SUMMARY:

• Highly motivated and committed to pursuing career as an expert in software development from front - end to middle-tier to back-end in diverse technologies using MS.NET plus open platform with focus on Asp.net Mvc, Single page Application using Angular.js /knockout.js, open JS libraries such as Node.js in front end, Wep api/ Wcf / Node.js in middle tier, Sql Server in back end with combination of OOD design methodology. Also, experienced with desktop development with wpf.
• Application system development experience of 25+ years in diverse business areas such as Internet Search provider, Insurance, Finance, Distribution, Manufacturing etc.
• Experience 13+ years in MS.NET/ SQL SERVER technology
• MCPD (Microsoft Certified Professional Developer:ID#6764221), MCTS
• Experience in multi platforms and technologies such as Node.js, MS.NET, SQL Server, JAVA, AS400, Mainframe,DB2 for 25+ years
• Experience Agile scrum for 5 years.
• Experience in various stages of SDLC and OOAD methodologies such as analysis, design, development, testing and implementation.
• Experience with diverse design patterns in n-tier environment
• Experience with diverse technologies such as Node.js, SPA using Angular.js /Knockout.js, ASP.NET MVC, ASP.NET, WCF/Web service, WPF/ Silverlight, Entity Framework, JQuery, SharePoint, High Performance clustering, Azure Clouding. Mobile Web.
• Experience with project lead, Architect.
• Good knowledge on mobile App development in Windows Phone, Android.
• Enjoy system development with focus on team synergy
• Zest for learning and applying new technologies

TECHNICAL SKILLS:

Languages: Javascript, C#, VB.NET, JAVA, C++, RPG, COBOL

Technology: Agular.js/ Knockout.js, Node.js with multiple JS modules, Twitter bootstrap, JQuery, ASP.NET MVC 2,0/3.0/4.0, ASP.NET 4.0/3.5/ 2.0 /1. x, Web Api, WCF/ Web Service / SOA, Silverlight /WPF/ MVVM, Entity Framework/ ADO.net, Unity, Spring.net, Moq, Rhinomock, NUnit, SharePoint2007, BI (SSRS/ SSIS/ SSAS), Html5/ CSS3, Windows Service, MSMQ, Azure Cloud, HPC, Windows mobile App/Web, Android App

DBMS: Mongdo DB, MS SQL Server 2012/ 2008/ 05/ 00 , DB2

TOOL: /Methodology: Agile/Scrum, Waterfall, Github source control, MS Team Foundation Server, MS Visual SourceSafe, Source Gear Vault, SVN, MS Visual Studio 2013/2012/ 10/ 08/ , Java Swing, IBM WebSphere 5.0

Platform: Node.js, IIS 7.0/ 6.0/ 5.0, Azure cloud, Windows HPC server 2008 R2, Windows Server 2008/ 03/ 00, Redis server, J2EE, IBM MVS/ IMS, AS400 iSeries

PROFESSIONAL EXPERIENCE:

Confidential, Los Angeles, CA

Responsibilities:

• To work remotely from home
• To develop scheduling board in Typescript and AngularJs,ASP.NET MVC etc
• To convert system according to new architecture WPF/MVVM, Typescript and AngularJs, .
• Environment: TFS, Javascript, AngualrJs, Typescript, ASP.NET MVC, Twitter Bootstrap, WPF/MVVM MS.NET Framework 4.0/4.5, C#, Visual Studio 2015, SQL Server 2012

Confidential, Irvine, CA

Responsibilities:

• To add new feature with Korean PPC component in checkout and address pages of www. Confidential .com. Some of technologies used are ASP.NET MVC, JQuery, WCF, stored procedure.
• To develop alone for statistical data feed of sales order trend and the best selling products. Some of technologies used are ASP.NET MVC, WebApi, WCF, stored procedure.
• To architecture and develop alone of Confidential email generation portal which is done by sales order, category, brand, product, sales order. Full stack of architect for repository/service/Unit of Work pattern was implemented. AngularJs, Bootstrap, ASP.NET MVC, Webapi, Untity, Entity Framework are used.

Environment: TFS, Angular JS,, ASP.NET MVC, Twitter Bootstrap, WCF, JQuery, MS.NET Framework 4.0/4.5, Unity, C#, Visual Studio 2013, SQL Server 2012

Confidential, Anaheim, CA

Responsibilities:

• To enhance Finance Dealer Web Site.
• To architect and develop alone for message portal to feed data into dealer website. AngularJs, Bootstrap, ASP.NET MVC, Webapi, Untity, Entity Framework were used.

Environment: SVN, Angular JS,, ASP.NET MVC, Entity Framework/ nHibernate, Twitter Bootstrap, Web Api, WCF, KendoUI, JQuery, MS.NET Framework 4.0/4.5, C#, Visual Studio 2012/2013 SQL Server 2008/

Confidential, Irvine, CA

Software Engineer

Responsibilities:

• To develop and maintain Apollo framework, which is an in-house developed UI framework for Local.com and LSN (Local Syndication Network).
• To heavily use SEO (Search engine optimization).
• To implement AB Test before go-live for some features.
• To constantly research and apply the cutting edge technologies such as Angular.js, Node.js, to enhance UI framework.
• To do responsive design using Twitter bootstrap,
• To apply many design patterns such as MVC, MVVM, Repository, Modular, Observer, Abstract Factory, Factory method, Proxy, Façade, Singleton, etc,

Environment: Agile/Scrum, GiHub source control, ASP.NET MVC, Entity Framework, Angular JS, Node JS, Twitter Bootstrap, Web Api, WCF, JQuery/Javascript/CSS, MS.NET Framework 3.5/4.0/4.5, C#, IIS 7.0, Visual Studio 2012/2013, SQL Server 2008/2012, SSIS, MSMQ, Redis server

Confidential, Irvine, CA

.Net, ASP.NET MVC, C# Lead/Senior Engineer

Responsibilities:

• Architecting, analyzing, designing conversion of the Batch related jobs such as Import Engine, Analysis Engine to use Windows HPC server in clustering environment including Azure cloud nodes. In development of SOA based application, TcpBinding is used.
• Work on development of Catastrophe Analysis/Forecast Modeling system to be used by clients which are mostly insurance companies.
• Using WCF, Entity Framework, develop web service components such as Account Service, Policy Service, Site Service, Structure Service Batch Service, Import Service, Report Service, Job Planner Service, etc. BasicHttpBinding, etc was used.
• Using OpenXml develop a framework to import Excel or text files into memory before bulkCopying to Sql Server tables.
• Develop UI Test Framework using WPF
• Develop Webinar platform for internal usage using ASP.NET MVC3 Razor engine, Entity Framework. Unity, Moq.

Environment: Agile/Scrum, Source Gear Vault, ASP.NET MVC 3/4, Knockout/js, Entity Framework, Unity, Moq, JQuery, WCF, WPF /MVVM, MS.NET Framework 4.0, C#, IIS 7.0, Visual Studio 2010, SQL Server 2008, Windows HPC Server, Azure

Confidential, Costa Mesa, CA

.Net, ASP.NET, C# Contractor

Responsibilities:

• As a team member, work on development of Online system (www.AAA.com ).
• Develop Online Pricing service using WCF basicHttpBinding
• Develop PriceCart, Associate, AutoPay features using RESTful service over WCF webHttpBinding, Jquery, User control, Sharepoint Webpart, MVVM.
• Develop Tempcard PDF print manager using, JavaScript, User control, SharePoint Webpart, MVVM.
• Develop UI using Jquery, User control, MVVM, SharePoint. Webpart
• Use Stored Procedure

Environment: Agile scrum, MS Team Foundation, ASP.NET 4.0, WPF /MVVM, MS.NET Framework 4.0 /3.5, C#, IIS 7.0/ 6.0, Visual Studio 2010, SQL Server 2008/ 2005, Team Foundation Server 2010, SharePoint 2007, Spring.Net, RhinoMock, Entity Framework

Confidential, Irvine, CA

.Net, ASP.NET, C# Developer

Responsibilities:

• Worked on enhancement and support of enterprise application system such as Homeowner, Auto Insurance system, etc.
• The project was for major rebuilding the whole Insurance Sales/Billing system for Homeowner Insurance product. It was developed in multiple phases. And there were multiple rollouts for many different states as the specific requirements are varied state by state.
• Depending on the phases and rollouts, the team size was between 5 and 10.
• Participated as a team member from initial phase of redesign in coordination with Business analyst and Production team. The project included redesign of WESS (Homeowner Insurance Sales system), and WEBS (Homeowner Insurance Billing system), and WEB-SIS (Insurance policy maintenance system).
• Worked on conversion of components in UI, Business logic, Data access layers using ASP.NET 3.5 from old WESS/WEBS originally developed in ASP.NET 1.1/2.0 throughout multiple rollouts.
• Worked on redesign and enhancement of business logic for Rule engines such as Qualification rule, Rate rule, Save rule, etc in the first roll-out and the subsequent.
• Applied some design patterns such as Façade, Abstract Factory, Factory method, Visitor, etc in development of business logic.
• Utilized event-driven, Observer pattern, Abstract Factory design pattern in order to create and invoke specific rule components in development business logic of rule engine.
• Applied ASP.NET MVC for Quick Quote component.
• Hosted and consumed Web Service/WCF service for development of Quick Quote, Rating, and for the interface with third party components in consuming data in such components as ChoicePoint, FireLine, Property Protection class.
• Used BasicHttpBinding of WCF services for backward compatibility during conversion from the existing Web Services for communication with third party components such as ChoicePoint, FireLine, Property Protection class.
• Used WsHttpBinding of WCF services in development new component for such as new raters.
• Used WebHttpBinding of WCF services in development of Quick Quote component in support AJAX feature for web pages.
• Used Multi-threading such as Lock, Mutex, Semaphore in all applications.
• Used Stored procedure, Trigger, User defined function, Service broker, XQuery in SQL Server.
• Used ACID Transactions using stored procedures and WCF with Transactionscope in applications such as agent invoicing.
• Redeveloped new UI components of Insurance sales system and Policy maintenance system using AJAX, JavaScript, JQuery for the enhanced user experience by partial page updating and asynchronous processing.
• For the rich feature of presentation layer, utilized some of ASP.NET AJAX extenders in AJAX control took kit such as Hover menu, Tabs, Modal Popup, Toggle button in development of front-end pages such as Pre-Qualification, Occupant, Property, Rate, Save components, etc, in the first roll-outs and the subsequent.
• Wrote Master page, user control, Theme, CSS for consistent look and function across Insurance sales system and Policy maintenance system
• Utilized LINQ (Entity, SQL, Dataset, XML), ADO.NET for development of Data Access components to interface SQL Server and DB2.
• Wrote Windows Service for WCF service scheduler for analyzing of Quick quote requests.
• Analyzed execution plan for Query optimization to figure out the cost of Join, SubQuery, Index usage.
• Utilize Sql profiler/Tuning advisor for Query performance collection.
• Production support for Insurance Sales/Billing system and Policy maintenance system for Homeowner Insurance, Auto Insurance.
• Trouble shoot (emergency call)

Environment: Waterfall, Visual Source safe, ASP.NET 3.5/2.0, WCF /Web service /SOA, Windows Service, Silverlight /WPF/ MVVM, IIS 6.0, MS.NET Framework 3.5/2.0, C# 3.0/2.0,, Visual Studio 2008/05, SQL Server 2008/05, NHibernate, DB2, AS400 iSeries, WebSphere 5.0

Confidential, Irvine, CA

.Net, ASP.NET, C# Developer

Responsibilities:

• Worked on development of Insurance raters for Insurance products such as Auto and Motorcycle with some involvement of UI development.
• Participated system development in analysis, coding, testing, and implementation
• Worked independently in new development of Motorcycle rater for Nevada, Arizona states in business logic.
• Worked independently in rewriting of Motorcycle rater for California.
• Participated as a team member with 3 others in new development of Auto Insurance rater for New York, Nevada, Wyoming.
• Participated as a team member with 3 others in rewriting of Auto Insurance rater of California
• All the business logics for raters were developed using C#2.0.
• Utilized Observer pattern with Publisher/Subscriber concept to communicate between components inside Insurance rater.
• Applied Design patterns such as Strategy, Singleton, and Factory method, etc.
• Used Multi-threading such as Lock in all applications.
• Utilized Windows Service for Event logging.
• Utilized ADO.NET, XML, Stored procedures, trigger, User defined function.
• Production support for SalesX (Insurance sales system) for Auto Insurance, Motorcycle Insurance.
• Participated in enhancement of UI component for Insurance sales system using User control, Composite controls, JavaScript, CSS, XSLT
• Utilized BI SSIS for ETL and data mining in combination of SSAS by creating cubes, dimension to support Underwriter. The generated data were used in underwriter in rater table generation and analysis, etc.
• Utilized SSRS for reporting

Environment: Visual Source safe, ASP.NET 2.0/1.1, Windows Service, Win Form, MS.NET Framework 2.0/1.1, C# 2.0/1.0, IIS 6.0, SQL Server 2005, Visual Studio 2005, AS400, DB2

Confidential, Irvine, CA

Responsibilities:

• 80% of responsibility was for development, and 20% was for maintenance.
• Developed Fleet tracking & transaction system as a team member with another developer
• Developed Incentive verification system as a team member with 4 other developers.
• Developed independently Fleet Roll-forward system, Fleet LCM/Depreciation/ Lease Income system, Fleet P&L system, Vehicle Roll-forward system, Anti-dumping system, Company Car Roll-forward system
• Maintained Vehicle tracking System
• Developed Company car tracking & management system as team lead with 2 other developers.
• Used Distributed Transactions in Vehicle tracking system, RollForward system, etc.
• Used Multi-threading such as Lock, Mutex, Semaphore, signaling.
• Participated in full SDLC from requirement gathering, system analysis, design, coding, testing, implementation, to documentation.
• Technical features: User control, JavaScript, CSS, XML, XSLT, ADO.NET, Stored procedure, UDF, Crystal Report, DTS were utilized.

Environment: Visual Source safe, ASP.NET 1.x, JavaScript, Windows Service, Win Form, MS.NET Framework 1.1, C#, VB.NET, IIS 5.0, SQL Server 2000, Visual Studio 2003, AS400, DB2, Java