Sr. Principal Signal Integrity Engineer

Job Title

Sr. Principal Signal Integrity Engineer

Role Summary

Lead signal-integrity (SI) analysis and design effort for high-speed interfaces across ASIC/SoC packages, PCBs, and system interconnects. Work with architecture, package, board, and validation teams to define SI requirements, perform simulations and measurements, and drive design decisions to meet signal- and power-integrity targets.

Experience Level

Senior-level / Principal engineer. Senior individual contributor with leadership responsibilities; typically 8+ years of relevant industry experience (exact years not specified in source).

Responsibilities

Primary technical and cross-team responsibilities for this role include:

• Define SI requirements and verification plans for high-speed SerDes, DDR, PCIe, and similar interfaces.
• Perform SI/PI simulations (time-domain and frequency-domain) for package, board, and cable channels; model extraction and channel characterization.
• Develop and validate signal and power integrity models; create IBIS/IBIS‑AM, S-parameter, and equivalent circuit models as needed.
• Run lab measurements (TDR/TDT, VNA, eye diagrams, BER testing) and correlate results with simulation data.
• Provide design recommendations to meet timing margins, jitter, crosstalk, and channel loss budgets; drive design trade-offs with architects and hardware teams.
• Mentor and guide junior SI engineers; lead design reviews and contribute to cross-functional engineering processes and documentation.

Requirements

Essential technical skills and experience expected for the role. Education items (degrees, fields) are summarized separately below.

• Proven track record in signal-integrity analysis for high-speed digital interfaces (SerDes, DDR, PCIe or equivalent).
• Hands-on experience with SI/EM/PI tools and workflows (e.g., S-parameter extraction, time-domain simulators, IBIS/IBIS‑AM workflows).
• Experience with measurement equipment and techniques: TDR/TDT, VNA, scope-based eye/BER testing, and channel characterization.
• Ability to create and validate channel models and to correlate measurement data with simulations.
• Strong problem-solving skills and ability to communicate technical results to architects, package/board designers, and validation teams.
• Nice-to-have: experience with package/board co-design, power-integrity analysis, signal-reference plane management, or high-volume product development.

Education Requirements

Not specified.

About the Company

Company: Rambus

Headquarters: Sunnyvale, California, USA

Rambus is a global leader in advanced semiconductor and technology solutions, specializing in enhancing data access and improving performance in computing, networking, and storage applications. The company is known for its innovative IP and solutions in memory, security, and interface technologies. With a strong focus on research and development, Rambus continues to push the boundaries of technology to meet the growing demands of the digital age.