Summary

• 4 years of experience as a Software Engineer, developing and supporting software applications for large Mexican and American companies. Proficient in Java technologies and competent in full stack.
• Developed desktop and web based applications for the Retail and Banking sectors, using a wide array of technologies.
• Experience with several Java Frameworks and technologies, Spring, Struts, JSF, JSP, Apache Wicket.
• Knowledge and experience on persistence technologies, RDBMS and SQL JDBC, JPA and Hibernate.
• Exposure to development methodologies like SCRUM, Kanban, Extreme Programming, Waterfall.
• Experience and understanding of Design Patterns, e.g. Observer, Mediator, Factory, Prototype, Decorator, Facade, Strategy.
• Worked with mixed OS environment, Linux/Unix, Windows and Android.
• Tool agnostic and able to cope with huge code bases in different programming languages and poorly maintained applications.
• Able to instruct and train other developers.

Technical Skills

Professional Experience

Confidential

Senior Software Engineer

Project Description:

Backend changes to support a different Loyalty management platform and development of new features enabled by the migration.

Responsibilities-

• Reimplementation of legacy application used to change points for cash from native android/iOS code to a web based solution.
• Adding functionalities in legacy applications to support different reward programs.
• Coding of new UI in Spring Webflow and Apache Wicket to support adaptive web technologies.
• Modifications to current live applications to obtain reward information from a new provider and changes to UI in legacy JSPs to enhance UX.
• Construction and deployment of changes to integration servers for testing by QA team.
• Analyzing the existing code to support BA team decisions.
• Training of new hires.
• Attendance of all Scrum Ceremonies.

Technology and tools used: Java, RCA, RTC, IBM Jazz, Websphere, Unix, Wicket, Spring Webflow, HTML, CSS, YUI.

Confidential

Responsibilities-

• Updating an abandoned Java module used to reset a credit card PIN.
• Integration with new RESTful services to support EMV specific features.
• Creation of new origination categories UI for EMV cards.
• Automation of origination testing through Selenium and Junit.
• Integration with past project Secure Pin Delivery to support the creation of a PIN at origination time.

Technology and tools used: Java, RCA, RTC, IBM Jazz, Websphere. EJB, DB2, Wicket, Spring Webflow, JaxWS, JMS, Junit, Selenium, JSPs, HTML, CSS, YUI, Some proprietary technologies for WS interaction an UI.

Confidential

Responsibilities-

• Creation of the business logic layer, implementing all the bank rules for eligibility in Java.
• Consuming the Encryption/Decryption services of the bank for the secure communication of customer information using JAX-WS.
• Consuming RESTful services to obtain client and credit card information using Apache HTTP Client.
• Creation of UI according to UX designs using HTML, Javascript and CSS and Apache Wicket.
• Validations of user inputs in JavaScript and Java.
• Support QA team on the testing of cross platform features.
• Development of error handling logic in Java
• Solution of issues during guarantee period.
• Implementation of Change Request to add support of legacy magnetic stripe cards.

Technology and tools used: Java, RCA, RTC, IBM Jazz, OpenMake, Unix, Perfecto Mobile, Websphere. DB2,EJB, Wicket, Spring Webflow, JPA, JaxWS, JavaScript, HTML, CSS, YUI,

Confidential

Senior Software Engineer.

Project: Epicor Retail/ERP Infrastructure

Project Description:

Maintenance and improvement of the common infrastructure used by the retail applications of Epicor. The infrastructure was made of a series of services implemented in C and Visual C

Responsibilities-

• Analysis and documentation of existing functionality.
• Migration of legacy C code to C .
• Implementation of new Infra Features to be consumed by the different app teams.
• Coordinate with QA and team members in different countries to solve infrastructure bugs.

Technology and tools used: MS Visual Studio, MS IIS, Oracle11g, C , C , WinApi, Several proprietary technologies.

Confidential

Proficient Software Engineer

Project: OXXO NPOS

Project Description:

A Point of Sale and Back office solution for a large retail chain. Java powered desktop and web applications for the complete management of individual stores, support for data distribution through the hierarchical organization of store and extensive financial and operational reporting to head offices.

Responsibilities-

• Development of gift card sell and register functionality in Java and Swing.
• Communicate with gift card provider through a SOAP Web Service.
• Reporting of Gift card related sales through a JMS Queue.
• Communicate with lottery provider through a RESTful Web Service.
• Creation of valid lottery tickets through the thermal printer with JavaPOS.
• Coordinate with QA and third party lottery provider to get a certification of correct implementation to enable the retail store to sell lottery tickets.
• Training of new hires on the complex architecture of the applications.
• Implementation of a service maintenance screen in Backoffice Web application to configure nonphysical goods and services using JSPs, Spring MVC and JQuery .

Technology and tools used:Java, Eclipse, SVN, Ant, HP QC, Tomcat, DB2, Open JMS, Servlet, JSP, JAX WS, Struts, iBatis, Spring MVC, Hibernate, Swing, XML, XSLT. HTML5, CSS3, Jquery, Bootstrap.

Confidential

Software Engineer

Responsibilities-

• Collaborated with senior engineers in the design of the solution.
• Creation of the prototype RESTful API in python for consumption of front end developers.
• Implementation of final RESTful API with JAX-RS
• Development of custom Java FX UI Controllers with support for validation
• Implementation of Database Entities in Hibernate.
• Deployment and configuration of dev, test and prod Linux environments.
• Participation in the Scrum ceremonies.

Technology and tools used:

Java, Eclipse, Git, Maven, Bugzilla, Tomcat, PostgreSQL.

JavaFX, Spring, JAX RS, Hibernate, JUnit

Confidential

Java Developer

Responsibilities-

• Participation in discussions of technologies and architecture to use.
• Analysis of requirements and solution designing
• Development of front end tasks , and required backend support.
• Database schema creation and maintenance.
• UI Implementation using JSF and PrimeFaces.
• Implementation of dynamic behavior through Ajax.
• Consumption of external services Google Maps .

Technology and tools used:

Java, Netbeans, MySql Workbench, Glassfish, Mercurial

EJB 3.0, JSF 2, JPA, PrimeFaces.

HTML5, CSS3, JavaScript, Jquery.

Confidential

Paid Internship Software Developer

Project: CITI Tabasco ERP Solution.

Responsibilities-

• Completion the project after the original developer left the company.
• Refactoring of existing C code base.
• Reverse engineering of some modules with no source code.
• Maintenance of the existing features and development of new ones.
• Design and implementation of database tables and normalization of existing ones.
• Documentation of delivered source code.

Technology and tools used:

MS Visual Studio, SQL Server Management, MS SQL Server, Team foundation service, IIS.

C , ASP.Net, HTML5, CSS3, Ajax.Net, JavaScript Jquery.