Senior Signal Integrity Engineer

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

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)
• Familiarity with Python or MATLAB for data analysis and test automation
• Working knowledge of 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

Pay

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.