Changhwan Chae

Sr. Software Engineer at BizFlow Corp.
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Contact Information
us****@****om
(386) 825-5501
Location
Centreville, Virginia, United States, US
Languages
  • English -
  • Korean -

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Experience

    • United States
    • IT Services and IT Consulting
    • 1 - 100 Employee
    • Sr. Software Engineer
      • Nov 2018 - Present

      The Centers for Medicare & Medicaid Services (CMS)- Developed the Employee & Labor Relations process.- Implemented multiple web application forms using WebMaker, AngularJS, and JSP.- Involved in all phases of Software Development Life Cycle (SDLC) like Analysis,Design, Development, Implementation, and Testing of the project.- Involve participants in the story growing meeting and define the complexities for eachstory.- Designed and implemented to comply with the section 508 accessibility standard.- Environment: JDK 1.7, JSP, AngularJS, jQuery, Bootstrap, HTML5, CSS, MyBatis 3,Spring, Oracle 12c, PL/SQL, Tomcat 8, JUnit, GIT, Protractor, Linux, Agile - Sprint, WebMaker, JasperReport, JAWS Screen Reader, TFS (Team Foundation Server) Show less

    • Sr. Software Engineer
      • Sep 2019 - Mar 2020

      TriWest Healthcare Alliance, Phoenix- Develop health claim records search on Veteran Portal System for 18 million veterans.- Involved in all phases of Software Development Life Cycle (SDLC) like Analysis, Design, Development, Implementation, and Testing of the project.- Involve participants in the story growing meeting and define the complexities for each story.- Implemented RESTful Web services in SOA (Service-Oriented) Architecture to retrieve data from client-side.- Developed REST controllers using Spring Web to serve the UI with require JSON data.- Developed REST exception handling controller advice to respond to bad requests and server-side exceptions.- Finding and fixing vulnerabilities to mitigate risks, and improve cybersecurity.- Migration and upgrade BizFlow 12.3 to 12.6.- Troubleshooting and enhancing solutions.- Environment: JDK 1.8, JSP, AngularJS, Angular 8, jQuery, Kendo, Bootstrap,HTML5, CSS, MyBatis 3, Spring, JAX-RS REST API, SQL Server, T-SQL, Tomcat 8, JUnit, GIT, Protractor, Agile - Sprint, IBM Rational Team Concert Show less

    • Sr. Software Engineer
      • May 2018 - Nov 2018

      The Joint Chiefs of Staff (JCS)- Enhanced the collaboration system.- Integrated BizFlow with Alfresco EDMS.- Environment: Java, JSP, MyBatis, Spring, AngularJS, SQL Server, JasperReport,Tomcat 7, Alfresco EDMS

    • Sr. Software Engineer
      • Feb 2018 - May 2018

      The Indian Health Service (IHS)- Developed the recruitment process.- Implemented multiple web application forms using WebMaker, AngularJS, and JSP.- Involved in all phases of Software Development Life Cycle (SDLC) like Analysis,Design, Development, Implementation, and Testing of the project.- Designed and implemented to comply with the section 508 accessibility standard.- Environment: Java, JSP, MyBatis, Spring, AngularJS, SQL Server, WebMaker,JasperReport, Tomcat 7

    • Sr. Software Development Engineer
      • Mar 2004 - May 2018

      Research & Development- Involved in all phases of Software Development Life Cycle (SDLC) like Analysis, Design, Development, Implementation, and Testing of the project.- Redesigned and developed BizFlow product to single page application using Angular 7 with REST API from JSP.- Provides technical leadership to develop vision, strategy, architecture, and overall design for BizFlow product (versions 10, 11, and 12).- Developed the BizFlow Business Process Management product and maintenance of product modules.- Involved in performance tuning to Web Applications and Database.- Fixed vulnerabilities to mitigate risks.- Create patches to provide solutions and hotfixes to BizFlow customers.- Integrated BizFlow with Alfresco EDMS, SharePoint, ADFS, and LDAP.- Designed and implemented to comply with the section 508 accessibility standard.- Environment: JDK 1.7, JSP, AngularJS, JavaScript, jQuery, Bootstrap, HTML5, CSS,MyBatis 3, Spring, Oracle 12c, PL/SQL, SQL Server, T-SQL, Tomcat, JUnit, JMeter, LoadRunner, Subversion, Protractor, SOAP, XML, Unix, Linux, Agile - Sprint, WebMaker, JasperReport, JAWS Screen Reader, Groovy, AppDynamics (IT/PasS monitoring), JIRA, Alfresco, SharePoint, ADFS, LDAP Show less

    • Sr. Software Engineer
      • Apr 2016 - May 2016

      Federal Reserve Bank (FRB), Kansas- Finding and fixing vulnerabilities to mitigate risks, and improve cybersecurity.- Environment: Java, JSP, jQuery, SQL Server, WebSphere

Education

  • Soongsil University
    Master's degree, Database
    1994 - 1996

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