Principal Design Verification Engineer- SerDes/PHY IP

Astera Labs is hiring a Principal Design Verification Engineer to own functional verification of our high-speed SerDes/PHY IP — the connectivity engine powering rack-scale AI infrastructure. You will architect verification environments, drive coverage closure, and ensure first-pass silicon success on the analog/digital boundary that defines next-generation AI systems.

This is a high-impact, hands-on role at the heart of Astera Labs' hyper-growth story. You'll partner directly with PHY analog/mixed-signal designers, digital architects, and SoC integration teams to verify multi-Gbps SerDes blocks that ship into the world's most advanced AI platforms, including UALink, UCIe, PCIe Gen 6/Gen 7, and Ethernet-based connectivity products.

Key Responsibilities

• Verification Architecture & Strategy

• Architect UVM-based verification environments for SerDes/PHY IP, including PMA, PCS, and PHY-MAC interface layers
• Define verification plans, coverage models, and sign-off criteria for high-speed serial link blocks
• Drive methodology decisions across analog/mixed-signal co-simulation, gate-level simulation, and emulation flows

• Execution & Coverage Closure

• Develop SystemVerilog/UVM testbenches, sequences, scoreboards, and reference models for multi-Gbps SerDes lanes
• Execute functional, performance, and corner-case verification across equalization, CDR, training, and link bring-up scenarios
• Lead coverage analysis and closure, debug failures with designers, and drive regressions to clean tape-out

• Physical Layer & Protocol Verification

• Verify PHY behavior against industry specifications including PCIe Gen 6/Gen 7, UALink, UCIe, and Ethernet PHY standards
• Model and validate channel behavior, link training state machines, and analog handoff scenarios
• Partner with analog/AMS designers on Real Number Modeling (RNM) and behavioral models for SerDes blocks

• Cross-Functional Leadership

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