TECHNICAL SKILLS:

Languages: Java, J2EE/JEE/EJB - 3/JPA, Oracle ADF, Javascript, AJAX, JSP/JSF, JSON,Web Services (SOAP/RESTful/WSDL), Perl, PHP, Python, SQL, HTML, XML;

Databases: Oracle DBMS 11g, SQL Server 2008/2012;

Tools: /Frameworks: Oracle ADF, JSF, Struts, Spring, Hibernate, Ant, Log4j, JDeveloper, SVN, CVS, Jenkins, MS Office, MS Project, MS Visio;

Technologies/Platforms: Windows Server 2003/2008/2012 , Windows XP/7, UNIX, Windows Hyper-V, VMware ESXi, Oracle OC4J/Weblogic, Tomcat/Apache, AWS/ECS;

Network/Storage: TCP/IP(v4/v6), HTTP, UDP, SMTP, SAN, PKI, SAN/NAS, CIFS/NFS;

Other Skills: Agile Methodologies, Offshore Development.

PROFESSIONAL EXPERIENCE:

Confidential, Fairfax, VA

Sr. Consultant / Technical Lead

Responsibilities:

• Development of Confidential enterprise web application eTrace v5.0 using technologies including JEE/JSP/JSF, EJB-3, Oracle 11g/ADF/Weblogic; and implemented key components including the secure online-chat with features such as automatic real-time translation, in session file uploading/viewing, request notification, and session transfer; also in-app email function with auto-creating and attaching PDF document.
• Led and carried out the application maintenance project on several Confidential ’s key business applications including eTrace 4.0 and NForce; resolved critical issues in the areas of incorrect data search result and system performance and response time; technologies involved include J2EE/JSP, Struts, Oracle OC4J/Weblogic, Oracle BC, .NET, and PowerBuilder;

Confidential, Greenbelt, MD

Sr. Systems Engineer

Responsibilities:

• Partnered with Microsoft and provided the system and network design support to U.S. Confidential to test and evaluate Microsoft SCCM/SCOM 2007 enterprise management solution; built a virtual test lab simulating customer’s IT infrastructure using products including Windows Server 2008 R2 SP1 Hyper-V and Vyatta virtual IP router; developed a low-cost VPN remote access solution; assisted in product training and knowledge transfer to the customer; provided system administration and operation support; produced and maintained the system design documents including system and network diagrams.

Confidential, Frederick, MD

Sr. Systems Engineer

Responsibilities:

• Reviewed and provided recommendations on design and development of MHS/DHSS/ Confidential ’s DMLSS, JMAR, CUD, and DCAM medical supply logistic management software applications using .NET and J2EE technologies;
• Proposed the consolidated infrastructure and platform solution for Confidential ’s JMAR and CUD portals, with the potential of a significant savings on the hardware and software cost;
• Researched new and emerging technology products and methods for potential use by the DHSS DMLSS/DCAM applications to improve capabilities and performance;
• Participated as the Systems Engineer in Information Protection Task group and provided a broad spectrum of engineering support to the DMLSS/DCAM application development and maintenance activities such as DRW documentation, DIACAP process, and STIG scan;
• Participated in building and maintaining the Systems Engineering lab using Dell blade systems and VMware/ESXi, tested and evaluated hardware/software products and technologies including Windows Server 2008 R2 SP1, Windows 7, SCCM 2007, Oracle 11g, PKI, IPv6, etc.

Confidential, Washington, DC

Sr. Systems Engineer

Responsibilities:

• Led the implementation and deployment of the new web based Confidential access solution using OpenFox Messenger, conducted the product and technology evaluation, developed the implementation and deployment plan, and carried out the data migration and the initial system administration tasks;
• Led the development of a system configuration and user account management application in Oracle, Windows, and VMware environment; developed the system architecture, system requirement, and application interface; developed the application and user interface requirement; led and participated the database modeling and development;
• Provided system operation support, administration, and maintenance; provided support to customers including Confidential, BOP, and IRS; developed procedures and processes for customer support and user account management.

Confidential, Reston, VA

Sr. Software Engineer

Responsibilities:

• Led several implementation projects of call-record billing and mediation solutions for major US telecom clients using the company’s advanced and award- winning software product FusionWorks developed using Java/C++ on UNIX/Oracle platform. The implemented solutions include the roaming call-record mediation and the SMS call-record collection for Confidential & Confidential Wireless Services (AWS) and completed the tasks ahead of schedule; the 2G/3G wireless call record mediation solutions for the clients including Rural Cellular Corporation ( Confidential ), Telecom Italia Mobile (TIM), Sprint PCS, and Cingular;
• Built, maintained, and managed the company’s U.S. office IT system with UNIX (Solaris/HPUX) and Windows servers, Windows desktops, network printers, Cisco networking devices, and network connection to the company’s oversea headquarters.

Confidential, Herndon, VA

Systems Engineer

Responsibilities:

• Led the design and development of Frame Relay and ATM network management modules for Confidential with features such as topology auto-discovery, real-time link status monitoring, congestion and usage reporting, and capacity analysis; the product was initially developed in Java/C++ on Windows and SQL Server and later ported to different UNIX platforms including Sun Solaris, HPUX, and IBM AIX;
• Developed the critical auto fail/switch-over solution for Confidential which significantly increased the product’s capacity and marketability;
• Carried out software integration activities between Confidential and other software/hardware products including Confidential network printer and Cisco networking devices; Implemented Confidential solutions
• As part of Unicenter product SWAT team involved in high-priority tasks and projects, provided quick response on product requirements, and delivered solutions to the customer.