Design Engineer Jobs in San Jose, CA

Role Overview

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

• • Mentor junior DV engineers and set technical direction across the verification team
  • Collaborate with SoC integration, firmware, post-silicon validation, and customer engineering teams
  • Contribute to verification IP reuse strategy and tooling improvements across product lines

Basic Qualifications

• Bachelor's degree in Electrical Engineering, Computer Engineering, or related field
• 8+ years of design verification experience on high-speed SerDes, PHY, or mixed-signal IP
• Strong understanding of the physical layer, including equalization (CTLE, DFE, FFE), CDR, training sequences, and link bring-up
• Expert-level proficiency in SystemVerilog and UVM
• Hands-on experience with analog/mixed-signal co-simulation and Real Number Modeling (RNM)
• Working knowledge of one or more high-speed serial protocols: PCIe, UALink, UCIe, Ethernet, or CXL

Preferred Qualifications

• MS or PhD in Electrical Engineering or Computer Engineering
• Experience verifying PCIe Gen 6/Gen 7, UALink, or UCIe SerDes/PHY IP
• Familiarity with emulation platforms (Palladium, Veloce, or ZeBu) and gate-level simulation flows
• Scripting proficiency in Python or Perl for verification automation and regression management
• Experience supporting post-silicon bring-up and correlating pre-silicon coverage with silicon results
• Proven ability to lead technically across a multi-disciplinary team in a fast-paced environment

Salary range is $207,000 to $230,000 depending on experience, level, and business need. This role may be eligible for discretionary bonus, incentives and benefits.