Computer Science State University
Resume:
Liem D. Nguyen
************@*****.***
PROFILE:
Expertise in PowerBuilder and Oracle PL/SQL with 15 years of experience.
Over 2 Years of development experience in Oracle APEX 4.0.
Expertise in using PowerBuilder 7/8/9/10/11/12.1/12.6 application builder tool to build database driven applications.
Involved in complete SDLC including architecture, analysis, design, development, testing, implementation & maintenance of application software in the Client/Server and web based environments.
Extensively used PL/SQL to build Oracle Packages, stored procedures, functions, triggers, cursors, ref cursors, views for processing data, enforcing referential integrity and needed business rules.
Experience in developing validations of the page and page items using Ajax calls and also PL/SQL packages.
Experience in developing interfaces to interact with multiple schemas for data loads and refresh.
Experienced in Tuning SQL and PL/SQL code for better performance with large volume of data.
Experienced team lead in software design, development, testing, maintenance, client support.
Critical thinker who resolves issues quickly and consistently exceeds performance standards.
TECHNICAL SKILLS:
Oracle Apex (4.0).
Oracle PL/SQL (9i, 10g, 11g).
PowerBuilder (6-12.6).
Java (1.8).
C#.
C/C++.
ASP.NET.
ASP.
MS SQL Server.
MS Office (Excel, Word, PowerPoint).
PROFESSIONAL EXPERIENCE:
Beckman Coulter, Inc., Brea, CA May '03 – Jul '17
Senior Application Developer
Developed and Maintenance multiple home-grown applications:
1 Oracle Apex application for online sale instruments.
Designed and developed web application for marketing group using Oracle Apex. Users can create invoice for customer by selecting core system with multiple system options.
Designed, developed and Maintenance 7 home-grown PowerBuilder applications.
Work with end users and business team to understand the functionality of the applications in PowerBuilder.
Responsible for developing custom applications using PowerBuilder. This involves developing PowerBuilder Reports and Forms for user input.
Updates and maintains existing PowerBuilder applications. Applies PowerBuilder technologies such as DataWindows and Functions. Writes code that follows object-oriented design and patterns. Creates SQL queries, tables views, functions, stored procedures, and indexes for use with applications.
Followed standardized patterns to prevent SQL injections and URL tampering from PowerBuilder applications.
3 Java Web applications for document searching and creating document into media.
7 Java Service applications for processing documents.
1 C# with .NET 4.5 applications for collecting data from Beckman instrument.
1 ASP web application for document approval.
Designed and developed multiple packages, stored procedures, functions, triggers, and views in PL/SQL for back-end processes for all PowerBuilder, Java, ASP, and C# applications above and storing data in Oracle database.
Designed and developed enhancements to Instrument Data Collection (IDC) system to collect data for instrument and reagents testing which resulted in savings of over $1 million.
Led full lifecycle application development and support to meet internal customer needs for multiple PowerBuilder applications, including system for creating labels and documents in multiple languages. Efforts resulted in recurring savings of $300,000 per year.
Developed multiple automation processes for mass update documents resulting in $100,000+ savings per project.
Provided global applications support with multiple sites and 500+ users with 100% customer satisfaction.
Led successful migration effort of all company workstations to Windows 7 to meet compliance requirements.
Beckman Coulter, Inc., Brea, CA 1998 – 2003
Application Developer
Developed and Maintenance application in C++.
Developed and supported server-side service processes to validate data from Beckman in-instruments.
Service read each record from the input file parses them and validate them with the instrument’s specification to identified pass/fail records. The users can ship the instruments or not based on the testing results.
Led support for all Instrument Data Collector and domain window servers.
EDUCATION:
M.S., Computer Science – California State University, Fullerton, CA - May 2008.
B.S., Computer Science – California State University, Fullerton, CA - May 2003.
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