx Technologies•San Jose, CA

82d•$120,000 - $150,000

About The Position

Mixx Technologies is seeking an Optical Test Engineer to develop and validate silicon photonics and optical interconnect designs. The role focuses on hands-on testing of high-density optical systems, including precision alignment at micron and sub-micron scales. The engineer will build automated test environments and design custom fixtures to validate next-generation AI infrastructure and ensure high performance.

Requirements

B.S. or M.S. in Optical Engineering, Physics, Mechanical Engineering, or a related technical discipline.
At least 5 years of relevant experience in an optical laboratory environment, specifically involving precision alignment and fiber connectivity.
Ability to design test fixtures and hardware setups for advanced optical characterization.
Strong programming skills for test automation and data analysis, such as Python.
Deep understanding of optical physics, including coupling efficiency, polarization, and loss mechanisms in silicon photonics or fiber systems.
Experience in a fast-paced R&D environment and ability to manage multiple priorities while delivering high-quality data.

Nice To Haves

Proficiency in Zemax OpticStudio for optical design, modeling, and stray light analysis.
Familiarity with silicon photonics and 2.5D/3D packaging architectures.
Experience with optical-thermal interactions or electro-optical co-simulation.
Excellent communication skills and ability to translate complex experimental findings into actionable design recommendations.

Responsibilities

Execute laboratory testing for optical components and systems, with a focus on micron- and sub-micron-scale alignment.
Design and develop custom fixturing and mechanical supports for complex test setups to ensure stability and repeatability.
Develop automation scripts, such as Python scripts, to control laboratory equipment, automate data collection, and streamline testing workflows.
Collaborate with packaging and electrical engineers and other cross-functional teams to validate optical performance in operational conditions.
Analyze and present test data, correlating experimental results with design simulations to drive iterative improvements.
Maintain and calibrate high-precision optical test equipment, including light sources, power meters, and alignment stages.