Senior PCIe/CXL Electrical Validation Engineer

2 weeks ago

Santa Clara, United States Astera Labs Full time

Astera Labs is a global leader in purpose-built connectivity solutions that unlock the full potential of cloud and AI infrastructure. Our Intelligent Connectivity Platform integrates PCIe, CXL and Ethernet semiconductor-based solutions based on a software-defined architecture that is both scalable and customizable. Inspired by trusted partnerships with hyperscalers and the data center ecosystem, we are an innovation leader of products that are flexible, interoperable, and reliable. We are headquartered in the heart of California's Silicon Valley, with R&D centers and offices in Taiwan, China, Vancouver and Toronto, Canada, and Haifa, Israel.

The mission of this role is to develop and execute electrical validation tests to quantify parametric device performance and margins over all system conditions. The validation team holds customers' requirements in the highest regard and is solely responsible for certifying a product's parametric conformance to this high bar. At Astera Labs, we are looking for motivated Post-Silicon Validation Engineers to work on our game-changing portfolio of connectivity products for Artificial Intelligence and Machine Learning applications. In this role you will formulate a comprehensive post-Silicon validation plan, automate the testing of ICs and board products, design experiments to root-cause unexpected behavior, report results and specification compliance, and work with key internal customers to quantify margins and ensure robustness.

Basic qualifications

  • Strong academic and technical background in Electrical or Computer Engineering. At minimum, a Bachelor's is required, and a Master's is preferred.
  • ≥5 years experience supporting or developing complex SoC/silicon products for Server, Storage, and/or Networking applications.
  • Professional attitude with the ability to prioritize a dynamic list of multiple tasks, to plan and prepare for internal meetings in advance, and to work with minimal guidance and supervision.
  • Entrepreneurial, open-minded behavior and can-do attitude. Think and act with the customer in mind
  • Proven track record solving problems independently, preferably as a tech lead
Required experience
  • Familiarity with PCIe and CXL specs, especially Electrical Compliance sections
  • Working knowledge of key, high-speed design blocks such as PLL's, DFE, Tx EQ
  • Experience in system testing, characterization, margin analysis and optimization of high-speed PCIe/CXL data links over long and short channels
  • Strong python scripting ability: knowledge of object-oriented programming and basic dev ops using git for source control and collaboration
  • Deep background in developing bench automation techniques, preferably using Python, with emphasis on execution efficiency, repeatability, and data analysis.
  • Proficiency using high-speed lab equipment such as BERT, Oscilloscope, and VNA
Preferred experience
  • Hands-on experience with signal integrity, especially as it relates to PCIe/CXL testing and CEM/NVMe interfaces
  • Working knowledge of C or C++ for embedded FW
  • Familiarity with IEEE 802.3x Ethernet standards and both NRZ and PAM-4 signaling
  • Working knowledge of common serial data specifications such as I2C, SPI, etc
  • Knowledge of schematic capture and PCB layout tools from Cadence, Altium, etc.
  • Knowledge of simulation tools such as MATLAB, Keysight ADS, or PLTS for data analysis and modeling of electrical channel and signal integrity issues


We know that creativity and innovation happen more often when teams include diverse ideas, backgrounds, and experiences, and we actively encourage everyone with relevant experience to apply, including people of color, LGBTQ+ and non-binary people, veterans, parents, and individuals with disabilities.

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