Silicon Validation, Test & Characterization Engineer (SerDes)

Location: Bay Area, on-site

Company

Building NuLink, a proprietary die-to-die chiplet interconnect fabric for AI infrastructure at hyperscale.

What you will do

• Execute early silicon bring-up, including system initialization, validation infrastructure development, and test-content creation for high-speed interfaces.
• Define and execute post-silicon validation plans for multi-Gbps SerDes, PHYs, PCIe, CXL, Ethernet, DDR, and related interconnect technologies.
• Develop Python and TCL automation frameworks and test scripts to improve validation efficiency and coverage.
• Perform electrical and protocol-level validation, including BER testing, jitter and eye-diagram analysis, compliance testing, and margin assessment.
• Correlate lab measurements with simulations, debug discrepancies, and identify root causes across silicon, package, and board levels.
• Document findings and support design, architecture, systems, product engineering, manufacturing, and test teams through productization and production ramp.

Requirements

• 3+ years of experience in chip bring-up, post-silicon validation, and high-speed interconnect debug.
• Hands-on experience with high-speed laboratory equipment, including high-bandwidth oscilloscopes, BERTs, DCAs, VNAs, and TDRs.
• Knowledge of signal integrity, power integrity, clock architectures, analog and mixed-signal systems, high-speed DACs and ADCs, equalization, and link-training protocols.
• Ability to correlate silicon measurements with design simulations and models and drive systematic debug.
• Strong scripting and automation skills, with Python preferred.
• MS or PhD in electrical engineering, computer engineering, physics, or a related field, plus strong analytical, communication, and leadership skills.

Nice to have

• Experience with PCB or evaluation-board validation.

Culture & Benefits

• Cross-functional work with experienced design, architecture, systems, product, manufacturing, and test engineering teams.
• First-principles engineering approach focused on high-performance, high-volume manufacturable products.
• Fun work environment with excellent benefits.