Staff High-Speed I/O Test Engineer

The role

You will validate and architect package and system-level test strategies for high-speed I/O interfaces on Lightmatter's product line. This involves executing high-speed electrical characterization, driving link bring-ups, and stress-testing I/Os in system environments.

What you will do

• Execute high-speed serial I/O characterization and validation across multiple platforms.
• Work with architecture, signal integrity, and silicon design teams to conceptualize test techniques.
• Architect test concepts, test platforms, and design-for-test rules.
• Set up and operate high-speed lab equipment including oscilloscopes, BERTs, AWGs, TDRs, and VNAs/PNAs.
• Develop Python-based test software and scripts for automation and data analysis.
• Define and develop stress testing methodologies to identify design operating limits.
• Troubleshoot and triage complex issues with compliance test hardware, fixtures, software, and the Device Under Test.
• Work with vendors to specify and procure test equipment.

Required qualifications

• Master’s in Electrical Engineering, Computer Engineering, or a related field.
• 6+ years of industry experience in transceiver, SerDes, or high-speed link test development on products.
• Extensive hands-on lab experience and familiarity with high-speed equipment, including oscilloscopes, BERTs, PPGs, VNAs, and spectrum analyzers.
• Strong familiarity with high-speed interfaces and analog building blocks (e.g., PLL, CDR, CTLE, DFE, FFE, and FEC).
• Experience in test system automation and data processing using Python.
• Strong analytical and debugging skills to identify and solve hardware and signal integrity issues.
• Ability to convey complex technical concepts to both technical and non-technical stakeholders.

Nice to have

• Hands-on experience in the characterization and testing of silicon photonics components and circuits (e.g., tunable lasers, power meters, polarization synthesizers, OBR/OVA).
• Understanding of Silicon Photonics components and optical testing methodologies.
• Deep knowledge of system-level SerDes design and channel analysis, including understanding insertion loss, return loss, crosstalk, and link training algorithms.
• Knowledge of industry specifications such as IEEE 802.3, OIF, PCIe, or USB4.
• Ph.D. with 2+ years of relevant industry experience.

Benefits

• Comprehensive Health Care Plan (Medical, Dental & Vision)
• Retirement Savings Matching Program
• Life Insurance (Basic, Voluntary & AD&D)
• Generous Time Off (Vacation, Sick & Public Holidays)
• Paid Family Leave
• Short Term & Long Term Disability
• Training & Development
• Commuter Benefits
• Flexible, hybrid workplace model
• Equity grants

Before you apply

• Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws.

About the company

Lightmatter is leading the revolution in AI data center infrastructure with its 3D-stacked photonics engine, Passage™. The company is (re)inventing the future of computing with light.