Junhua Yuan Email & Phone Number

Mountain View, Ca, Us

San Jose, California, Us

Princ Software Engineer ( SRE @ Performance , DBE) in CPE• Performance Data set and test case design Performacne test strategy design Performance test report templete Performacne Dashboard design• Setup Performance test environment(OpenStack and AWS) and Monitoring system Use openstack API and shell script create automation setup scripts. Ues Puppet master amd shell script create automation deploy EPMPi,Nagios, Statsd, Collectd, graphite scripts Setup and customize Cacti.• Couchbase benchmark test and Tuning up Integrate Couchbase clinet and Jmeter to test Couchbase server performacne. Tuning Couchbaes server configation file.• RabbitMQ benchmark test and Tuning up Integrate AMPQ clinet and Jmeter to test RabbitMQ performacne Tuning RabbitMQ configation file.• Elasticsearch benchmark test and Tuning up• JVM profiling test and Tuning up Setup Jprofiler environment and templete Write Jmeter script for EPMPi rest APIs Tunning the JVM heap size, GC rule base on the Mix simulant traffic. Run Jprofiler to find out Memory leak, high cpu usage, slow response function. • EPMPI scale system Performance and SRE Benchmark test for find out the Max system DiskIO, Network latency, Max TCP/IP connection. Write Jmeter test case for simulate production traffic. Run step load test for find out the best load for whole system. Run baseline test for get EPMPi system baseline performace date. Tuning up EPMPi appliction configuration file. Write automation script for create test report, reset environment.• Production capacity plan and SRE support Production capacity plan design Production cost plan Production SRE support• Perfomance Dashboard Integrate Jmeter test result and monitoring system. • Database backup and restore Couchbase, Elasticsearch, aurora

Sunnyvale, Ca, Us

Performance Engineers for GFE NOC platform , GD platform•GFE NOC platform Benchmark, Capacity, Reliability, Stability,Performance testing.•GC,Relay platform Benchmark,Performance testing.•Oracle 11g upgrade testing, Benchmark, Performance testing.•Sql server Benchmark,Performance testing.•APNS, MPNS, GCM Performance testing.•Monitoring system set up,maintenance.•Unix,Linux,Windows server Benchmark testing and turning up.•Performance Test Lab setup,maintenance.•Design,create performance testing tools and Automation tools.

Bangalore, Karnataka, In

Built up and maintained Obopay Performance Testing platform, Analyzed testing results, researched on the bottle-necks of our system/application/database and provide tuning up suggestion/solutions; Built/setup simulators for Obopay partners’ services used for performance testing; Setup and Configuration Automation for Weblogic and Apache; System Monitoring and Operation Dashboard; Production and QA support. Performance Testing database setup, maintenance and turning up; Production/Pre- Production/QA/DEV Databse DBA backup; Obopay production web contents and application/services/Database releases; production 7* 24 support on a rotated base.•Set up Performance Testing platform, Install and config weblogic/apache/oracle10g cluster, set up System Monitoring, build test case, test module, and produce report.•Analyzed testing results, find out system/Database bottle-necks, provide tuning up suggestion/solutions.•Write Apache configuration automation scripts to simplify QA team’s and operation team’s effort to setup and maintains Apache environments. Write Weblogic setup/clone automation scripts to streamline and standardize BEA environment creation, maintenance, dramatically reduced the efforts needed and avoided potential human errors that could happen if these automation scripts are not used.•Do Obopay production web contents and application/services/Database releases, production 7* 24 support on a rotated base.•Developed Obopay dashboard system system/service availability, SLA and operation project status, setup and configured Cacti templates for Linux/Windows servers and firewall/switches, Installed and deployed Cacti Server for preproduction and production systems/servers health monitoring.•Oracle Lab onsite Performance testing, using oracle Exadata and Exalogic server to do Obopay transaction level performance testing•MasterCard Per-edit maintenance•Upgrade Oracle 10g Rac/linux 4.6/weblogic 9.2 to oracle 11g Rac /oracle linux 6/weblogic 11g

Be responsible for QA process establishment, system test and product release• Setup, initialize, deploy and maintain the Bugzilla system, testing servers and product server. • Be responsible for system build, unit test, integration test, bug status tracking and product release.• Be responsible for localization (for Chinese version) and data mining.• Be responsible for set up knowledge base.• Participate in establishing working process, operation policy and testing rule for QA team in China.• Provide QA process training for China engineers.

San Jose, California, Us

Maintained and resolved any issues related to WebEx Database Schema. Be responsible for product database update. Designed and developed database aspects for new features of products. Provide instruction to other develop engineers in the field of database construction, database flow and product's database logic. Involve in plan, design and execution of performance improvements for WebEx applications. Modify operation database files. Provide training to operation and other engineers• Enterprise Data Replication Project: Execution for the replication from SyBase, Infomix, MySQL to Oracle.• Designed and programmed new replication tools to replicate data from other company’s product database to WebEx DB with shell scripts, Java and SQL.• Oracle Upgrade: Upgraded WebEx database from Oracle8i to Oracle9i.• Database Full Release: Compressed specific WebEx database schema and configured Oracle system into a package to install the database on the new server.• Database Development: Designed database logic and modified schema to synchronize WebEx meeting monthly release with PL/SQL and shell scripts.• Oracle Database Migration: Designed and developed tools for database migration from Oracle to MySQL and DB2 for new customers.• ADB Tool: Implemented data replication among multiple Oracle instances with ADB tool.• DB Documentation: Wrote and updated database operational instructional manuals for DB team.• WebEx J2EE Project: as a team ported WebEx Meeting Center from PHP to J2EE. Used Erwin create new database design and make new schema to build database with PL/SQL and shell scripts. Defined database DAO for J2EE Project with SQL and Java.• WebEx DB Environment. Defined and implementation; Installed Oracle database, WebEx services and data replication tools, created and database backup scripts.• WebEx DB On-going Sustaining: Helped in resolving database problems for operation and other engineers.