SerDes & High-Speed PHY Validation Engineer

Xsight Labs; Trentino-Alto Adige; On-site; EUR 60,000 - 90,000; Full time

Job summary

Xsight Labs is seeking a motivated SerDes & High-Speed PHY Validation Engineer to join our connectivity validation team and contribute to next-generation Ethernet networking solutions for AI and data center applications.

You will validate 112G PAM4 and future 224G PHY architectures, perform eye-diagram, BER, and jitter analyses, and collaborate with SI/PI, design and system teams to deliver robust lab-tested products.

Qualifications

• 2+ years in SerDes or PHY validation or high-speed design.
• Experience with PAM4 signaling and BER measurements.
• Strong analytical and debugging skills; collaborative.
• Familiar with lab equipment like oscilloscopes, BERTs, VNAs.

Responsibilities

• Validate and characterize high-speed Ethernet SerDes and PHY across silicon, package, board, and system.
• Perform eye-diagram, jitter, and margin analyses under varying conditions.
• Support silicon bring-up and debug; assist root-cause investigations.
• Develop validation automation and data analysis workflows.
• Document tests and present findings to teams.

Skills

SerDes validation

Signal integrity

BER measurements

Jitter analysis

Equalization concepts

Education

B.Sc. or M.Sc. in Electrical Engineering

Tools

Oscilloscopes

BERTs

VNAs

Job description

About the Role

We are looking for a motivated SerDes & High-Speed PHY Validation Engineer to join our high-speed connectivity validation team and contribute to the development of next‑generation Ethernet networking solutions for cloud, AI, and data center applications.

In this role, you will participate in the validation and characterization of advanced Ethernet SerDes technologies spanning 112G PAM4 and next generation 224G PHY architectures. You will work closely with validation, design, signal integrity, and system teams to ensure robust and compliant high‑speed communication solutions from first silicon bring‑up through product readiness.

This opportunity is ideal for engineers who enjoy hands‑on lab work, high‑speed measurements, signal integrity challenges, and collaboration across multiple engineering disciplines.

What You'll Do

Perform SerDes Validation and Characterization

• Execute validation activities for high‑speed Ethernet SerDes and PHY solutions across silicon, package, board, and system environments.
• Perform characterization testing to evaluate performance, robustness, and design margins across operating conditions.
• Support silicon bring‑up and debug activities.
• Contribute to root‑cause investigations and issue resolution.

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 Signal Integrity Challenges

Assist in investigating performance limitations across:

• Silicon
• Package
• PCB channels
• Connectors
• Cables
• End‑to‑end system interconnects

Work closely with design and architecture teams to support technical investigations and design improvements.

Validation Automation

• Work with existing validation and data‑analysis frameworks to improve test efficiency and coverage.
• Contribute to automation solutions supporting test execution, data collection, analysis, and reporting.
• Participate in developing tools that improve lab productivity and debug efficiency.

Work with Industry‑Leading Test Platforms

Configure and operate advanced high‑speed validation equipment, including:

• BERTs
• High‑speed oscilloscopes
• Arbitrary waveform generators (AWGs)
• Jitter injection systems
• Channel emulators
• Vector network analyzers (VNAs)

Collaborate Across Engineering Teams

Work closely with:

• SerDes and PHY design teams
• SI/PI engineers
• Package and board‑design teams
• System and validation engineers

Drive Standards Compliance

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

• IEEE 802.3cd
• IEEE 802.3ck
• IEEE P802.3dj

Document and Communicate Results

• Document validation procedures and test results.
• Prepare clear technical summaries and reports.
• Present findings and recommendations to team members and stakeholders.

Required Qualifications

• 2+ years of experience in SerDes validation, PHY validation, signal integrity, or related high‑speed design environments.
• Experience working with high‑speed communication systems.
• Understanding of:
• PAM4 signaling
• BER measurements
• Jitter analysis fundamentals
• Equalization concepts (CTLE, DFE, FFE)
• Signal integrity principles
• Experience using laboratory equipment such as oscilloscopes, BERTs, VNAs, or similar instruments.
• Strong analytical and debugging skills.
• Ability to work effectively in a collaborative engineering environment.
• B.Sc. or M.Sc. in Electrical Engineering or a related field.

Preferred Qualifications

• Experience with Ethernet SerDes validation.
• Experience with 112G PAM4 technologies.
• Familiarity with 224G SerDes technologies.
• Familiarity with Ethernet and IEEE specifications.
• Experience with compliance and interoperability testing.
• Experience with Keysight validation platforms and automation APIs.
• Python scripting and automation experience.
• Familiarity with Linux environments and shell scripting.
• Experience with data analysis tools, databases, or SQL.
• Experience with 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.

Learn from Industry Experts

Work alongside experienced SerDes, PHY, validation, and signal integrity engineers on some of the industry's most advanced connectivity technologies.

Grow Your Technical Expertise

Gain hands‑on experience with state‑of‑the‑art validation methodologies, advanced measurement equipment, and next‑generation Ethernet technologies.

Access World‑Class Labs

Work with cutting‑edge Keysight validation and measurement platforms in a highly technical and collaborative environment.