Memory Reliability Engineer

Project

Work done for a product or program.

• Design and execute reliability qualification plans to JEDEC JESD47, JESD22 and JESD218/219 and, for automotive, AEC-Q100 with grade-specific stress conditions.
• Characterise DRAM retention distributions, weak-bit populations and variable retention time behaviour and derive refresh interval specifications.
• Characterise NAND endurance and retention trade-offs across program/erase cycling, read disturb and cross-temperature effects.
• Design and run RowHammer and passing-gate-effect vulnerability testing, quantify bit-flip thresholds and validate mitigations such as TRR, RFM and PRAC.
• Run accelerated stress testing including HTOL, HTS, THB, temperature cycling and ESD/latch-up, and apply Arrhenius and voltage acceleration models.
• Compute failure rates in FIT and DPPM from stress data with statistical confidence bounds and maintain the reliability model for each product.
• Investigate infant mortality and burn-in effectiveness and optimise the screening strategy against field failure data.
• Perform failure analysis coordination for reliability rejects and drive corrective actions into design or process.
• Support soft error rate evaluation, including neutron and alpha testing for DRAM and SRAM used in high-reliability applications.
• Author qualification reports and reliability sections of customer quality documentation and support customer reliability audits.

Function

Work that keeps the discipline running: methods, tools, suppliers and people.

• Maintain the quality management system, its procedures and its audits.General
• Track quality metrics and report trends to management.General
• Keep the organisation current with the standards it works to, such as automotive, safety or security standards.General

Project

1. Produce and hand over the role's key deliverables
   • Reliability qualification plan and signed qualification report
   • Retention and endurance characterisation datasets with derived specifications
   • RowHammer vulnerability assessment and mitigation validation
   • FIT and DPPM reliability model per product
   • Accelerated stress test results with acceleration factor justification
   • Customer reliability documentation and audit responses
2. Qualify the productGeneral
   • Write the qualification plan
   • Run stress tests and analyse the results
   • Approve the qualification report
3. Handle quality issuesGeneral
   • Analyse failures
   • Drive corrective and preventive action
   • Respond to customers

Function

1. Run the quality systemGeneral
   • Maintain procedures and records
   • Prepare for and run audits
2. Report and improveGeneral
   • Track quality metrics
   • Lead improvement projects