• 15 years of outstanding experience in software, service, and financial industries to architect, develop, and implement Database, Data Replication, HA, Geo-HA, DR, ETL, DW, Cloud, and BigData solutions. • Led numerous projects on design, development, and integration for databases and system solutions. • Hands-on DBA/Architect expertise in Oracle 11g/10g/9i/8i/8, Cassandra, MsSQL, and MySQL. • Expert in HA and Geo-HA solution with Oracle 11g/10g RAC, GoldenGate, DataGuard, VCS, etc. • Proficient at database performance tuning, backup/recovery, and health monitoring for Oracle and Cassandra NoSQL database. • Solid experience with SQL, Oracle PL/SQL, T-SQL, DB2 SQL PL, Shell Script, Ruby, Python, etc. • Multi-OS platform experience: Linux, UNIX (Solaris, HP-UX, and AIX), Windows, and VMware. • Experience in design and implementing ETL strategies using scripts, ODI, SQL, PL/SQL, SSIS, and BO. • Excellent customer experience and the drive to accomplish the projects efficiently and effectively. • Experience in deploying and configuring BO, WebLogic 11g/9/8, Apache, PeopleSoft, Siebel, SSL, etc. • Familiar with Hadoop open source stack including HDFS, Ambari, Hive, Pig, Hbase, and others. • Excellent teamwork, leadership, communication, and people skills • Certified Oracle and DB2 UDB DBA.

Principal DBA @ Played architect role in design, development, and deployment of Oracle and Cassandra database solutions for ItsOn cloud-based service platform. • Own and lead Oracle RAC and Caasnadra design, deployment, and suport in production, development, QA, performance, and staging environment. • Implemented and managed the geographical distributed database system with Oracle RAC and two-way active-active GoldenGate data replication. • Developed and implemented admin scripts to monitor and manage database events and performance • Deployed and managed NoSQL database Cassandra to process large amount of mobile usage data. • Performed Oracle BI adminstraton and developed ETL data mapping via ODI studio. • Participated design and implementation of new analytic platform based on Cassandra and Hadoop stack. From March 2014 to Present (1 year 8 months) Redwood City, CADatabase Administrator @ • Managed and supported Bank’s mission critical Oracle and MS SQL databases, including 24x7 production support to ensure the high availability and serviceability of Bank business and applications. • Conducted setup, backup/restore, health monitor and daily DBA duties for Production and development environment. • Deployed and supported SSIS/SSRS/SSAS, BusinessObject, QRM, and other business applications. • Managed database security auditing using Oracle Audit Vault and Idera SQL compliance manager. • Implemented and supported HA and DR solution using VCS, EMC replication, and SQL mirroring. • Performed troubleshooting for database related issues and performance issues. From February 2012 to March 2014 (2 years 2 months) San Francisco, CASr. Tech Lead / Principal DBA @ • Played architect and leadership role in design, development, and delivery of database and deployment solutions for major worldwide mobile carrier customers with InnoPath Mobile ActiveCare Server Suites. • Architected, developed, and implemented HA and Geo-HA solution to achieve the high availability and geographical DR capability for InnoPath SmartCare product solution, using Oracle 11g/10g RAC, DataGuard, Cisco CCS/F5, and VCS on HP, Solaris, and Linux platforms. • Deployed and configured dozen of Oracle 10g/11g RAC database systems for different customers. • Conducted numerous performance troubleshooting and tuning for production databases and systems. • Received 2010 "President's Leadership Award." • Info: InnoPath provides software and solutions to manage mobile devices. From July 2005 to January 2012 (6 years 7 months) Sunnyvale, CaliforniaSr. DBA (Oracle/DB2/MSSQL) @ • Successfully managed large, high performance 24x7 e-business databases using Oracle, DB2 UDB, and SQL Server for more than 20 high-profiled companies. • Deployed and administered HA system using Oracle/DB2, Veritas cluster, RAC, and DataGuard. • Troubleshot and resolved fault and performance issues for database and application systems within SLA. From August 2004 to July 2005 (1 year) San Francisco Bay AreaSr. Oracle/DB2 DBA Consultant @ • Supported Oracle and DB2 UDB databases for Lawson Financials and Data Warehouse (2.5 TB). • Migrated PeopleSoft and Lawson application databases to a new AIX server with minimum downtime. • Tuned PeopleSoft SQR/SQL, reducing one report execution time from 20 minutes down to 2.5 minutes. From June 2003 to July 2004 (1 year 2 months) Ann Arbor, MISr. DBA (Oracle/DB2/SQL) @ • Deployed and administered Oracle 8/8i/9i, DB2 UDB, and SQL server databases on Unix, Linux, and NT/2000 to support ERP, CRM and Web apps for over 100 high-profile customers. • Conducted and coordinated database design and deployment by working closely with customers and deployment engineers. • Deployed and administered the corporate Siebel CRM system with DB2 UDB database on Windows NT. • Designed and developed ETL strategies and data mappings for corporate Oracle Data Warehouse. From March 2000 to May 2003 (3 years 3 months) Santa Clara, CAOracle DBA and Developer @ • Performed Database Administration for multiple Oracle 7/8 and OLAP databases on HP-UX and Solaris, which supported Sales Data Warehouse, EIS (OLAP) systems, and Internet Sales. • Designed and developed ETL programs to extract, transform, and load data for an Oracle data warehouse using UNIX Shell scripts, Awk utility, PL/SQL, and Oracle SQL Loader. • Conducted logical/physical design and development of new databases using Designer/Developer 2000. From February 1997 to February 2000 (3 years 1 month) Cleveland, Ohio

MS, Computer Sciences @ Kent State University From 1995 to 1997 BS, Railroad Engineering @ Southwest Jiaotong University Bill Chen is skilled in: Oracle, Databases, Oracle RAC, Performance Tuning, GoldenGate, RMAN, Analysis, Strategic Planning, Administration, Operation, Grid Control, Database Design, Data Warehousing, DataGuard, ASM, SQL Server, Cassandra, OBIEE, ETL Tools, ElasticSearch, Database Security, Hadoop, Big Data