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, Hybrid
Level: 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

• M

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