WORK EXPERIENCE:

Confidential, New York

Data federation / virtualization Architect

Responsibilities:

• Collaborate with application team to design data virtualization solution
• Design and integrate security model in CIS with existing Confidential infrastructure
• Create various resources in CIS, such as View, Parameterized Query, Procedure, Custom Functions, Packaged Query, Package, Trigger, Custom Java procedure, XQuery Transformations, Policy, Caching, Web services, etc.
• Provide advisory support to teams on data virtualization solutions.
• Document best practice on data virtualization development in CIS
• Performance tuning on data virtualization implementation in CIS
• Develop utility in Perl, Shell Script and Java to automate data source introspection, object creation, resource deployment, entitlement management and monitoring.
• POC new features in CIS and other data virtualization solution on the market

Technologies: Cisco Information Server(Composite) Studio, CIS Soap API and utility, SQL, DB2, Sybase, Greenplum, Teradata, KDB, Hadoop, Perl, Java, Spring, Soap and Restful services, Shell scripting, Perforce, Git, Kerberos, SSO, Https, Jboss data virtualization, Windows and Linux.

Confidential

Senior Data Virtualization Engineer

Responsibilities:

• Provide engineering and support for the Confidential CIS plant (approx. 40 servers running CIS server software).
• Design and develop CIS workbench, dashboard and deployment tool.
• Troubleshoot and support problems with CIS Studio and CIS server.
• Work with new internal clients to onboard them with using CIS and the Morgan CIS infrastructure.
• Provide guidance to teams on data virtualization and federation.
• Provide on - call level 3 support to resolve issues after hours.
• Provide and guidance to operational L2 and L3 personnel in CIS.
• Unix and Powershell scripting for maintenance tasks.
• C#, Java and Perl development for maintenance and automation utilities in the plant.

Technologies: Cisco Information Server (CIS/Composite), C#, WPF, WCF, Perl, Java, Eclipse, Spring, AngularJS, Perl, Soap and Restful services, DB2, Oracle, Postgres, Shell scripting, Perforce, Git, Kerberos, SSO, Windows and Linux.

Confidential

Technical lead

Responsibilities:

• Design, implement and maintain new and existing applications.
• Working with the Business side to understand their needs and define how our products and infrastructure will meet those needs.
• Research and assess new technologies, vendor and open source libraries, implement proof-of-concept prototypes.
• Work with other internal infrastructure teams to develop, build, manage and problem-solve.
• Work extensively with Business Objects Enterprise Server SDK to develop tooling.
• Investigate, locate and fix coding defects for existing applications.
• Provide advisory support to teams on BI solutions.
• People management, project management, recruiting and mentoring.

Technologies: Visual Studio .NET 2010, C#, Asp.net, Java, Eclipse, Spring, Junit, Agile, Scrum, Web Services, SOAP, REST, Perl, Angular JS, DB2, Sybase, SQL Server, XML, Json, HTML5, Perforce, Git, Jira, Business Object, Informatica, Qlikview, Tableau, Hadoop, Cloudera, MapR, Data warehouse, ETL, Windows and Linux.

Confidential

Led

Responsibilities:

• Initiated and managed two summer interns and pre-trainee to work on Confidential development.
• Led the design of software architecture and components and deliver implementation to specification in a timely fashion.
• Designed and implemented tables, views, stored procedures, functions, triggers and jobs in support of application development.
• Designed and implemented WCF web services to query the data based on different search criteria.
• Designed and implemented a Silverlight GUI application to facilitate complex user query composition and requirement transfer to different layers.
• Supported and added new features to Legacy Confidential Java applications.
• Recruited and managed an intern to work on this project.

Technologies: Visual Studio .NET 2010, C#, Silverlight, NHibernate, LINQ, WCF, XAML, Jave, JSP, Perl, DB2, Sybase, Soap, REST, XML, Json, HTML, Perforce, Jira, Windows and Linux.

Confidential

Responsibilities:

• Designed and developed outlook plug-in to pop up friendly reminder or block confidential information going out the firm based on pre-defined policies.
• Designed and developed a policy engine that pushes policy to various downstream applications.
• Designed and developed a Confidential library for tagging various types of documents, such as Word, Excel, PDF, etc…
• Apply Agile methodologies through full life cycles of the development.

Technologies: Visual Studio .NET 2008, C#, Window Form, Agile, Scrum, Multi-threading, Serialization, web service, SQL Server, XML, AFS, Kerberos, Siteminder, Exchange, Perforce, Windows and Linux.

Confidential

Responsibilities:

• Manage and drive the weekly team syncup call and agenda.
• Manage risks, alerts, and change requests of Live-feed plant.
• Designed and implemented live-feed work flow.
• Developed API for application owner to submit archive feed.
• Set up alerting to watch system health.
• Work on SearchArchive product to make archive data available to firm wide users.
• Played a key role in daily call with vendor by discussing key projects and items on the agenda.
• Leverage team knowledge to help other team members further up to speed with new areas.

Technologies: Perl, Shell scripting, Autosys, Crontab, Idol search engine, Lucene search engine, Visual Studio .NET 2010, C#, ASP.NET, Git, Windows and Linux.

Confidential

Senior Software Developer

Responsibilities:

• Design, develop, implement and documentation models, interfaces, components and software applications of a high availability public safety system.
• Participate in the design of software architecture and components and deliver implementation to specification in a timely fashion;
• Contribute to the R&D processes improvement as well as development environment.
• Coordinate with internal teams to integrate CAD with other public safety applications.
• Participate in the maintenance and support of existing software products.
• Develop tables, views, stored procedures, functions, triggers and jobs in support of application development.
• Perform physical database design in response to requirements and respecting the product architecture
• Create database build for CAD database upgrade and clean set up.
• Provide support of internal databases as requested (administration, backups, recovery, import & export).
• Troubleshoot CAD and database related problems that occur during development, testing and in the field.

Technologies: Visual Studio .NET 2005, C#, VB.NET, ADO.NET, ASP.NET, Window Form, Multi-threading, Serialization, web service, Remoting, Reflection, Oracle, SQL Server, XML, XSL, HTML, JavaScript, Crystal Report, Windows and Linux.

Confidential

Senior Software Developer

Responsibilities:

• Create a framework to extracted and integrated data from multiple databases of DJS products, including Law and Record Management System (SQL Server), Criminal Management System (Oracle) and FullCourt System (Informix).
• Applied Lucene search engine to create full index on multi data source and provided rich search functionalities.
• Provided a rich presentation GUI, through .NET framework, to facilitate complex user query composition and requirement transfer to different layers.
• Designed and implemented a role-based security control solution for EQ.
• Created test plans for integration and system test, and performed the tests.

Technologies: Visual Studio .NET, C#, ASP.NET, ADO.NET, Web Services, SOAP, VSS, Lucene search engine, SQL Server, Oracle, Informix, XML, XSL, HTML, JavaScript, IIS, Active Directory, and Window XP.

Confidential

Advanced Workstation for Windows (AWW) Simulator

Responsibilities:

• Created the requirement book and software requirement specification.
• Designed and implemented AWW Simulator based on the Model-View-Controller (MVC) application architecture. A slave works as multiple AWW terminals to received messages from PCAD server while the master performs diverse computation on the AWW messages and works as the GUI of AWW Simulator.
• Handled the communication between the master and slaves by socket.
• Planed and performed the unit test, integration test and system test on Tandem server
• Built the release and created user guide.

Technologies: Visual Studio .NET, C#, ADO.NET, Socket programming, TCP/IP, Multi-threading, Rational ClearCase, Rational ClearQuest, Rational Rose, OutsideView, Tandem, Multi-homing and Window XP.

Confidential

Responsibilities:

• Maintain the legacy base code and develop new features by following a three-tier architectural model with components physically distributed across a Wide Area Network (WAN) linking one or more Local Area Networks (LANs) of computers into a coherent system.
• Maintain and adjust the Oracle databases in the Montreal lab (deployed on Windows Server 2003, RedHat Linux and Sun Solaris). This includes updating the software, creating databases, performing data migration, backup and restore activities.
• Prepare server-side installation/deployment script
• Provide support and advise the development team on database related issues.
• Assist the PSA Customer Support team on investigating problems reported by end customers, which include database tuning, configuration and performance optimizations, expanding the Oracle table space, re-indexing, investigating deployment issues across various Oracle releases, etc.

Technologies: Visual Studio 6.0 and .NET, VB, C++, VB.NET, C#, ADO.NET, COM, ActiveX (OCX), DHTML, Crystal Reports, Oracle 9i/10g(Functions/Procedures, Triggers, Alerts), ODBC, PL-SQL, RDO, ClearCase, ClearQuest, Distributed computing, Window XP, Win2003 server, Linux and Solaris.

Software Developer

Confidential

Responsibilities:

• Designed and developed a big social-networking website that provides a content-driven collection of communities across universities.
• Maintained the current websites as well as implemented new features for new and existing sites.
• Developed a module to extract away messages of users from AOL Instant Messenger.
• Designed and developed e-mail notification module that automatically and simultaneously checks and retrieves user’s email messages from Campusnetwork.

Technologies: PHP, Smarty, Perl, Mysql, ADOdb, HTML, Javascript, CSS, IPTABLES, regular expressions, XML, SOAP, Visual Studio .NET, C#, Socket, Apache, Linux and Window XP.

Contract software developer

Confidential

Responsibilities:

• Designed a color histogram and texture based dual-pattern matching search algorithm to achieve enhanced search result.
• Embedded machine-learning algorithm to obtain an improved image match curve over time.
• Implemented an adaptive multi-dimensional SR tree for search-optimized image archiving, designed database schema for semantic-level image object representation storage.
• The back-end server, written in C++, combines image feature generation and matching logic.
• Created a rich web interface in ASP.NET for similarity search and image classification.

Technologies: C++, ASP.NET, C#, Visual Studio .NET, SQL Server 2000, IIS and Window NT

Confidential

Responsibilities:

• Designed and implemented an inverted index generator based on B+ tree structure, which was written in C++ and ran in the back-end server.
• Applied strategies and algorithms to optimize the performance of the search engine in time and space.
• Integrated the search engine with the Filter & Crawler module and Semantic Header Generation module in CINDI via implementing a C++ monitor program over MySQL and file storage.
• Developed a rich web interface using PHP to provide complex user query in word, phrase and sentence level.

Technologies: C++, Mysql, PHP, Shell Script, Aparch and Linux.

Oracle DBA and Application developer

Confidential

Responsibilities:

• Created library database model, draw ER diagrams, and created database schema.
• Setup oracle 8i, 9i on SUN Solaris with various configurations and tuned performance at each time.
• Created backed up and restore plan for Oracle while executing it in needed.
• Performed SQL tuning and database optimization.
• Provided helpdesk and troubleshooting.
• Provided staff regarding available data, database structure and their suggested usage.
• Created the library web site, including an online catalog search system.

Technologies: Oracle 8i/9i, SQL*PLUS, PL/SQL, Store procedures, Triggers, ASP, HTML, Javascript, WINDOW NT and SUN Solaris.

Confidential

Responsibilities:

• Designed, implemented, and tested the library information system including book ordering subsystem, book catalog subsystem, book circulation subsystem, and book search subsystem.
• Designed the database model.
• Initiated and deployed various data feeding between LIS and standard publisher databases.

Technologies: Visual Studio 6.0, VB, COM, ODBC, DSN, SQL Server 6.5, T-SQL, Store procedures, and WINDOW NT.