Denglin Chen

***** ***** ******

303-***-**** W estminster, CO 80234 abnf24@r.postjobfree.com

SUMMARY

Senior Java Software Engineer with over 9 years experience in designing and

implementing Enterprise Applications

Skilled at back-end service development with Java/J2EE technologies, including

•

requirement analysis, design, implementation and unit tests.

Expertise at Object Oriented Programming, Design Patterns and J2EE Best Practice.

•

Passion to new technologies with focus on delivering business solution.

•

Looking for a position with technical challenges and chance for career growth.

•

INDUSTRIES

Government Health Care, Storage Area Network (SAN) – Element Management

PROFESSIONAL EXPERIENCE

Perficient, Inc

Lead Technical Consultant, 2006 – present

CLIENT: Major Government Health Care Service Carrier

Led a six-person team to develop E&E (Eligibility and Enrollment) modules for a Health

Care Processing and Administration Platform, which is built on WebLogic10 and

Oracle9g.

• Overcame the challenges of adapting new technologies quickly: (a). JPA for

persistence. (b). ALBPM for long transaction orchestration. (c). JRule for Eligibility

determination. (d). EDI 834 format and (e). Pervasive for 834 mapping.

• Applied strong interpersonal and communication capability to work with wide range of

personnel at all levels to fully understand the business requirements, identified and

resolved technical issues.

• Consistently worked with offshore resource, monitored the iteration execution status

and ensured quality with test coverage and the timely completion of production.

• Significantly improved the performance of the Enrollment batch-job from 30 hours to

2.5 hours by replacing entities with balk iBATIS queries and reducing remote calls.

Ciber, Inc. Greenwood Village, Colorado

Senior Technical Consultant, 2005 – 2006

CLIENT: Major Storage Company

Refactored an outsource Web-Application - Storage(Tape/Disk) Virtualization.

• Contributed to a new test framework that extends JUnit and uses dynamic proxies to

simplify mock object configuration. Wrote applicable unit test suites.

• Applied design patterns and OO design concept to improved the existing application by

refactoring it with test driven development principles.

Websolve, Inc. McLean, Virginia

Senior Developer 2004 – 2005

Led a 3-person team to enhance a web-application that monitors and reports on IT

infrastructures using real-time protocols such as HTTP, SNMP, Socket, and JDBC.

• Enhanced the product with new test engines and performance optimization, which

involved multiple network protocols, algorithm designs and thread pools.

• Designed the Product API: Exposing all product functions through HTTP and simulating

the API usage via a Web application (Struts).

• Re-designed the Product Migration: Switching the applet-servlet application to Struts

based application for better scalability and productivity.

McData, Cooperation Broomfield, Colorado

Software Engineer, 1999 – 2004

Contributed to the development of a SAM management with integration with multi-vendor

applications, trouble shooting processes, security center, event manager, performance

monitoring and group configuration. The architecuture utilizes Swing, RMI, Object

Modeling, Threading, Sockets, SQL/JDBC, SNMP.

• Implemented Teton Manager, a Swing Element Manager for a new switch product. The

key skills were usability design and MVC/Template patterns.

• Enhanced the existing communication with a Secure Socket Layer (SSL); automated

secret management for large fabric.

• Defined private MIBs, designed and implemented the SNMP agent which supports both

public and private MIBs. The challenges of this design included 3rd-party SNMP

Engine selection, Protocol consistence and performance tuning.

• Designed and implemented the EFCM SNMP agent. Solved a critical memory problem

by helping 3rd party partner redefine its SNMP Engine to support dynamic tables.

TECHNICAL SKILLS

Language: Java, C/C++, Perl, HTML, SQL, XML

•

Technology:J2EE(Servlet, EJB, JPA), OOAD, EDI

•

App Server: WebLogic, Tomcat and JBoss

•

Open Source: Spring, Hibernate, WebWork, JUnit

•

Tools: ILOG(JRule), Pervasive, JAXB

•

Database: Oracle and MySQL

•

IDE: Eclipse, Jbuilder and NetBean

•

Source Control: ClearCase, CVS, Subversion

•

Operating System: Windows, Unix, Linux

•

EDUCATION

M.S. Computer Science, University of Kentucky, Lexington, KY

•

M.S. Engineering Mechanics, Tsinghua University, Beijing, China

•

Contact this candidate