Job Description

Job Title

SI/PI Simulation Engineer -- Signal Integrity & Power Integrity

Job Summary

An experienced

SI/PI Simulation Engineer

required to join our RF/PCB team. The candidate will be responsible for signal- and power-integrity analysis of PCBs, packages, and high-speed interconnects, supporting design reviews, verification, and troubleshooting to ensure robust electrical performance for high-frequency and mixed-signal products.

Key Responsibilities

Perform Signal Integrity (SI) and Power Integrity (PI) simulations for PCB designs, multi-layer stacks, connectors, and packages. Model and analyze high-speed channels (DDR/PCIe/USB/SerDes), interconnects, vias, and transitions to meet timing, eye-diagram, and jitter budgets. Perform PI analysis: PDN impedance, decoupling network optimization, transient power distribution analysis, and capacitor placement. Extract and validate S-parameters, insertion/return loss, crosstalk (NEXT/ FEXT), time-domain reflectometry (TDR), and eye diagrams. Generate and validate stack-up definitions, impedance-controlled traces, differential pair routing, and design-for-signal-integrity guidelines. Work with PCB layout engineers to recommend layout fixes -- via placement, return paths, stitch vias, plane splits, and decoupling placements. Support pre- and post-layout simulation workflows; run design-of-experiments (DOE) and parametric sweeps to optimize designs. Validate simulations with measurements (VNA, TDR, oscilloscope eye tests) and correlate models to test data. Document simulation reports, assumptions, mitigation plans, and provide actionable design guidelines. Collaborate with cross-functional teams (hardware, mechanical, RF, firmware) and participate in design reviews. Stay current with SI/PI best practices, signal/power modelling techniques, and industry standards.

Required Qualifications & Skills

Bachelor's or Master's degree in Electronics, Electrical Engineering, or related field. 1+ years of hands-on experience in SI/PI simulation for high-speed digital or RF systems. Strong understanding of transmission line theory, signal propagation, impedance control, crosstalk, reflections, and power distribution networks. Proficiency with at least two of the following tools: Ansys SIwave / HFSS Cadence Sigrity / Allegro SI Keysight ADS / EMPro / (time-domain/circuit) Mentor Graphics HyperLynx CST Studio Suite (Microwave Studio) Familiarity with measurement tools and lab validation: VNA, TDR, high-speed scope, jitter/de-emphasis testing, power integrity test setups. Good scripting skills (Python, MATLAB) for automating simulation workflows and post-processing. Strong problem-solving, communication skills, and ability to produce clear technical reports.

Preferred

Experience with Ansys HFSS for 3D EM extraction of connectors/complex transitions. Familiarity with packaging and chip-to-board interconnect (BGA modelling). Knowledge of EMC/EMI, thermal effects on SI/PI, and signal/power co-design. Experience with version control, PLM systems, and collaborative CAD tool workflows. * Prior work in telecom, server, aerospace, or defence domains is a plus.