Yulieth Trejos Email and Phone Number

Develop new functionalities in the software, maintain the database system, fix bugs and test the architecture in the hotel and tourism application.Reduced bugs by 70% detected as critical in the billing and room reservation system of the hotel system using Delphi client server technology and SOAP API. Construction of a web booking engine in PHP, 100% functional, which can interact with the client application through API REST, JSON, PostgreSQL, which made reservations and fed the interoperability of rooms available, occupied, reserved and their respective rates and payments in real time on the web.Implementation of multiple functionalities within the client and web application, with API and Webservice connections to link, import, export or share data between external and internal accounting, electronic billing, micro services between applications to download electronic billing certificates, block billing, accounting for consortia, waitress platform, inventory system, etc. allowing to increase sales by 25%.Development of functions in the application and in the database that allow support agents to reduce their response times to tickets and installations by 20%. Detection through manual tests of critical errors that affect the application's response times, reducing failures by 30%. Optimization of the firebird database of the client application by 20% and incorporated new SQL queries with more efficient complexity.Participation and creation of validations in the changes presented according to the electronic invoicing rules of my country, through XML and SpringBoot. *Tech Stack: Delphi, PHP, Java, Sprintboot, XML, JSON, SOAP, API REST, GITHUB, JIRA, BITBUCKET, Apache, Firebird, PosgreSQL, MySQL, Android, Quickreport.

I implemented and developed a disease control and prevention system for hospitals for different regions of the country that are far from first level clinical centers, improving the web application by 20% with J2EE, JSP technologies.I managed the database reducing system failures and bugs and SQL queries by 10%, in everything related to the administration of a hospital system such as system users, system clients, scheduling, billing, medical records, administrative reports, medical consultations and laboratories.Performed system enhancements reducing bugs by 20%, Performed testing and bug fixes in the web application for most of the functions of the hospital system, optimizing billing times and customer service through the medical records in the medical offices.Tech Stack: Java, JSP, JavaScript, J2EE, jQuery, jasper viewer, PostgreSQL, JSON.