Senior Signal Integrity Engineer

Amphenol Communications Solutions; Yocumtown (PA); On-site; USD 95,000 - 150,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Vision benefits

401K matching

Day-1 benefits

Job summary

Amphenol Communications Solutions is seeking a Senior Signal Integrity Engineer in Santa Clara, CA to validate high-speed RF coaxial and twinaxial assemblies for 224G/448G PAM4 data rates.

Responsibilities include hands-on measurements with VNA/TDR/BERT, plus EM simulations and root-cause analysis. Collaboration with mechanical and manufacturing teams will optimize terminations and material choices for electrical performance.

Qualifications

• BS/MS in Electrical Engineering or related field.
• Hands-on measurement with VNA, TDR/TDT, and BERT.
• Experience with high-speed interconnect design and SI challenges.

Responsibilities

• Perform S-parameter measurements on coax and twinax assemblies to characterize loss, return loss, and impedance discontinuities.
• Conduct BERT-based BER testing and eye-diagram analysis to validate SI margins.
• Support 3D EM simulations (HFSS, CST) to correlate simulated vs. measured performance.
• Drive root-cause analysis on SI failures and recommend design or process changes.
• Collaborate with mechanical and manufacturing teams on cable construction and terminations.
• Support qualification test plans and re-qualification workflows for high-speed links.
• Develop test fixtures and data analysis pipelines (Python/MATLAB) for high-throughput characterization.
• Present findings and recommendations to internal stakeholders and customers.

Skills

VNA

TDR/TDT

BERT

S-parameter analysis

EM simulation

Python pipelines

Education

Bachelor's or MS in Electrical Engineering

Tools

HFSS

ADS

Python

MATLAB

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: Santa Clara, CA

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

The base salary range for this position is $95,000 to $150,000. In determining rate of pay, Amphenol considers a variety of nondiscriminatory factors, including but not limited to geographic location, relevant industry experience, qualifications, skills, and education. It would be rare for an individual to be hired at or near the top of the range for a given role. Base salary is one facet of Amphenol's total rewards package which includes participation in our comprehensive benefits program with medical, dental, and vision benefits effective day 1, vacation, sick leave, personal days, paid holidays, life insurance, short/long term disability, and matching 401K.

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/