ABOUT LUMILENS
At Lumilens we are building the critical photonics infrastructure that powers tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is unlocking a new era of computing - faster, cooler, and massively more efficient.
We’re a well-funded startup backed by Mayfield and led by veterans who’ve built and scaled some of the most transformative technologies in the industry. At Lumilens, we’re developing high-speed photonics products purpose-built to power the future of AI infrastructure and high-performance computing.
This isn’t incremental innovation, it’s a ground-floor opportunity to rethink the optical layer from the silicon up. You’ll work alongside a team of world-class engineers solving some of the hardest challenges in scaling optical systems. Every line of code, every design decision, every breakthrough you help deliver will shape the infrastructure of tomorrow.
If you're looking for mission, momentum, and the chance to make an outsized impact, jump on the rocket ship. We’re just getting started.
About Lumilens
At Lumilens, we are building the critical photonics infrastructure powering the next generation of AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, our technology enables faster, cooler, and dramatically more efficient systems. Backed by leading investors and built by industry veterans, we are scaling rapidly to bring cutting-edge silicon photonics into high-volume production.
The Role
As Director of Silicon Test Engineering, you will lead the strategy and execution of test development for Lumilens’ silicon photonics and semiconductor products. You will be responsible for building scalable, high-quality test solutions from characterization through high-volume production.
This role partners closely with design, product, and operations teams to ensure robust test coverage, optimized test cost, and high-yield manufacturing. You will play a critical role in ensuring only fully validated, high-performing devices reach our customers.
What You’ll Do
Lead Test Strategy & Execution
Define and drive the end-to-end silicon test strategy from characterization to wafer sort and final test
Lead development of ATE test solutions on platforms such as Advantest 93K and/or Teradyne
Establish scalable test architectures to support rapid product ramps and high-volume manufacturing
Own test coverage, quality metrics, and outgoing product reliability
Drive Yield & Test Optimization
Optimize test flows to reduce test time, improve coverage, and lower cost of test
Partner with product and process engineering to analyze yield data and drive continuous improvement
Identify and eliminate test escapes, ensuring robust screening of marginal or underperforming devices
Implement data-driven methodologies for yield learning and production ramp
Partner with Design & Cross-Functional Teams
Collaborate with design and DFT teams to ensure testability and coverage are built into products early
Translate simulation test patterns into ATE programs and production-ready solutions
Lead test plan reviews and drive alignment across engineering, product, and operations teams
Support new product introduction (NPI) and ensure seamless transition to high-volume manufacturing
Develop Test Infrastructure & Hardware
Oversee development of high-speed test hardware and interfaces for advanced silicon photonics devices
Ensure test solutions meet performance requirements for high-speed and mixed-signal applications
Drive innovation in test methodologies as product complexity exceeds standard tester capabilities
Leadership
Build and lead a high-performing silicon test engineering team
Set clear goals, drive accountability, and foster a culture of execution and continuous improvement
Mentor and develop engineers across test, product, and operations functions
Lead through influence across internal teams and external partners
What We’re Looking For
10+ years of experience in semiconductor or silicon photonics test engineering
5+ years of leadership experience managing engineering teams or complex test programs
Deep expertise in ATE test development (Advantest 93K and/or Teradyne platforms)
Strong background in silicon validation, production test, DFT/DFM, and high-speed digital or mixed-signal testing
Experience optimizing test time, coverage, yield, and cost in high-volume manufacturing
Proficiency in programming/scripting (C/C++, Python, Perl) and Linux environments
Proven ability to collaborate cross-functionally and drive alignment across design, product, and operations
Strong analytical, problem-solving, and communication skills
Comfortable operating in a fast-paced, startup environment
What We Offer
Competitive salary commensurate with experience
Comprehensive benefits package including health insurance
Professional development opportunities and certification support
Access to cutting-edge photonics technology and advanced packaging environments
Collaborative work environment with cross-functional teams solving complex engineering challenges
*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.