Senior Signal Integrity Engineer

Amphenol Communications Solutions; Yocumtown (PA); On-site; USD 120,000 - 180,000; Full time

Job summary

Amphenol Communications Solutions in Valley Green, PA is seeking a Senior Signal Integrity Engineer to design, characterize, and qualify high-speed RF coaxial and twinaxial cable assemblies for data center interconnects up to 224G/448G PAM4. The role blends hands-on measurements with simulations and cross-functional collaboration.

You'll use VNA, TDR, BERT, and 3D EM tools such as HFSS or CST, drive root-cause analysis, and contribute to qualification plans.

Qualifications

• BS or MS in Electrical/Electronics Engineering or related field.
• 3+ years in signal integrity, RF/microwave, or high-speed interconnect design.
• Hands-on experience with VNA, TDR/TDT, and BERT test equipment.
• Strong understanding of transmission line theory, impedance matching, and high-speed channel design (112G/224G NRZ/PAM4).
• Proficiency with S-parameter analysis tools and EM simulation software (HFSS, ADS).
• Working knowledge of Python or MATLAB for data analysis and automation.
• Familiarity with cable/connector construction and manufacturing processes.

Responsibilities

• Perform S-parameter measurements (VNA) and time-domain reflectometry (TDR) on coax and twinax cable assemblies to characterize insertion loss, return loss, crosstalk, and impedance discontinuities.
• Conduct BERT-based bit error rate testing and eye-diagram analysis to validate signal integrity margins across cable/connector interfaces.
• Support 3D EM simulation (HFSS, CST, or similar) of cable terminations, connector interfaces, and cartridge assemblies to correlate simulated vs. measured performance.
• Drive root-cause analysis on SI failures (e.g., echo/reflection issues, lane failures, mechanical-to-electrical correlation) and recommend design or process corrective actions.
• Collaborate with mechanical and manufacturing engineering on cable construction, termination geometry, connector mating interfaces, and material selection (dielectrics, shielding, lubrication) as they affect electrical performance.
• Support qualification test plans and re-qualification workflows, including differential pair testing, leg-line S-parameter rechecks, and reliability correlation studies (e.g., Tlife testing).
• Develop and maintain test fixtures, automation scripts, and data analysis pipelines (Python/MATLAB) for high-throughput characterization.
• Present findings and design recommendations to internal stakeholders and customers, including executive-level summaries of qualification status and risk.
• Stay current with industry standards (IEEE 802.3, OIF-CEI) and channel modeling methodologies for next-gen data rates.

Skills

Signal integrity

High-speed interconnect design

RF/microwave engineering

S-parameter analysis

EM simulation

Python

MATLAB

Cable/connector construction

Education

B.S./M.S. in Electrical Engineering or related

Tools

VNA

TDR/TDT

BERT

HFSS

ADS

Job description

Amphenol Communications Solutions (ACS), a division of Amphenol Corporation, is a world leader in interconnect solutions for Communications, Mobile, RF, Optics, and Commercial electronics markets. Amphenol Corporation is one of the world’s largest designers and manufacturers of electrical, electronic and fiber optic connectors and interconnect systems, antennas, sensors and sensor-based products and coaxial and high-speed specialty cable. ACS has an expansive global presence in research and development, manufacturing, and sales. We design and manufacture a wide range of innovative connectors as well as cable assemblies for diverse applications including server, storage, data center, mobile, RF, networking, industrial, business equipment, and automotive.

Position: Senior Signal Integrity Engineer

Location: Valley Green, PA

We are seeking a Signal Integrity Engineer to support the design, characterization, and qualification of high-speed RF coaxial and twinaxial cable assemblies used in next-generation data center and networking interconnects. This role combines hands-on measurement work (VNA, TDR, BERT) with simulation and cross-functional collaboration to ensure cable and connector systems meet demanding electrical performance targets at data rates up to 224G/448G PAM4.

Key Responsibilities

• Perform S-parameter measurements (VNA) and time-domain reflectometry (TDR) on coax and twinax cable assemblies to characterize insertion loss, return loss, crosstalk, and impedance discontinuities
• Conduct BERT-based bit error rate testing and eye-diagram analysis to validate signal integrity margins across cable/connector interfaces
• Support 3D EM simulation (HFSS, CST, or similar) of cable terminations, connector interfaces, and cartridge assemblies to correlate simulated vs. measured performance
• Drive root-cause analysis on SI failures (e.g., echo/reflection issues, lane failures, mechanical-to-electrical correlation) and recommend design or process corrective actions
• Collaborate with mechanical and manufacturing engineering on cable construction, termination geometry, connector mating interfaces, and material selection (dielectrics, shielding, lubrication) as they affect electrical performance
• Support qualification test plans and re-qualification workflows, including differential pair testing, leg-line S-parameter rechecks, and reliability correlation studies (e.g., Tlife testing)
• Develop and maintain test fixtures, automation scripts, and data analysis pipelines (Python/MATLAB) for high-throughput characterization
• Present findings and design recommendations to internal stakeholders and customers, including executive-level summaries of qualification status and risk
• Stay current with industry standards (IEEE 802.3, OIF-CEI) and channel modeling methodologies for next-gen data rates

Required Qualifications

• B.S. or M.S. in Electrical Engineering, Electronics Engineering Technology, or related field
• 3+ years of experience in signal integrity, RF/microwave engineering, or high-speed interconnect design
• Hands-on experience with VNA, TDR/TDT, and BERT test equipment
• Strong understanding of transmission line theory, impedance matching, and high-speed channel design (112G/224G NRZ/PAM4)
• Proficiency with S-parameter analysis tools and EM simulation software (HFSS, ADS, or equivalent)
• Working knowledge of Python or MATLAB for data analysis and test automation
• Familiarity with cable/connector construction (coax, twinax, differential pair) and manufacturing processes

Preferred Qualifications

• Experience with copper cable qualification for 400G/800G+ applications
• Familiarity with mechanical float/guide-pin interfaces and connector mating force analysis
• Experience with large-scale data analytics (Excel/Power BI/Python pipelines) for cross-vendor quality comparisons
• IEEE EMC/SI community involvement or publications
• Experience supporting customer-facing technical reviews or program-level qualification gates

Amphenol Corporation is proud of our reputation as an excellent employer. Our focus is to provide the highest level of support and responsiveness to both our employees and our customers, the world's largest technology companies. Amphenol Corporation offers the opportunity for career growth within a global organization. We believe that Amphenol Corporation is unique in that every employee, regardless of his or her position, has the ability to positively impact the business.

Amphenol is an “Equal Opportunity Employer” - Minority/Female/Disabled/Veteran/Sexual Orientation/Gender Identity/National Origin. For additional company information please visit our website at https://www.amphenol-cs.com/