Principal - Signal Integrity Engineer

Celestica Inc.; California (MO); Hybrid; USD 120,000 - 180,000; Full time

Job summary

Celestica is seeking a Principal Signal Integrity Engineer to lead planning of digital PCB designs, simulations, lab verification, and troubleshooting signal integrity issues on complex boards.

You will drive design reviews for critical PCBs, collaborate with dispersed teams worldwide, and apply expertise in high-speed signaling up to 50Gbps, TDR/VNA measurements, and Lab testing to ensure robust performance.

Qualifications

• Bachelor's degree in Electrical Engineering and 12+ years in high-speed signaling and SI.
• Strong ability to lead, mentor and direct a workgroup on complex PCB designs.
• Experience with digital interfaces, SERDES, and signal integrity troubleshooting.

Responsibilities

• Define and develop next generation technologies for Networking, server and storage products.
• Lead design reviews for critical PCBs focusing on signal integrity and timing.
• Perform simulations, lab verification, and troubleshooting of SI issues.
• Collaborate with distributed teams and engage with customers on roadmaps.
• Develop test fixtures and interpret data-eye diagrams up to 50Gbps.

Skills

Signal integrity

PCB design

High-speed interfaces

SERDES

Allegro

ADS

HFSS

Sigrity

Education

Bachelor's degree in Electrical Engineering

Tools

Allegro

ADS

HFSS

Sigrity

Job description

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Principal - Signal Integrity Engineer

Date: Aug 21, 2026

Location: Remote Employee US, CA, US

Req ID: 140057
Region: Americas
Country: USA
State/Province: New Hampshire
City: Remote Employee US

Summary

Celestica Engineering is seeking a highly motivated and self-driven candidate qualified for the position of Signal Integrity Engineer to help design and build market leading Hardware Platform Solutions.
The Signal Integrity Engineer will play a critical role as the subject matter expert in the planning of digital PCB designs, simulation, lab verification, and troubleshooting signal integrity issues on completed designs. They will also be expected to help with design review of critical PCBs for signal integrity concerns. Good communications skills and ability to work with physically dispersed teams is a strong requirement

Detailed Description

• Define and Develop next generation technologies for Networking, server and storage products.


• Provides innovative solutions to unusually complex and sensitive problems requiring ingenuity and creativity.


• Serve as technical consultant and technical leader for their team.


• Engage with customers and suppliers on and product roadmaps and support.


• Communicates progress toward projects and program goals.


• Strong ability to lead, motivate and direct a workgroup.


• Proficiency in hardware systems environments and detail oriented.


• Strong organizational skills.


• Cross-Functional capabilities.


• PCB design fundamentals (single ended and differential signals)


• Signal loss Impedance control Crosstalk (near end and far end)


• Experienced with single-ended and differential signaling up to 50Gbps


• Experienced working with component models (touchstone files) and cascading models to generate complete system models for simulation


• Simulation of digital interfaces (FPGA to DRAM, SERDES interfaces)


• Simulation of analog paths through a combination of PCB, connector, and cable (signal driver to DUT)


• Proficient with 2D and 3D simulation tools (examples include ADS, ANSYS HFSS, Sigrity)


• Electrical length calculations for signal matching


• Familiar with looking at signals in both frequency (S-parameter) and time domain and understand how to interpret results when it comes to suitability for a particular application.


• Very familiar with generating and interpreting data-eye diagrams up to 50Gbps: NRZ and PAM4


• Proficient with Allegro or similar layout tool and schematics


• PCB Stack up design and familiar with fabrication limitations and cost trade-offs


• High Frequency board material experience


• Significant experience with measuring signal performance in the lab: TDR measurements and VNA measurements


• Able to develop test fixtures for making measurements (both custom design test boards as well as making \\"ad hoc\\" probing solutions to troubleshoot existing PCBs)


• Expert in cost vs performance tradeoffs when designing signal paths as cost is key design constraint


• Experience with flex circuit design for high speed signaling Education

Typical Experience

12+ years experience with High Speed Signal Delivery Design and Evaluation. This includes both signal integrity within a PCB and off the board (board to board connectors, ribbon cables, coaxial cable, etc.).

Typical Education

Bachelor's degree in Electrical Engineering, Master's is preferred

Notes

This job description is not intended to be an exhaustive list of all duties and responsibilities of the position. Employees are held accountable for all duties of the job. Job duties and the % of time identified for any function are subject to change at any time.

Celestica is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, pregnancy, genetic information, disability, status as a protected veteran, or any other protected category under applicable federal, state, and local laws.
This policy applies to hiring, promotion, discharge, pay, fringe benefits, job training, classification, referral and other aspects of employment and also states that retaliation against a person who files a charge of discrimination, participates in a discrimination proceeding, or otherwise opposes an unlawful employment practice will not be tolerated. All information will be kept confidential according to EEO guidelines.
Celestica is an E-Verify employer.

COMPANY OVERVIEW:

Celestica, Inc. (NYSE: CLS; TSX: CLS) is a technology leader dedicated to driving customer success and market advancements. With deep expertise in design, engineering, manufacturing, supply chain, and platform solutions, Celestica enables critical data center infrastructure for AI, cloud, and hybrid cloud and advances technologies in high-growth markets. With a talented team and a strategic global network, Celestica helps its customers achieve competitive advantages.

Today, Celestica delivers innovative supply chain solutions globally to customers in strategic two operating and reporting segments: Advanced Technology Solutions (ATS) and Connectivity and Cloud Solutions (CC):

ATS: This segment serves customers in complex, regulated and high-reliability markets such as Industrial & Smart Energy, Aerospace & Defense, Semiconductor Capital Equipment, and HealthTech. It is engineering led, with deep expertise in design, manufacturing and lifecycle solutions.

CCS: This segment focuses on high-performance technology solutions and services for the data center, serving hyperscalers, digital native customers and enterprises. Celestica's Platform Solutions offering provides innovative and customizable computing, storage and networking solutions enabling AI-driven growth.

Built on a legacy of trust and performance, Celestica has earned its reputation by delivering results in complex and fast-changing markets. Celestica exceeds customer expectations by identifying trends and staying ahead of the curve. Backed by comprehensive capabilities and a global network across North America, Europe and Asia, Celestica helps customers gain competitive advantage with the quality, flexibility and resiliency they need to respond quickly to shifts in demand. Guided by a bold vision to accelerate market advancements, Celestica delivers innovative solutions and technologies that turn complexity into opportunity. Anchored in teamwork and commitment, Celestica strives to be the most trusted partner to its customers and colleagues worldwide.

Celestica would like to thank all applicants, however, only qualified applicants will be contacted.
Celestica does not accept unsolicited resumes from recruitment agencies or fee based recruitment services.

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