Technical Specialist - Silicon Platform Validation, Python
United States
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Job Description
Technical Specialist - Silicon Platform Validation, Python
Santa Clara, California

Job Summary

We are seeking an experienced SI/PI Engineer to join our Advanced Silicon Packaging team. In
this role, you will be responsible for signal integrity and power integrity analysis, modeling, and
design optimization of next-generation multi-die packaging architectures including 2.5D/3D
integration, silicon interposers, and high-bandwidth memory (HBM) interfaces.

Key Responsibilities

Perform SI/PI analysis and design optimization for advanced silicon packages (CoWoS,
EMIB, chiplet-based architectures, fan-out wafer-level packaging)
● Develop and validate high-speed channel models for package interconnects including
bumps, microbumps, TSVs, RDL layers, and silicon/organic interposers
● Conduct full-wave electromagnetic (EM) simulations of package structures to
characterize S-parameters, crosstalk, impedance, and insertion/return loss
● Design and optimize Power Distribution Networks (PDN) — including decoupling
strategy, IR drop analysis, and AC impedance profiling from die to board
● Perform time-domain simulations (eye diagram, BER analysis) for high-speed serial and
parallel interfaces (PCIe Gen5/6, UCIe, HBM3/3E, DDR5, SerDes >112 Gbps)
● Collaborate with IC design, package substrate design, PCB layout, and
thermal/mechanical teams to co-optimize package electrical performance
● Develop and correlate simulation models with lab measurements (VNA, TDR,
oscilloscope, power noise measurements)
● Define SI/PI design guidelines and constraints for package substrate stackup, routing
rules, and bump/via assignments
● Support design-for-manufacturability (DFM) reviews with OSAT partners and substrate
vendors
● Investigate and resolve SI/PI-related failures during silicon bring-up and validation
phase

Skill Requirements

5+ years of experience in SI/PI analysis for semiconductor packaging or high-speed
PCB design
● Strong proficiency with industry-standard EM and circuit simulation tools:
○ EM Solvers: Ansys HFSS, Ansys SIwave, Cadence Clarity 3D, Keysight ADS
Momentum
○ Circuit Simulation: Synopsys HSPICE, Cadence Spectre, Keysight ADS
○ PDN Analysis: Ansys RedHawk, Cadence Voltus, Sigrity PowerDC/PowerSI
● Deep understanding of transmission line theory, Maxwell's equations, and S-parameter
analysis
● Experience with high-speed interface protocols (PCIe, UCIe, HBM, DDR, Ethernet
SerDes)
● Proficiency in package stackup design, impedance control, and via transition
optimization
● Hands-on experience with measurement correlation (VNA, TDR/TDT, near-field
scanning)
● Programming/scripting skills (Python, MATLAB, Tcl) for automation and post-processing

Other Requirements

Technical Environment
Domain Tools & Technologies
EM Simulation Ansys HFSS, SIwave, Cadence Clarity 3D Solver, Keysight EMPro
Circuit Simulation HSPICE, ADS, Spectre, SystemVue
PDN Analysis RedHawk-SC, Voltus, PowerSI, PowerDC
Layout/Design Cadence APD/SiP, Synopsys IC Compiler, Mentor Xpedition
Scripting Python, MATLAB, Tcl, Perl
Measurement VNA (Keysight PNA-X), TDR (sampling scope), real-time oscilloscope
Standards PCIe 5.0/6.0, UCIe 1.1, HBM3/3E, DDR5, 112G/224G SerDe
Maximum Salary (US):  172000
Minimum Salary (US):  87000
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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 227,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending March 2026 totaled $14.7 billion. 

 

Compensation and Benefits

A candidate’s pay within the range will depend on their skills, experience, education, and other factors permitted by law. This role may also be eligible for performance-based bonuses subject to company policies. In addition, this role is eligible for the following benefits subject to company policies: medical, dental, vision, pharmacy, life, accidental death & dismemberment, and disability insurance; employee assistance program; 401(k) retirement plan; 10 days of paid time off per year (some positions are eligible for need-based leave with no designated number of leave days per year); and 10 paid holidays per year.