Soil Lab System: Requirements refinement using User Stories in Azure DevOps, defining the system architecture using C4 Model, logical database model, and in the .Net framework 4.72 environmentTourism Rebate: Backend development in Spring boot, Java 11, and REST-API for Tourism Rebate. Developed profile management, rebate calculations, and payments. Defined database logical model for requested enhancements. Developed invoice upload in AWS S3 and consumed the AWS SES to send notifications. Created payment batch processing. Managed version in Git and deployed application hosted on AWS EC2.Support Tickets for PL/SQL and Oracle Forms: Resolved 40 long time issues opened in PL/SQL and Oracle FormNB Surplus Property Disposal: Developed the code and UI for the Purchasers, Lawyers, Legal Assistants, and Vendor management module in .Net 4.72.Bridge System Data Migration: Mapped data in Clipper to perform data cleaning and validation with the client and migrated data from Clipper to Oracle DB

- Transformed a system that annually controls 6 million SIM cards manufacturing into a commercial service - Reworked an application that manages 74 million telephone numbers to meet changing market trends - Integrated a telecommunication system to SAP and added features to support nationwide use in 25 states - Recognized by coordinator and co-workers teamwork, fast learning and excellent customer relationship skills - Participated in requirements gathering and design development meetings - Developed from concept through final delivery a Corporate Phone Billing Portal in a collaborative team - Guided business analysts to execute integrated tests and trained junior programmers - Worked in team-based Agile in a cross-functional environment following the Scrum - Performed troubleshooting, diagnostics and analysis to uncover root malfunctions in the production environment - Implemented database designs and data models - Provided technical documentation of deployment processes to help desk staff

- Supported 24x7 production system used in Brazil and Argentina resolving issues according to SLAs - Redesigned database query to fix a critical problem that DBA could not resolve - Analyzed system specifications to develop programs for computer applications in software maintenance - Performed research and analysis for new projects, proposals and system modifications - Coordinated with systems partners to finalize designs and confirm requirements - Identified issues within databases, performed troubleshooting and implemented effective solutions - Wrote test plans and test reports for quality assurance purposes - Converted business documentation to specs using technical writing

- Upgraded Oracle Forms application for billing and logistics in a newspaper company - Performed code review and troubleshooting to assure program integrity quality environment - Evolved system product through product development customer iterations - Recognized by team proactive attitude made a difference in the project with programming skills

- Upgraded system working onsite replacing a Senior Analyst - Participated post-implantation of a Point of Sale managing system - Resolved production issues and small fixes in QA procedures