Signal Integrity Engineer
LightmatterVisit Lightmatter website
Lightmatter is a photonic-computing company developing optical interconnects and light engines for AI-scale data centers.
Mountain View, United States
Funding history
About Lightmatter
Founded in 2017 by MIT researchers, Lightmatter develops photonic infrastructure for AI, including its Passage interconnect platform and Guide light engine.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will plan and execute signal-integrity work for high-speed interfaces. You will analyze channels, run simulations, support hardware and PCB design decisions, perform lab measurements, troubleshoot issues, participate in design reviews, and communicate analysis results and guidelines.
Requirements
- BS or MS degree in Electrical Engineering or a relevant field with at least 5 years of related experience
- Knowledge of signal-integrity analysis for high-speed interfaces
- Proficiency with Ansys Siwave, HFSS, and Keysight ADS
- Knowledge of transmission line theory, impedance matching, and equalization
- Knowledge of SerDes and UCIe signaling protocols
- Knowledge of signal integrity and timing for clocks, SPI, and I2C
- Experience with high-speed PCB design and layout
- Lab measurement and characterization experience
- Scripting experience with Python, JavaScript, Ocean scripts, or SKILL
Responsibilities
- Plan and execute signal-integrity tasks for PCIe, UCIe, and SerDes interfaces
- Analyze S-parameters, insertion loss, return loss, and crosstalk
- Perform signal-integrity simulations including eye, jitter, and equalization analysis
- Collaborate with hardware designers and PCB layout engineers
- Advise on impedance matching, termination, and routing
- Perform signal-integrity measurements and characterization
- Participate in design reviews
- Document and communicate analysis results and design guidelines
Benefits
- Comprehensive medical, dental, and vision coverage
- Retirement savings matching program
- Life insurance
- Vacation, sick time, and public holidays
- Paid family leave
- Short-term and long-term disability coverage
- Commuter benefits
- Flexible hybrid workplace model
- Equity grants for eligible full-time employees
