Staff Post-Silicon DDR Characterization Engineer
Arm · Posted Nov 2
Semiconductor IP, energy-efficient CPU architecture, and high-performance compute platforms
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About the role
Arm's Bengaluru Silicon Characterization team validates and characterizes next-generation Arm SoCs and helps customers bring products to market. The team focuses on DDR/LPDDR memory subsystems, silicon debug, and electrical/performance margin analysis across PVTF conditions. This role defines and executes post-silicon DDR characterization plans, debugs complex memory issues, and develops automation to improve silicon power, performance, stability, and reliability.
What you will do
- Define and execute DDR/LPDDR post-silicon characterization plans covering performance, power, functionality, electrical margins, and reliability.
- Identify, reproduce, debug, and drive root-cause analysis of complex silicon and memory subsystem issues.
- Perform eye margining, timing analysis, voltage/frequency shmoo characterization, and electrical measurements using MSOs and other laboratory equipment.
- Analyze DDR/LPDDR controller, PHY, and system-level behavior to identify performance bottlenecks and operating limitations.
- Develop reusable Python/C++ automation for characterization, instrumentation, data collection, and reporting.
- Collaborate with Arm architecture, design, PHY, firmware, verification, and platform teams to resolve silicon issues and improve characterization methodologies.
- Provide technical leadership, mentor engineers, and communicate characterization findings and recommendations to stakeholders.
Skills used in this role
What the employer is looking for
- Bachelor's degree in electrical/Electronic Engineering, Computer Engineering, or a related field, or equivalent practical experience. Master's degree preferred.
- Minimum of 8 years of strong hands-on experience in post-silicon DDR/LPDDR characterization, validation, silicon debug, and root-cause analysis of complex memory subsystem issues.
- Good understanding of DDR4/DDR5 and/or LPDDR4/4X/LPDDR5/5X architectures, memory controllers, PHY operation, training, calibration, and timing requirements.
- Experience identifying, reproducing, and debugging complex silicon bugs, including memory instability, training failures, timing issues, and data corruption.
- Hands-on experience using Mixed Signal Oscilloscopes (MSOs), high-bandwidth oscilloscopes, logic analyzers, and other laboratory debug equipment.
- Experience with DDR/LPDDR eye margining, Vref characterization, voltage/frequency shmoo testing, and timing margin analysis.
- Ability to characterize silicon power, performance, reliability, and operating limits across PVTF conditions.
- Strong programming and automation skills in Python, C/C++, Arm assembly, or related scripting languages.
- Strong analytical skills with the ability to investigate complex failures, interpret measurement data, and communicate technical findings.
Preferred qualifications
- Experience with DDR4/DDR5/DDR6, LPDDR4/4X, LPDDR5/5X, or related memory technologies.
- Knowledge of High Bandwidth Memory (HBM), Package-on-Package (PoP), on-package memory, or advanced memory packaging.
- Understanding signal integrity, power integrity, jitter, noise, DQ/DQS timing, and high-speed interface behavior.
- Experience characterizing memory bandwidth, latency, read/write performance, power consumption, and stability.
- Experience with DDR controller/PHY debugging, ECC errors, memory stress testing, and failure analysis.
- Familiarity with Arm-based SoCs, CPU memory hierarchies, interconnects, and system-level memory behavior.
- Experience developing automated characterization frameworks, performing data analysis, and correlating silicon results with design or manufacturing test data.
Benefits and support
- hybrid working arrangements
About Arm
Arm architects, develops, and licenses high-performance, energy-efficient CPU products and related semiconductor intellectual property. Its technology powers over 99% of the world's smartphones as well as a vast array of devices ranging from tiny sensors and wearables to cloud-scale AI supercomputers.
- Industry
- Semiconductors
- Company size
- 8000+ employees
- Founded
- 1990
- Location
- Cambridge, United Kingdom
- Funding stage
- Public Company
Funding
Public Company
- 2023-09-14IPO$5.23B
Leadership
Chief Executive Officer, Board Member
Executive Vice President and Chief Financial Officer
Executive Vice President, Chief Legal Officer and Head of Corporate Development
Executive Vice President and Chief Commercial Officer
Executive Vice President and Chief Architect
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