David Ball Estrada Email & Phone Number

Baltimore, Maryland, US

• Role: Java Full Stack Developer Sr.Implementation Partner/Vendor: Artisys CorpProject Name: Child Support ApplicationProject Description: CSA is a web application of Human Services in State of Maryland to get.
• Analysis of the requirements to provide a solution implementing batch processed, DB Design, Backend API development and UI Design.
• Development of the requirements for CSA Financial Module and interfaces to connect with external agencies, handling payments, receipts, refunds, escrows, checks, banking interfaces, financial transactions.
• Worked developing Batch Processes to connect with external interfaces using Apache Camel and manage data for the application.
• Analysis, design, and development of our own Security Framework (RBAC/ABAC) for the application.
• Production support level 3 and improvement of application development.

Mclean, VA, US

• Freddie Mac. McLean VA Oct 2018 – Jun 2019Role: Java Developer Sr.Implementation Partner/Vendor: Hexaware TechnologiesProject Name: Infinity Project Description: My role as a Java Developer Sr was oriented to develop.
• Worked with the team and program workers to provide solutions for automation testing in pipeline and business rules validations in the Sales Application
• Developing of Production Validation Suite (PVS), it’s an application to validate with Automation Testing the Sales Application in production for Single Family Department.

CDMX, Mexico City, MX

• Role: Service Manager, Java Developer, Business Analysis, Test LeadImplementation Partners/Vendors: Softtek, Novutek, TCSEnvironment: Java 6, 7 and 8, JSP, Prime Faces for JSF, Struts, Spring, Spring MVC, Hibernate.
• Worked as a Service Manager for the IT Department (IMSS) in a project called BDTU (Unique Transactional Data Base), the main Oracle database of the Mexican Social Security Institute. Primarily tasks were to manage a.
• Worked as a Java Backend Developer and Service Manager in ADO IMSS Digital project, developing, Shell Unix processes and standalone applications for legacy sync to Big Data in Oracle Berkeley DB.
• Responsible for Application Maintenance Services (AMS) related to digital information services for the client, covering services with a 7x24x365 team.
• Worked in a project called ADO IMSS Digital as a Java and Unix developer in the Department of Information Services. The system processes information about patients and validates medical benefits to create data.
• Web Application development with J2EE using JSP, JSF, Prime Faces, Struts, Spring MVC, Bootstrap, HTML, Ajax and jQuery.

Monterrey, Nuevo Leon, MX

Role: Software Engineer (.NET)Environment: Visual Studio 2005, C#, Visual Basic.NET, ADO.NET, SQL Server 2000, IIS Web Server, Clear Case.

• Environment: C#, Visual Basic.NET, ADO.NET, SQL Server 2000, Oracle Data Base 7.0, IIS Web Server, Unix.Telcel Company, Mexico CityRole:.Net Developer/Data AuditorDescription: Telcel is a mobile Telecommunication.
• The company has the largest Mobile Network in Latin America. Worked as a Data auditor using Oracle and Unix, I was responsible for conducting audits to detect inconsistencies in the cellular information network.Mas.
• The Company is an investment fund, working as a.NET developer creating module in a web application used to manage investments. Technologies used included.NET, SQL Server 2000, DataSet and DataAdapter to handle Data.
• The company is the largest Petroleum Company in Mexico, participated in the development of a project about PEMEX debt and developed some modules in Visual Basic.NET and Oracle Data Base.