Experience

creehan & company

• United States
• IT Services and IT Consulting
• 1 - 100 Employee

• Software Engineer

  • Nov 2011 - Present

  Work in a development team as senior developer. Responsible for developing and maintaining a health care system for specialty pharmacy. • Analyze and clarify requirement. Create conceptual design and technical functional design. Create proof of concept and prototypes. • Develop complex UI and sophisticated back-end solution. Implement the solutions using .NET technologies, COM interop, oracle database, third party libraries such as Aspose, LeadTools. • Develop cloud based application using microservicess architecture. • Refactor legacy source code to improve performance and maintainability. • Create complex functions, views, stored procedures and triggers in Oracle database. • Develop SOAP/REST web services to facilitate the communication between the components and with external systems. Deploy services using various binding and security mechanism. Create clients to consume web services. • Use parallel programming and caching to improve the performance. • Write unit testing using Visual studio testing framework, xUnit and Moq. • Collaborate with business analyst, quality assurance, support and infrastructure teams for quality assurance and software deployment • Create conceptual design, functional design and implementation documents. Environment: Visual Studio 2005/2010/2017, .NET Framework 2.0/4.0/4.5, .NET Core, C#, WinForms, Oracle 10g/11g, XML, XSD, XSLT, SOAP, WCF, REST, Asp.net Web API, ASP.NET Core, Typescript, CSS, HTML, Bootstrap, TFS, GIT. Show less



My PC Techs

• United States
• IT Services and IT Consulting
• 1 - 100 Employee

• Web Developer

  • Mar 2011 - Jun 2011

  • Developed a database driven web site that support searching, subscription, inquiry functions. • Design and develop the web pages. Environment: Linux, Apache/Tomcat, PHP, HTML, CSS, JavaScript, Ajax, Jquery, • Developed a database driven web site that support searching, subscription, inquiry functions. • Design and develop the web pages. Environment: Linux, Apache/Tomcat, PHP, HTML, CSS, JavaScript, Ajax, Jquery,



Vegetation Index And Phelonogy Lab, University of Arizona

• Software Developer/ Research Assistant

  • Jan 2009 - May 2011

  Collaborated with other scientists on a NASA Vegetation Index Measures project. Designed and developed a software to deliver seamless, consistent and fast accessible earth system data. • Developed a parallel processing program to process large image sets from satellite sensors. • Designed large global multiple sensors data storage. • Generated, validated and transformed sensor image's metadata. • Developed web interface with interactive user interface to deliver data. • Developed complex web UI with a search engine supporting range searching. Environment: Fedora, C, XML, XSD, XSLT, Apache, Mysql, PHP, HDF image viewer Show less



China Petrochemical Corporation

• China
• 1 - 100 Employee

• ERP System Support

  • Jun 2003 - Jan 2005

  • Participated in ERP implementation including planning, data importing, data validation. Conducted end user training for 1000+ employees. Provided support for end users. • Knowledge of SAP system. Thorough knowledge of SALE module of SAP system. • Participated in ERP implementation including planning, data importing, data validation. Conducted end user training for 1000+ employees. Provided support for end users. • Knowledge of SAP system. Thorough knowledge of SALE module of SAP system.