Signal Integrity Engineer, Infrastructure Hardware

Meta's infrastructure hardware team is seeking a Staff Signal Integrity Engineer to drive the design and validation of high-speed interconnects across Meta's data center platforms. In this role, you will own the signal integrity methodology, design, analysis, and validation for next-generation AI, networking, compute, and storage platforms, ensuring reliable high-speed data transmission across Ethernet, PCIe, DDR, and optical interconnect interfaces. You will define SI/PI standards, guide platform architecture decisions, and collaborate closely with industry partners, hardware design, and silicon teams to deliver infrastructure at the scale Meta's global data centers demand.

Responsibilities
Develop next-generation SI/PI solutions across a broad range of Meta platforms, including AI, network, compute, and storage systems
* Perform signal integrity simulations, implementation, validation, and test methodologies at the platform, board, and system levels using industry-standard tools such as HSpice, ADS, or Sigrity to validate channel performance and margins
* Develop and maintain channel models, IBIS-AMI models, and S-parameter extraction workflows for board-level and system-level SI analysis including end-to-end electrical-optical-electrical channels
* Define the next generation of open on- and off-chip interconnect technologies and integrate these into highly scalable, deployable, and maintainable systems
* Collaborate with design and manufacturing teams to define stackup requirements, routing constraints, via structures, and impedance targets for multi-layer high-speed designs
* Drive lab correlation and validation activities, including TDR, VNA, and oscilloscope-based measurements, to verify simulation accuracy and characterize channel performance
* Partner with silicon vendors and internal ASIC teams to evaluate PHY specifications, equalization parameters, and link training behavior for new interface standards
* Establish design guidelines, review processes, and SI sign-off criteria adopted across Meta's infrastructure hardware portfolio
* Identify systemic signal integrity risks early in the design cycle and drive architectural trade-off decisions with hardware platform and mechanical engineering teams
* Mentor other engineers on signal integrity principles, simulation best practices, and measurement techniques to elevate the team's technical capability

Qualifications
Bachelor's degree in Electrical Engineering, Computer Science, Computer Engineering, or a relevant technical field, or equivalent practical experience
* 8+ years of experience in signal integrity engineering for high-speed digital systems, including board-level and system-level SI/PI analysis
* Experience with PCB board level design and layout, high-speed interconnect and switching using merchant silicon ASICs
* Proven track record of conceptualizing and delivering engineering solutions to customers
* Experience working with ODM and CM suppliers
* Programming experience in test/measurement automation and/or simulation Experience with 112G/224G PAM4 SerDes channel design, co-packaged optics, and optical channels, for data center networking applications
* Background in open compute or hyperscale data center hardware development with exposure to full platform design cycles from architecture through production validation
* Familiarity with IBIS-AMI modeling, channel simulation automation scripting, and statistical eye analysis methodologies
* Experience collaborating with silicon vendors on SerDes bring-up, equalization tuning, and compliance testing for next-generation interface standards
* Experience with advanced PCB materials, HDI materials and evolving interconnect technologies