Staff Post-Silicon DDR Characterization Engineer

Job Title

Staff Post-Silicon DDR Characterization Engineer

Role Summary

Join Arm's Bengaluru Silicon Characterization team to validate and characterize next-generation Arm SoCs. The role focuses on post-silicon characterization of DDR/LPDDR memory subsystems across process, voltage, temperature and frequency (PVTF) to identify and resolve silicon-level memory issues and improve power, performance, stability and reliability.

Experience Level

Senior - minimum 8 years of hands-on post-silicon DDR/LPDDR characterization, validation and silicon debug experience.

Responsibilities

Execute and lead post-silicon DDR/LPDDR characterization and debugging; collaborate with cross-functional teams and mentor engineers.

• Define and execute DDR/LPDDR post-silicon characterization plans for performance, power, functionality, electrical margins and reliability.
• Identify, reproduce 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, high-bandwidth oscilloscopes and other lab equipment.
• Analyze controller, PHY and system-level memory behavior to identify performance bottlenecks and operating limits.
• Develop reusable automation (Python/C++) for instrumentation, data collection and reporting.
• Collaborate with architecture, design, PHY, firmware, verification and platform teams to resolve issues and improve methodologies.
• Provide technical leadership and mentor junior engineers; communicate findings and recommendations to stakeholders.

Requirements

Key technical must-haves and desirable skills.

• Must-have: 8+ years of hands-on post-silicon DDR/LPDDR characterization, validation, silicon debug and root-cause analysis of memory subsystem issues.
• Must-have: Strong understanding of DDR4/DDR5 and/or LPDDR4/4X/LPDDR5/5X architectures, memory controllers, PHY operation, training, calibration and timing requirements.
• Must-have: Experience using mixed-signal/high-bandwidth oscilloscopes, logic analyzers and other laboratory debug equipment.
• Must-have: Experience with eye margining, Vref characterization, voltage/frequency shmoo testing, timing margin analysis and PVTF characterization of silicon.
• Must-have: Strong programming and automation skills (Python, C/C++, scripting or similar) and ability to analyze measurement data and communicate technical findings.
• Nice-to-have: Experience with DDR6, HBM, PoP or advanced memory packaging; signal and power integrity, jitter/noise analysis, and high-speed interface behavior.
• Nice-to-have: Experience characterizing memory bandwidth/latency/power, ECC and controller/PHY debugging, automated characterization frameworks, and familiarity with Arm-based SoCs.

Education Requirements

Bachelor's degree in Electrical/Electronic Engineering, Computer Engineering, Computer Science or a related field, or equivalent practical experience. Master's degree preferred.

About the Company

Company: Arm

Headquarters: Cambridge, United Kingdom

ARM is a global leader in semiconductor and software design, driving innovation in computing technology. The company specializes in designing processors and systems that provide the essential building blocks for electronic devices. ARM's architecture is widely used in smartphones, servers, and IoT devices, and its collaborative culture fosters bold thinking, diversity, and high-impact benefits for its talented workforce.