David Martinez

Home : (972)-943-8322

Cell : (972)-333-5827

email: zenitramus@yahoo.com

URL: http://www.sdsc.edu/~damartin

PROFESSIONAL SUMMARY

• Extensive full life-cycle development experience on commercial and internal products from requirements analysis through product release
• Experience with C/C++, Java, J2SE, Swing, Applets, JDBC, J2EE, RMI, EJB, SQL, ODBC, Oracle, XML, JSP, XSL
• Experience with object-oriented design methodologies and UML.

PROFESSIONAL EXPERIENCE

Pacific Technology Services February 2001 to October 2001

Carlsbad, CA/Dallas - Plano, Tx

Sr. Software Engineer

• Developed data access layer (DAL) an API, abstracting JDBC to provide database access independent of database vendor (ie. Oracle and SQL Server). Developed DAL based abstraction layer for generalized queries, and transactions.
• Provided JDBC ResultSets and XML based output from queries. Designed and implemented code for DTD and Schema based XML results.
• Gathered requirements from internal end-users. Expressed high level designs in UML using Rational Rose with emphasis on object models and sequence diagrams.
• Responsible for data model design and implementation including database metadata. Used Oracle 8i for database implementation.
• Implementation was handled using J2SE, JDBC, EJB, Oracle 8i. XML and result sets used as data interchange between user-interface and business services layer.

· Designed and evolved the XML schema used in the system. Used the Apache Xerces DOM API in the business and DAL layers.

• Implemented connection pool manager, a multi-threaded service utilizing thread management and synchronization.
• Implemented an instrumentation applet for monitoring database and connection activity, and usage.
• Developed JSP’s, Java Beans as part of a client-based web service utilizing the above DAL framework.
• Developed an automated build system for application using dos scripting (java tools such as jar, javac). Followed procedures for source code control, multi-version development, and build/release processes.
• Developed base architectural services such as logging, and exception handling framework.
• Provided test cases and collaborated with QA on the development of Test Plans.

Pharmingen - BD Biosciences November 2000 to Feb 2001

La Jolla, CA

Sr. Software Engineer (short term contract)

• Developed software to parse and extract content from diverse html catalogs and sources to populate corporate database (Oracle 8i) via JDBC.

• Improved performance of swing based data catalog-viewer application in various ways (redesigned dynamic query builder, reduced load time, etc).
• Provided mentoring to team members with regards to Java technologies.

Aurora Biosciences April 2000 to November 2000

La Jolla, CA

SR. Software Engineer (contract)

• Responsible for client-side (applet) technical architecture and implementation (View/Controller/Model) for web based screening system (UHTSS).

· Designed, and implemented a set of java classes for the capture, storage and analysis of data from the Aurora Ultra High Throughput Screening System (UHTSS, see http://www.aurorabio.com/discovery). Data were requested from an Oracle database. Results of calculations were written to an Oracle data mart. Java classes corresponded closely to real-world entities being modeled.

· Developed Java GUI and classes to create charts and several 2-dimensional views of micro-plate data.

• Gathered requirements from internal end-users and scientists and performed use case analysis. Expressed high level designs in UML using Rational Rose with emphasis on object models and sequence diagrams.
• Responsible for data model design and implementation. Implemented dynamic computational workflow using Apache Xerces and Sun JAXP DOM/SAX API’s.
• Significantly improved performance and resource use of numerically intensive computation engine. Reduced computation time to 2 seconds vs. 2 minutes utilizing java based performance guidelines and tips.
• Implementation was handled using java Swing, J2SE, Oracle 8i, and PL/SQL. XML and HTTP used as data interchange between user-interface and business services layer.
• Developed an automated build system for application using dos scripting (discovered a major flaw with Jbuilder4 regarding jar file imports). Developed procedures for source code control, multi-version development, and build/release processes.
• Developed base architectural service ie. exception handling framework.
• Implemented 1-D signal processing algorithms (background subtraction, peak detection).
• Developed java code in both Unix (Linux) and Windows NT environments.

San Diego Supercomputer Center June 1996 to July 2000

La Jolla, CA

Scientific Programmer/Analyst

• Team lead for web based data visualization/management system.
• Implemented using Java (applet)/HTML for user interface (Java 1.2 and Java Foundation Classes (Swing) on Solaris) which accessed XML based data.
• Designed and developed the XML and DTD's implemented within the database. See link.
• Developed java code in both Unix (Solaris) and Windows NT environments.
• Gathered requirements from application scientists. Developed functional and technical specifications.
• Ported a VRML/OpenGL application (Molscript) from Unix to WIN32 using Visual C++/MFC.
• Extensive Perl/cgi programming experience for back end systems to front end forms based web gui's for Protein Databank. This included creating a web based, GUI and the server side application to generate VRML from PDB files. See, PDB link and example 1ATP
• San Diego Bay project – Web based modeling the habitat of the San Diego bay. Implemented using java, VRML and perl-cgi. This included design of front end GUI and implementation of Java/VRML to develop biological based simulations. Substantial perl scripting to render VRML models from raw biological and bathymetry data.

International Business Machines, Inc. June 1995 to Jan 1996

San Jose, CA

Programmer/Researcher

· Designed and programmed a multi-media expert system.

· Responsible for HTML, audio/video and graphics which provide "just in time" documentation and training for operators and process engineers.

• Gathered requirements from internal end-users and scientists.
• Documented and implemented workflow for various in-house vacuum and wafer deposition processes.

· Programmed in C, proprietary expert system language and REXX (OS2 scripting language similar to perl).

GM/Hughes Corporation: Delco Systems Operations Feb 1986 to May 1993

Santa Barbara, CA

Electronics Systems Engineer

· Responsible for Porting, integrating, and tested digital electronics for TOW launchers on LAV 25 turret.

· Identified, troubleshot and corrected electronics problems for a large variety of analog and digital based projects.

· Performed hardware and software test integration.

• Performed circuit and worst case analysis using PSpice.
• Responsible for high speed analog filter circuit design for Delta inertial guidance system.
• Designed, and implemented a large variety of analog and digital circuitry using Orcad.

· Developed a variety of test procedures for hardware checkout.

Hewlett Packard Company Dec 1984 to Feb 1986

San Diego, CA

Electronics Development Engineer

· Designed, and developed computer peripheral electronics hardware, including electronic circuitry, printed circuit design.

· Designed and implemented circuitry using in-house circuit design tools.

· Performed worst case and timing analysis of digital circuitry.

· Performed accelerated hardware testing to increase product quality and longevity.

· Designed hardware to withstand effects of electrostatic discharge (ESD).

EDUCATION

BS Electrical Engineering, University of California at San Diego, 1985

MS Computer Science and Engineering, University of California at San Diego, 1996

References available on request