David Sosa Email & Phone Number

St Petersburg, Florida, United States

Private investigations and background check industry. Responsible for Software Development (SDLF) including requirements gathering, analysis, modeling, architecture design and development of IDPursuit applications.● Implementation of Authentication and Authorization using Spring Security 6, OAuth2 and Authorities (Roles and Privileges). Authorization Server to generate opaque/refresh tokens using custom encryption and custom token introspection as well as self-signed JWT/access tokens with custom JTI generation. Resource Server to protect access to APIs and endpoints. Stateless Security backend/mobile friendly.● Development of microservices using Java 17, Spring Boot 3.x, Spring Transactions, Spring Data JPA, Hibernate 6, Caffeine Cache, MySQL, AWS, Elastic Beanstalk, Application Load Balancer, EC2, S3, Route 53, Certificate Manager, WAF & Shield, CloudWatch.● Development of internal and external APIs using Spring Framework/REST Web Services/FasterXML-Jackson JSON and secured using Spring Security 6. File upload endpoints using Apache Tika for file validation.● Development of scheduled tasks using Spring Scheduler, Cron Expressions, Shedlock.● Reporting/Spreadsheet generation using Apache POI.● Implementation of notifications using Thymeleaf templates.● Implementation of frontend using Angular 17. Development of custom controls (toaster, pagination, file upload, timer, idle service) and directives (custom validators, autofocus). Custom Guards and Authorization Service. HTTP interceptors to handle Authorization headers, refresh/access tokens, Http retry logic. Lazy loading of modules.● Development of custom Background Check/Investigative platform. Custom configuration of products and feeds from different providers. APIs based on SOAP Web Services/WSDLs with ability to push delivery of results. Custom billing engine. HR-XML standard. Heavy use of XSLT and XML parsers. Reports generation using Jasper Reports.

Riverview, Florida, United States

Telecommunications industry. Redesign and Development of Carl Application (later become Prism after Charter Communications acquisition) to track the process of construction projects, and CDMS application to manage contracts, revenue shares in associated properties. Participated in enhancing customized solutions in Salesforce. Java, J2EE, Apache Tomcat, Spring, Struts 2, Hibernate, Jasper Reports, SOAP Web Services, XML, XSLT, JSP, JavaScript, jQuery, AJAX, Salesforce, Apex, Visualforce, Oracle, Eclipse, Maven, Subversion, Unix, Windows.

Tampa, Florida, United States

Automotive IoT industry. Developed Android App to interact, acquire, and upload data from a bluetooth device connected to the car. Created OAuth2 for the Connected Car API. Participated in doing maintenance and enhancements to the Carvoyant Dashboard web application. Java, Java EE, Groovy, Grails, Tomcat, Android Platform, Spring OAuth2, JavaScript, jQuery, AJAX, JSON, XML, MySQL, Eclipse.

St Petersburg, Florida, United States

Human Resources and Background check industry. Implemented SAML SSO layer for integration with major financial and banking institutions. Developed Weblogic Service Bus integration with major credit companies. Implemented a Tax Engine for sales tax processing through a third party provider. Actively participated in architecting and upgrading the CSP platform: upgraded billing engine application and Darwin service fulfillment application from Java 1.4/JBoss 3.2 to Java 1.6/JBoss 6;upgraded ScreenDirect to Weblogic 11g and Java 1.6. Java, Java EE, Weblogic, Oracle Service Bus, JBoss, Tomcat, Axis Web Services, SAML, SOAP, XML, XSLT, EJB, MDB, JMS, Oracle, JIRA, Remedy, Eclipse, Ant, CVS, Unix, Windows.

Tampa, Florida, United States

Reviewed specifications, design and analysis, development and testing of project modules as well as involved in discussions pertaining to business and technical requirements. Refactored API from EJB facades to Web Services. Upgraded AAI to Java 1.6/Tomcat 6.0x and Weblogic 10.3. Upgraded Weblogic specific code and deprecated classes, and refactored JMX management code to use Java JMX standard API. Enable clients to consume Web Services from the mainframe and third party providers. Upgraded ANT build script to build the new AAI application. Provided technicalleadership on the project. Java, Java EE, Weblogic, Tomcat, Web Services, JWSDP, SOAP, XML, EJB, MDB, JMS, Oracle, DB2, Toad, Eclipse, ANT, CVS, IBM AIX Unix, Windows NT.

Tampa, Florida, United States

Eclipse Plug-in Development. Responsible for the design, development and maintenance of Skyway Visual Perspectives, a set of Eclipse-based modeling tools for rapidly producing highly scalable JavaEE web applications and services using the Spring framework and a model-centric approach to development, testing and deployment. Added new functionality for the refactoring (renaming, moving and copy & paste of objects) and the persistent layer (writing invalidators, dealingwith data types relationships, importing tables with mixed case identifiers, etc). Participated in architecture changes to allow code generation using a user-specified Java package and to integrate Maven with Skyway Builder. Java, Java EE, Spring, Hibernate, Web Services, Apache Axis, Groovy, Eclipse Modeling Framework (EMF), Eclipse Web Standard Tools(WST), Standard Widget Toolkit (SWT), CVS, Maven, JIRA, myriad application servers and DBMS.

Tampa, Florida, United States

Airline industry. Responsible for stabilizing and improving performance of the application: identification of major architectural issues, re-architecture of the core application to support clustering and concurrent processing. Responsible for design and development for the airline provisioning and catering web-based service order application. Refactored and redesigned functionality to improve performance and meet new business requirements. Rewrite of major user functions within the portal application. Implemented Web Services, JMS Queues, MDBs, XML Schemas (XSDs), and revised the interface with SAP XI (IDocs). Awarded Consultant of the Quarter - 1st Qtr 2008. Java, Java EE, Spring, Hibernate, Velocity, Struts, Jasper Reports, Web Services, EJBs, MDBs, JDBC, JMS, XML, JBoss, PL/SQL, Quartz, MyEclipse, Maven, Accurev, JIRA, Toad, Oracle 9i, Linux, SAP XI.Awarded Consultant of the Quarter – 1st Qtr 2008

Havana, Cuba

Maritime shipping industry. Managed IT resources and projects across the Antares group of maritime shipping companies - a team of 4 lead engineers and 16 engineers. Responsible for development, maintenance and enhancement of Mar America’s business applications and databases supporting Finance and Accounting, Operations, Commercial, Human Resources, and Inventory functions. Java, Java EE, JBoss, JSP, AJAX, Stateless Session Beans and DAO, MySQL, POJOs, JDBC, JMS, EJB 2.1, JPA 1.0, EJB 3.0, C++, Gupta SQLBase, ODBC, Crystal Reports.