苹果Senior SAP HANA Database Performance Engineer

工作描述

Qualifications
Minimum Qualifications
8+ years in database or performance engineering, with demonstrated ownership of SAP HANA performance in production. 
Deep hands-on SAP HANA expertise: column store internals, delta merge, partitioning, compression, memory management, and the execution model. 
Proven SQL tuning skill with evidence. You can walk through a plan you changed, the measurement that justified it, and the before and after result in CPU, elapsed time, and records processed. 
Practical command of the diagnostic toolset: PlanViz, expensive statements trace, SQL plan cache, HANA system monitoring views, thread and memory views, ST05, SAT and STAD. 
Experience separating database causes from application, network, and infrastructure causes, and defending that separation with data. 
Linux and infrastructure diagnosis at the database layer: CPU, memory, NUMA, I/O and storage latency, network throughput. 
Experience with HANA high availability and disaster recovery, including System Replication and failover testing. 
Experience owning 24x7 production database incidents, including on-call and written root cause analysis. 
Scripting ability in Python, shell, or an equivalent language for automating measurement and analysis. 
Professional working proficiency in English and Mandarin. 
Bachelor's degree in Computer Science, Engineering, Mathematics, or a related field…