本文介绍了一名高级性能工程师的主要职责，包括性能实验室的管理、性能及可扩展性测试方法的实施、性能问题的解决等，并列出了所需资格条件，如计算机科学学位、丰富的Java/J2EE经验以及强大的数据库和SQL调优技能。
Principle Performance Engineer
The Principle Performance Engineer will execute a series of strategies that relate to performance tuning mission-critical J2EE applications
Duties and Responsibilities:
l Own the performance test lab, including setup of OS (Solaris 10), Oracle Database, JBoss server, Apache, Network, Load balancer, etc.
l Own the implementation of performance and scalability testing methodology and recommendation
l Work across entire engineering teams to collect performance test requirements, formulate scalable test strategies, and enforce performance testing
l Work with data center/NOC team on reproducing, resolving and preventing performance issues on production servers
l Setup monitoring and benchmarking tools on performance lab and generate reports regularly
l Setup and execute performance and scalability tests with huge number of concurrent users, profile and fix problems.
l Developing test tools used to administer performance and scalability tests.
l Profile and isolate application and architectural issues and recommend and develop resolutions.
l Provide internal and external customer documentation summarizing results of performance and scalability tests.
l Conduct research projects into applicable technologies for enhancement of application performance.
l Recommend application coding practices as required.
l Review technical specifications. Provide architecture guidance for better performance to development team.
Qualifications:
l BS degree in computer science or related field
l Expert in system administration, application server config, network config and setup
l Rich software development experience -- 4 years experience with Java or J2EE.
l Strong experience with relational databases and SQL tuning, preferably Oracle.
l Must have solid knowledge of algorithms and data structures and be able to assess trade-offs between memory vs. CPU vs. I/O vs. database load etc.
l Rich experiences on resolving multi-threading, deadlocking, JVM GC issues.
l Must be highly goal oriented, flexible and be able to adjust to changing priorities under stressful conditions and tight schedules.
l Must have excellent communication and interpersonal skills.
l An absolute self-starter. Very comfortable and highly effective when working across teams.
l Highly motivated for performance work. Can take a big project and drive it from the start to the finish with minimum supervision.
l Have rich experiences working on real, large deployment of production systems.
l Prior experience with performance Profiling/Tuning/Testing.
l Prior experience with analysis tools such as JProfiler, JConsole, etc.
Desired, but not required:
l Experience writing technical documentation.
l Experience with human capital applications.
l Experience with SaaS architectures.
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