Job Overview
Join Arm's Bengaluru Silicon Characterization team to validate and characterize next-generation Arm SoCs and help customers bring products to market.
As a Staff Post-Silicon DDR Characterization Engineer, you will focus on DDR/LPDDR memory subsystems, characterizing silicon across process, voltage, temperature, and frequency (PVTF) conditions. You will identify and debug complex silicon issues, analyze electrical and performance margins, and collaborate with cross-functional engineering teams to improve silicon power, performance, stability, and reliability.
Education & Qualifications
- Bachelor's degree in electrical/Electronic Engineering, Computer Engineering, or a related field, or equivalent practical experience. Master's degree preferred.
Crucial Skills & Experience
- 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.
Desired Skills & Experience
- 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.
Responsibilities
- 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.
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Use of AI in Your Application
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Recruitment Adjustments and Accommodations
At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email accommodations@arm.com. To note, by sending us the requested information, you consent to its use by Arm to arrange for appropriate accommodations. All accommodation or adjustment requests will be treated with confidentiality, and information concerning these requests will only be disclosed as necessary to provide the accommodation. Although this is not an exhaustive list, examples of support include breaks between interviews, having documents read aloud, or office accessibility. Please email us about anything we can do to accommodate you during the recruitment process.
Hybrid Working
Arm’s approach to hybrid working is designed to create a working environment that supports both high performance and personal wellbeing. We believe in bringing people together face to face to enable us to work at pace, whilst recognizing the value of flexibility. Within that framework, we empower groups/teams to determine their own hybrid working patterns, depending on the work and the team’s needs. Details of what this means for each role will be shared upon application. In some cases, the flexibility we can offer is limited by local legal, regulatory, tax, or other considerations, and where this is the case, we will collaborate with you to find the best solution. Please talk to us to find out more about what this could look like for you.
Equal Opportunities
Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don’t discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.