OBJECTIVE:

Seeking a challenge .Net Architect/Lead/Senior Developer position in system software design and development using C#, Net Core, WebAPI/Restful/WCF, Angular, AWS Cloud, MicroServices, ASP.Net MVC, T - SQL, and NoSQL.

SUMMARY:

• Solutions architect, tech Lead, and senior developer with more than 20 years IT experience on large system software design, development, deployment, maintenance and trouble shooting.
• Strong background in OO software system analysis and design, multi-threading large bank financial credit/debit card, ACH, and ATM payment system, mortgage and cash loan, property management system, and image capture process, rule and event engine, risk decision engine, real time large volume transactions system, medical insurance payment incentive, EMC and Captiva enterprise content management, point of sale system software design and development, logical and physical database system design and development.
• Excellent analysis, mathematics, problem solving, trouble shooting skills, learning capability, nice team player, and work oriented person.

TECHNICAL SKILLS:

• C#, NET Core, Angular, WebAPI, Restful, WCF, AWS Cloud, ASP.NET MVC, Agile, Scrum, Java Scripts, Type Scripts, Bootstrap, HTML5, SCSS, SQS, SNS, MSMQ, HttpClient, AJAX, JQuery, SharePoint, MVVM, MVP, LINQ, XML, XQuery, XSLT, XSD, XAML, Window Service, SOLID, Design Pattern, UML, SOAP, SNMP, TFS, GitHup.
• T: SQL, SQL Server, ADO.NET, Entity Framework, Oracle PL/SQL, RDBMS, Dapper, DDL, DML, Database Schema, Stored Procedure, Trigger, View, Function, Index, ODBC, JDBC, PRO*C, Oracle Package.
• C++/C, OOA/OOD, Win32 API, National Rose, VC++, COM+, MFC, ATL, STL, EMC Captiva, VB.NET, VBA, Workflow, Risk Matrix, Central Decision Engine, Event Rule Engine.

PROFESSIONAL EXPERIENCE:

Senior Consultant

Confidential, Richardson, TX

Responsibilities:

• As a Senior Consultant, design and develop the large middle tier immigration services provider using C#, Net Core, WebAPI, Identity as a Services, Token, OAuth, SAML, SSO based authentication and authorization, Entity Framework with TSQL. Implement WebAPI services action filter, multiple roles check, audit log, and exception handling.
• Design and implement front web UI and Restful services call using AngularJS, Angular 2/6/7, TypeScript, JavaScript, Bootstrap, HTML, SCSS, filters, directives, templates, components, routing, data binding, Observable, and Factory.
• Designed, developed, and implemented AWS cloud based infrastructure and its solutions using EC2, VPC, S3, ELB, EBS, Route53, IAM, Cloud Watch, Lambda, Elastic Search, SQS, SNS, CLI, Dynamodb, Cache, MicroService, Docker, CI/CD. Created and configured elastic load balancers and auto scaling groups to distribute the traffic and to have a cost efficient, fault tolerant and highly available environment. Used IAM for creating roles, users, groups to provide additional security to AWS account and its resources, Implemented Elastic search to quick retrieve immigration case and beneficiary information.

Solutions Architect/Lead Developer

Confidential, Frisco, TX

Responsibilities:

• As a Senior Consultant of solutions architect and lead developer, created the Confidential mobile cash services API solutions design document and developed multiple services API which include internal services, external services in DMZ, and business partner services for both WCF SOAP and Restful, Fraud Risk management, Settlement to implement ATM transaction direct authorization and staged customer transactions.
• Built the user credential and ApiKey with HMAC for both SOAP and Restful message header.
• Implemented WCF restful services messages exchange by HttpClient and exception handling.

Solutions Architect/Lead Developer

Confidential, Richardson, TX

Responsibilities:

• As a solutions architect and Lead Developer, worked with BA and DEV teams to define the solution architecture for payment system.
• Develop the technology strategy, solution concepts, proposal, enhancement, and build point of concept for the business functionality of payments system integration.
• Design and build Bottomline and Worldpay Subsystem integration with Payment system using C#.Net, WebApi, HttpClient Async, Authorization Tokens, Entity Framework, WCF SOAP/Restful, PII data encrypt and decrypt, Proxy extension library, T-SQL, and Unit tests.
• Created the payment system integration design class diagram, sequential diagram, and activity diagram. Build the payment core library with JSON request and response messages as well as exception handling module.
• Design and create the multiple Azure Cloud Microservices of payment systems.
• Design and implement Payment UI and Onesite Resident and Client web application using .Net Core, Angular 2/4, TypeScript, ASP.NET, WebAPI, MVC, JQuery, Ajax, Java Script, HTML5, WCF Rest, TSQL.
• Design and develop core payment system framework workflow, foundation library, WebApi, Restful, and WCF services of Account, Customer, Payment, Transaction, Ledger, and Resident integration with multiple third party providers such as Jack Henry, ACapture, Bottomline, Worldpay, Yardi, and Propertyware to process real time credit/debit card, ACH, Refund, Void payment transactions, settlement, scheduled batch job.

Senior .Net Architect

Confidential, Dallas, TX

Responsibilities:

• As senior .Net architect, designed Confidential and health industry web member and admin portal, middle tiers, and backend database application, built point of concepts for SSO, Incentive, Gift Card, Health Actions, Third part tool HumanAPI, and core components, lead development team to complete detail code implementation.
• Executed code review and project daily status check. Built high level control flow diagram, UML model, middle tier class diagram, database design, created oracle database package for view and stored procedures using ASP.NET, C#, WebAPI, Restful service, WCF service, LINQ, Java Script, JQuery, Ajax, HTML5, and CSS.

Lead Developer/Architect

Confidential, Addison, TX

Responsibilities:

• As lead developer and architect working with business analysis, QA automation, and engineering teams.
• Execute code review and project daily status check.
• Create technical specifications, high level design and detail design documents, prototype, point of concept, applications flow chart diagram, class and sequential diagrams, and shared services data contracts definition.
• Lead to design and develop the notification system. Built notification restful WCF service to get the Emails, SMS, and admin actions request data contracts, auto bidding large transactional daily volume messages to MSMQ and save to database through WCF Command service.
• Lead design and implement multi-threading real time batch process window service to get the product messages configuration and notification batches from database, and then call the outbound gateway WCF service and third party Exact Target security web service to transfer real-time large volume email web templates and SMS to customers. Implement multiple application servers load balance, zero downtime deployment, Shared service HTTPS support with s.
• Design and develop Risk Verification View Web, Service, and Database to perform cash loan underwriting, pre-verification, prefunding processing using entity framework to pull larger data objects from multiple databases and implement complex search fields and status combination, UI paging and sorting, data encryption and decryption, data contract and XML serialization and de-serialization, AD group access, and UI design and implementation using MVC, WCF, Restful service, MSMQ binding and integration binging, Linq to XML, XQuery, create SQL database schema, tables, stored procedures, views, functions, and indexes.
• Design and develop foundation libraries framework which include app fabric caching, dependency resolution, structure map, log exception, activity monitoring, and configuration.

Senior Consultant/Lead Developer

Confidential, Dallas, TX

Responsibilities:

• Designed and Developed the NET CAS Client Web Application and the WCF/RESTful service to validate security service ticket and proxy ticket, client authentication, enforcement API authorization via CAS server using C#.NET, ASP.NET, MVC, SOAP, HTTP, Data Contract Serialize, Message Inspectors, JQuery, HTML, CSS, JavaScript and Design Pattern.
• Lead the migration of the Jericho Authorization Provider (JAzP) from SharePoint . Redefined and rewritten the JAzP .NET components to capture access requests for any object stored in the SharePoint 2010 portal, collect the attribute values from the SAML token, formulate the NCES compliant SAMLBoundXACML SOAP digital signature request.

Senior Consultant

Confidential, Richardson, TX

Responsibilities:

• Designed and developed the large bank financial credit and debit card management system which include application framework and appointment system with workshop using C#.NET, WPF, Winform, WCF, Web Service, LINQ, user control components, dbiSchedule, TFS, and source control.

Sr. Software Developer

Confidential, Plano, TX

Responsibilities:

• As a Senior Developer, designed and developed and implemented Enterprise Image Capture (EIC) system applications.
• Built the electronically document discovery window service application to handle original and seller un-indexing loan files through IBML scanner, email, e-delivery and CWFax using multi-threading C#.NET, WPF, C++, LINQ, COM+, Window32 API, Window Service, Web Service, WinForm, ASP.NET, ADO.NET, SOAP, TFS, XML, XSLT, EMC/Captiva API, OCR, Adobe/Snowbound/Pixtool image tool process programming.
• Designed and created origination loan files image process IPP workflow and BPM activities workflow based on EMC Captiva InputAccel server and BPM content server, DFC, SQL server, Oracle package, stored procedure, trigger, DDL, and DQL.
• Designed and built EMC BPM activity window services application such as Business Rule Engine, Oracle Exporter, Timer, Documents Exporter, and Execute Class Methods using .NET reflection, Image Enhancement, Metadata Indexing and Document Type Classification.

Sr. Technical Specialist

Confidential, Dallas, TX

Responsibilities:

• Designed and implemented SharePoint Server 2007 and Windows SharePoint Services integration with backend content server.
• Created XML-based metadata model and Business Data Catalog (BDC) which enables integration with content server by connecting via Web services and ADO.NET interfaces and displaying content index search data on the portal.
• Developed and maintained Enterprise Content Management (ECM) application using C#, C++, ADO.NET, ASP.NET, XML, XSLT, XSD, DHTML, SOAP, TSQL, and Metadata. Created the Admin Client application for administrators to maintain the system and documents. Created Webtop application for users to search and browser the documents.

Sr. System Developer

Confidential, Frisco, TX

Responsibilities:

• Designed and developed and implemented the N-tier real-time check cashing and credit/debit financial application.
• Built business logic and risk management metrics components.
• Developed the Central Decision Engine (CDE) to process the real time cash check transaction using multithreading, Winsock and TCP/IP, C++, OOA/OOD, UML, Design Patterns, COM/DCOM, ATL, STL, ADO, T-SQL and external stored procedures.
• Designed and developed the new ValaCheck call center applications which validate the customer information and process the cash check pending transaction using C#, ADO.Net, ASP.Net, Winform, OOA/OOD, UML, Design Patterns, N-Tier data form and data layer, data entry and data access, remote, check images processing, MSMQ, COM, XML, XSD, data encrypt and decrypt, serialization, thread pooling, sockets, async. call, delegate, Win32 API calls.

Senior Software Engineer

Confidential, Richardson, TX

Responsibilities:

• Designed and developed 3-tier financial host credit and debit application to create complex custom applications and value-added programs using C++, Visual C++, COM/DCOM, multithreading, Winsock and TCP/IP, ATL, STL, ADO, T-SQL, VB, HTML/XML, SQL Server, and embedded Visual Tools.