Job Description
Our partner is looking for a Senior Signal Integrity Engineer to own signal integrity across package, board and system level interconnects for advanced compute hardware.
This is a senior individual contributor role with architectural influence. You will help define SI budgets and design constraints, not simply verify completed layouts, and will work closely with package, PCB, PHY, memory and system teams.
Location: Barcelona, Spain, HybridLevel: Senior
Responsibilities

Own signal integrity from silicon package through board and system channel
Define loss, crosstalk and jitter budgets
Perform pre layout feasibility studies
Guide routing, stackup and layer assignment
Run 3D EM extraction of package and board structures
Perform statistical and time domain channel simulation
Own PCIe Gen6 channel design and compliance margining
Support LPDDR interface timing and bus level closure
Define model quality requirements for passivity, causality and DC accuracy
Set SI requirements for package, OSAT and component vendors
Coordinate models with PHY, DRAM and package suppliers




Correlate simulations with VNA, TDR and silicon measurements
Support board bring up and SI debug
Automate analysis and post processing with Python

Requirements

8+ years of signal integrity experience
Background in high speed digital systems
Strong package level SI experience
3D EM extraction experience
HFSS, SIwave, Clarity, Sigrity, Keysight or equivalent
Proven SerDes channel closure experience
PCIe Gen5, Gen6 or comparable interface experience
DDR5, LPDDR5, LPDDR6 or HBM experience
Strong IBIS and IBIS AMI knowledge
Channel simulation experience
Ability to analyse substrate stackups and bump maps
Strong understanding of loss, crosstalk, jitter and channel behaviour
Python scripting for automation and analysis

Optional / Desired

2.5D, interposer or chiplet package design
Advanced substrate experience
Material characterisation
Measurement and simulation correlation
OCP rack platform exp

📌 Senior Signal Integrity Engineer (Barcelona)
🏢 Hireroo
📍 Barcelona