Principal Engineer, Manufacturing Test Platform

Lumilens

Building diagnostics and manufacturing software for photonics products in the data center. Collaborating with engineering disciplines from conception to production stage.

Posted 4/12/2026full-timeSan Jose • California • 🇺🇸 United StatesLeadWebsite

Tech Stack

Tools & technologies

Python

About the role

Key responsibilities & impact

Design, implement & test manufacturing tests to validate mass production of photonics products for the data center.
Design and implement high-level software abstractions for low-level hardware.
Develop reusable test scripts and modules to validate firmware behavior, execute regression suites, support new product introduction (NPI) testing and hardware bring-up.
Isolate and perform root-cause analysis of reported failures
Monitor, collect, and analyze data to identify and address issues, and propose solutions to enhance system reliability and efficiency.
Integrate with databases or dashboards for test result visualization and analytics
Analyze Factory processes, systems, and workflows to identify areas for improvement and optimization.
Collaborate with vendors and partners to evaluate, select, and implement new factory systems or software/firmware upgrades.

Requirements

What you’ll need

Bachelor’s degree in Electrical Engineering, Computer Engineering, or related field
10+ years of experience across embedded software development, software testing and test automation.
Prior experience with optical transceiver validation, CMIS protocol, or related hardware.
Strong proficiency in C# or Python.
Ability to read and understand schematic diagrams
Prefer experience with test automation frameworks like PyVISA, and exposure to test-equipment such as bit error rate testers, digital communication analyzers, laser sources, power meters and optical spectrum analyzers.

Benefits

Comp & perks

Competitive salary commensurate with experience
Comprehensive benefits package including health insurance
Professional development opportunities and certification support
Access to cutting-edge technology and cloud platforms
Collaborative work environment with cross-functional teams

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

embedded software developmentsoftware testingtest automationC#Pythonroot-cause analysistest scriptsregression suitesfirmware validationschematic diagram interpretation

Soft Skills

collaborationproblem-solvingdata analysiscommunicationorganizational skills

Certifications

Bachelor’s degree in Electrical EngineeringBachelor’s degree in Computer Engineering