Leonardo Marcelino



I am an application developer and architect and I have been working with IT since 1994. I have acquired a large experience working with Java platform, mainly with Java EE. I am also enthusiast  Ruby, Rails and Agile methodologies. Lately I have been developing applications with Ruby, Rails and JRuby.

Knowledge and abilities

Analysis and Development; Application Architecture; Object Oriented; UML; J2SE (Sockets, Threads, Collections, Swing, AWT, SWT, JDBC); J2EE (JSP, Servlets, EJB, JPA, JMS, JSF, Struts, VRaptor, Hibernate, Spring, XStream, DWR); Ruby; JRuby; Ruby on Rails; AJAX; RIA; Flex; XML; JSON; Web Services (JAXWS, JAXB, SOAP, REST); Design Patterns (GoF, J2EE Patterns and Domain Patterns);

Databases: DB2, Derby, MS SQL Server, Postgre SQL and MySQL

Profissional History

Company: IBM Brasil
January/2005 – till date

Actually, I have been working as Analyst, Architect and Developer in a Java Application called Protrack2. It’s a multi-tier Java Application that uses Sockets, Threads and Thread Pools, JDBC, DB2, MQSeries middleware and Swing.
Also I am working as developer in eCAD project, which is a Java EE application developed using Struts, DAO, Services, AJAX with DWR, JSP, Servlets, Taglibs, DB2 and WebSphere application server.

Company: ABET – Associação Beneficente dos Empregados em Telecomunicações

July/2003 – December/2004

Working as Analyst/Architect/Developer, I made part of a development team which the focus was using the Java technology for the Health sector. I acquired a large experience in that Java platform, developing many projects using J2SE, J2EE, Apache, Tomcat, Linux and databases like Postgre SQL and MS SQL Server.

Company: Carril e Dutra Ltda

October/1998 – July/2003

Working as Analyst/Architect/Developer, I developed commercial and industrial applications for many segments, using Visual Basic , Visual Study and MS SQL Server database.

Company: Comax Informática

July/1995 – October/1998

Working as Analyst/Developer, I developed commercials and industrial applications for many segments, using languages like Clipper, Visual Basic


. Bachelor: Computer Science at CREUPI University, 2000

. Technical: Técnico em Processamento de Dados at CEETPS, 1995

Technical Training

. Undergone Training in Java at Sun Microsystem Education Services

. Undergone Training in Java Development for Web at Caleum.

. Undergone Training in WebSphere Portal V5 at SST It Solutions

. Undergone Training in EJB Development for WebSphere using Web Sphere Application Developer V5.0 at IBM.
. Undergone Training in TDD (Test Driven Development) at IBM.


. Sun Certified Enterprise Architect 5.0

. Sun Certified Developer for Java Web Services 5.0

. Sun Certified Web Component Developer 1.4

. Sun Certified Java Programmer for the Java 2 Platform 1.4

. Sun Certified Associate for the Java Platform, Standard Edition

. IBM SOA Certified


. English: Advanced (Able to take an overseas business trip unaccompanied)

. Spanish: Basic


2 comments so far

  1. Nikhil Bagul on

    tp-link 150mbps tl-wn721n wireless usb router how to use in ubuntu 12.04 lts

  2. ba salary on

    Nice job I’m glad I serached you out, you
    have been very helpful

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