Silicon Test Engineer

The Role

As a Silicon Test Engineer , you will be responsible for developing and executing test solutions for Lumilens’ silicon photonics and semiconductor products. You will work across characterization, wafer sort, and final test to ensure robust coverage, high product quality, and efficient manufacturing at scale.

This is a hands-on role focused on building and optimizing test infrastructure, working closely with design, product, and operations teams to enable successful product ramps and ongoing production performance.

What You’ll Do

Test Development & Execution

Develop and implement silicon test solutions from characterization through wafer sort and final test

Create and maintain ATE test programs on platforms such as Advantest 93K and/or Teradyne

Translate design and DFT requirements into scalable, production-ready test solutions

Support new product introduction (NPI) and ensure smooth transition into high-volume manufacturing

Test Optimization & Yield Improvement

Optimize test flows to improve coverage, reduce test time, and lower cost of test

Analyze yield and test data to identify trends and drive continuous improvement

Debug test failures and identify root causes across product, test, and process

Strengthen screening coverage to ensure only high-quality devices ship to customers

Cross-Functional Collaboration

Partner closely with design, product, and process engineering teams to ensure testability is built in early

Support test plan reviews and collaborate on coverage, performance, and reliability requirements

Work with operations teams to ensure test readiness for production ramps

Test Infrastructure & Hardware

Contribute to development of high-speed test hardware and interfaces for photonics devices

Ensure test solutions meet performance requirements for high-speed and mixed-signal applications

Support improvements in test methodologies as product complexity increases

What We’re Looking For

8–12+ years of experience in semiconductor or silicon photonics test engineering

Strong experience with ATE platforms such as Advantest 93K and/or Teradyne

Background in silicon validation, production test, DFT/DFM, and high-speed or mixed-signal testing

Experience optimizing test time, coverage, yield, and cost in a manufacturing environment

Proficiency in scripting/programming (C/C++, Python, or similar) and Linux-based environments

Strong analytical and problem-solving skills, with an ability to work through complex technical challenges

Comfortable working cross-functionally in a fast-paced, evolving environment

What We Offer

Competitive compensation commensurate with experience

Comprehensive health benefits

Exposure to cutting-edge photonics technology and advanced manufacturing environments

Opportunity to work closely with cross-functional teams across engineering, product, and operations

A collaborative environment where individual contributors can make a direct and measurable impact

Lumilens is an equal opportunity employer. All qualified applicants will receive consideration without regard to race, color, religion, gender, identity, orientation, veteran status, disability, or any other legally protected status.