Senior SerDes & High-Speed PHY Validation Engineer at Xsight Labs – Kiryat Gat | Jobyssey

About the Role

We are looking for a highly motivated Senior SerDes & High-Speed PHY Validation Engineer to play a key role in validating next-generation high-speed connectivity solutions for cloud, AI, and data center networking systems.

In this role, you will lead the validation and characterization of advanced Ethernet SerDes technologies spanning 112G PAM4 and next-generation 224G PHY architectures. You will work at the intersection of silicon design, signal integrity, system engineering, and validation, driving complex technical investigations from first silicon bring-up through compliance and product readiness.

This opportunity is ideal for engineers who enjoy combining deep signal integrity knowledge, hands-on lab ownership, automation development, and cross-functional technical leadership to solve challenging high-speed design and validation problems.

What You'll Do

Lead SerDes Validation and Characterization

Drive end-to-end validation of high-speed Ethernet SerDes and PHY solutions across silicon, package, board, and system environments.
Define and execute validation strategies for 112G PAM4 and next-generation 224G technologies.
Develop characterization methodologies to assess performance, robustness, and design margins across operating conditions.
Support silicon bring-up activities and root-cause analysis of complex system-level issues.

Execute Advanced High-Speed Measurements

Perform and analyze:

Eye-diagram measurements
BER and margin analysis
Bathtub curve characterization
Jitter decomposition (RJ, DJ, TJ)
CTLE and DFE performance evaluation
TX FIR optimization
Channel loss and equalization analysis

Debug Complex Signal Integrity Challenges

Investigate and resolve performance limitations across:

Silicon
Package
PCB channels
Connectors
Cables
End-to-end system interconnects

Work closely with design and architecture teams to translate lab findings into actionable design improvements.

Validation Automation

Work with existing validation and data-analysis frameworks to improve test efficiency, repeatability, and coverage.
Contribute to automation solutions that streamline test execution, data collection, analysis, and reporting.
Collaborate with team members to enhance lab productivity and accelerate debug cycles.

Work with Industry-Leading Test Platforms

Configure and operate advanced Keysight validation equipment, including:

BERTs
High-speed oscilloscopes
Channel emulators
Vector network analyzers (VNAs)

Influence Next-Generation Products

Partner closely with SerDes, PHY, SI/PI, package, board, and system design teams.
Contribute to validation methodologies that will be used across future product generations.
Provide technical recommendations that directly influence product performance and customer success.

Drive Standards Compliance

Execute compliance and interoperability testing according to industry standards, including:

IEEE 802.3cd, 802.3ck, and emerging IEEE P802.3dj Ethernet specifications
Ethernet compliance and interoperability test methodologies

Document and Communicate Results

Produce clear validation plans, test reports, and technical recommendations.
Present findings to engineering stakeholders and leadership teams.
Drive issues to closure through data-driven analysis and collaboration.

Requirements

Required Qualifications

5+ years of experience in SerDes validation, PHY validation, signal integrity, or related high-speed design environments.
Hands-on experience validating high-speed PAM4-based communication systems.
Strong understanding of:
PAM4 signaling
BER measurements and margining techniques
Jitter analysis and decomposition
Equalization techniques (CTLE, DFE, FFE)
Channel loss and signal integrity fundamentals
Experience operating high-speed lab equipment such as oscilloscopes, BERTs, VNAs, and related instrumentation.
Strong automation and scripting skills using Python - advantage.
Experience working in Linux environments - advantage.
Ability to independently drive technical investigations and resolve complex validation issues.
B.Sc. or M.Sc. in Electrical Engineering or a related field.

Preferred Qualifications

Experience with 112G Ethernet SerDes validation.
Experience with 224G SerDes technologies.
Familiarity with Ethernet and relevant IEEE standards.
Experience with compliance and interoperability testing.
Experience using Keysight validation platforms and automation APIs.
Experience with SQL-based data analysis.
Experience with first-silicon bring-up and characterization.

Why Join Us?

Work on Technology That Matters

Help develop the high-speed connectivity technologies powering next-generation AI infrastructure, cloud-scale networking systems, and hyperscale data centers.

Influence Product Direction

Your findings will directly impact silicon, PHY, package, and system-level design decisions across multiple product generations.

Solve Cutting-Edge Technical Challenges

Work on some of the industry's most advanced Ethernet and SerDes technologies, including emerging 224G architectures and future high-bandwidth interconnect solutions.

Join an Expert Team

Collaborate with experienced engineers across SerDes design, validation, signal integrity, systems, and architecture in a highly technical and innovation-driven environment.

Access World-Class Labs

Work with state-of-the-art validation and measurement platforms to tackle the toughest high-speed networking challenges.

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Requirements