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Lead SI Engineer

Date: Mar 30, 2021

Location: Shanghai, CN

Company: Celestica International Inc.

Req ID: 67062 
Region: Asia 
Country: China 
State/Province: Shanghai 
City:  Shanghai 

Position Description:

As a Signal Integrity Engineer, you will be part of an exciting team developing, delivering products for servers/storages/communication products. Your major duties will be to serve as the signal integrity analyst for products and provide the support to external and internal customers, team members, and others during R&D phase.


Specific Job Responsibilities:

  • PCB material choosing and stack-up definition
  • 3D passive channel modeling, perform SerDes channel extraction using electromagnetic tools
  • Perform signal integrity pre-layout and post-layout analysis in R&D phase.
  • Perform static timing and signal integrity analysis of parallel (common clock, source-synchronous) interfaces
  • Design and analysis of multi-gigabit serial links, including lab verification and tuning.
  • Perform power integrity analysis on power delivery network
  • Generate and verify PCB layout rules, manage constraints for PCB layout
  • Work directly with ASIC and PCB design teams to evaluate design tradeoffs and optimize design performance / risk / cost / manufacturability
  • Cooperate with R&D team and other signal test engineers on debugging, failure analysis and fixing issues discovered during test.
  • Be familiar with SAS, PCIe, DDR3/4, 25G/56G Ethernet specification is a plus.



  • Experience with at least one PCB post-route SI tool: Cadence SPECCTRAQuest, Mentor ICX, SiSoft SI-Auditor (preferred), Sigrity Power SI.
  • Experience with Synopsys HSPICE and/or Keysight ADS for both time and frequency domain circuit simulation
  • Experience with at least one 3-D field solver (CST Microwave Studio, ANSYS HFSS)
  • Experience with TDR and VNA measurements
  • Proficiency in Electromagnetic, Transmission-line & S-parameters theory and modeling.
  • Good understanding on power distribution and SerDes design
  • BSEE or related field with 5 years of applicable work experience or MSEE or related field with 3 years of experience


Desired Skills:

  • Experience of script languages like VB, Perl or Python
  • Use of mathematic tools like Matlab
  • Strong written and oral communication in English with customer service skills

Celestica (NYSE, TSX: CLS) is a US$5.6 billion global leader in the delivery of end-to-end product lifecycle solutions. Our customers trust us to deliver the most advanced design, engineering and manufacturing expertise for their highly sophisticated and complex products. From advanced medical devices, to highly engineered aviation systems, to next-generation hardware solutions for the Cloud, at Celestica we manage the complexity for our customers and set the bar for quality and reliability in their markets. Our customer portfolio includes leaders in the enterprise computing, communications, aerospace and defense, industrial, smart energy, healthtech and semiconductor markets. Headquartered in Toronto, our global network spans 13 countries with 26,000 employees throughout the Americas, Europe and Asia.

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