WEI DAVID ZHANG (Senior Architect)

FOCUS:                 solution involves BigData, open source and mobile technology.

SKILLS:

Database:SKILLS:

Database:              TeraData, MSSql, Oracle, Mongodb, Mysql, postgresql, hive, HBase

Language: C#, java, XML,VB, ASP.Net, DotNet

Tools: ColdFusion, Erwins, ERstudio, power designer, Aster / mapreduce, hadoop, WCF, WPF, XCASE, Redgate, SSRS, SSAS, SSIS, visual Studio, Eclipse, pentaho, talend

EMPLOYMENT                           

T-Mobile(Wireless/Telecom)                                                                                                                      3/2012-Now

Senior Database solution Architect:

              • design ETL processes centered around hadoop platform, use various tools in Hadoop ecosystem (Hive, Oozie, HBase, Pig,Sqoop)

• hands on with all data warehousing components (Data acquisition, ETL, data modeling, profiling and reporting)

• engage in big data initiative to incorporate Hadoop with external sources (i.e. postgresql, mongodb and teradata) to maximize performance and create enterprise level data store.

• proficient in java for map reduce

              • manage and communicate  effectively with business users, development and test teams to create datalake on  hortonworks platform for engineering data, i.e. drop calls, network traffic, to pinpoint performance bottleneck

 

Quality in Motion(Wireless Software and Consulting)                                                                        5/2011-3/2012

Manager of development:

•oversee development of mobile payment solution for local tourism attraction on kiosk platform

•interact with payment processing vendor for credit card processing for such platform, to conform with vendor's technical specification and security requirements

•maintain device configuration oracle database (package procedure) for telecom client.

CoinStar/Redbox (Automated Kiosk Rental)                                                                                    3/2010-5/2011

Senior database developer in Scrum/agile team:

responsible for ETL processes and replication of SQL 2005 and 2008 production database to support data warehouse, lead and mentor team members on C# and SQL best practices, automate build/release process, and communicate with business users in different areas.             

 

Myfamily.com/Ancestory.com(Social Networking web 2.0 site)                                                                   8/2006 – 3/2010

SQL architect: design and create database model. Implement scalable SQL 2005 Database (2TB) for family-oriented social                                   networking web site, to support 5 million+ users. Create complex tables/ views structure to support business requirements such as site creation, membership, image upload etc. Use C# to create automated tool to generate stored procedures, increase efficiency and reduce development time.

 

Constantly monitor SQL performance via SQL profiler and execution plans, create composite index based on search patterns.           Migrate legacy data from previous database, due to the complexity of the business logic, I write a C# executable file to implement business rule checks and execute stored procedures.

 

CSGOPENLINE(Call Center Software)                                                                                                               11/2005 – 8/2006

Data Architect / Consultant: design and create Database model for SQL 2005 DB for high volume Call Center CRM Application in 3-tier environment, create business layer to provide service methods for UI developers to consume.

 

QUALIFACTS.COM (Enterprise Software and HealthCare solution)                                                 07/2003 –11/2005

C# application developer /SQL architect: design and create data model based on business requirement and use case. Create database objects: table, view, procedures, and apply index to support efficient query, for psychiatric care services that support hundreds of concurrent users, and covers areas such as appointment, billing, diagnosis of episodes, and adjudication of medical claims. Lead developer for n-tier application.

 

PERKINS COIE LLP.              (Legal)                                                                                                                12/1998-07/2003

SQL Application development: create, design and implement SQL database to track stock options or bridge loans to startups. Create data warehouse for internal accounting database (CMSOPEN), to summarize the billable hours for attorneys, which becomes the basis of calculating partners’ compensation.

                                                       

MICROSOFT CORP.    (Software)                                                                                                     09/1997-10/1998

Associate financial analyst: Use VBA for Access to automate internal reporting process, and built budgeting application for Desktop Application Division (3,000 personnel). Proficient in SQL 7, VB to develop database applications for headcount tracking and analysis.

             

IDX INC /GE healthcare (Software)                                                                                                  11/1995-09/1997               

Staff accountant: Planned and built expense / headcount budget model and revenue forecast for a $50 million software / healthcare information system company. Automate reports using VBA for Access, Excel, improved efficiency and accuracy.

 

EDUCATIONSept 94 - Jun 95                                                                                                                 Master of Accounting                                                                       GONZAGA UNIVERSITY Spokane, WA             

Jan 92- May 94 Bachelor of Science(Accounting) DELAWARE STATE UNIVERSITY Dover, DE

LANGUAGESChinese (fluent), Cantonese (fluent), English (fluent)

HONORS            Dean's list, Magna Cum Laude (Delaware State University), AICPA

ACTIVITIESNational Dean's List of 1993, Agile training (SolutionIQ)