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Simulation Engineer - Signal Integrity
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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.
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