Leandro Ximenes Bezerra Email & Phone Number

Federal District, Brazil

Brasília

Responsible for developing and maintaining essential web applications for the Corpo de Bombeiros do Distrito Federal, using modern technologies such as JavaScript, TypeScript, React.js and Next.js. Contributes significantly to the creation of systems that optimize operations and improve the provision of services to the community.Main projects:Incidents Management Web System: Development of a web platform for managing and monitoring incidents, facilitating registration, communication and decision-making in real time.Work Schedule System: Creation of a web system for managing work schedules, optimizing the allocation of human resources and ensuring adequate coverage on all shifts.Hydrant System: Development of a web application for mapping and controlling hydrants in the Federal District, helping with fire prevention and firefighting.Payroll Discount System: Implementation of a web system to manage payroll discounts related to health procedures, speeding up the process and ensuring accurate calculations.Technologies and Methodologies:Front-End: TypeScript, ReactJS, Next.js, JavaScript, Styled Components, HTML, CSS, tailwindBack-End: Node.js, Nest.js, PostgreSQL, PostGraphile, GraphQLMethodologies: SCRUM, KanbanBest Practices: Clean Code, TDDVersion Control: Git, GitFlow

Brasília, Distrito Federal, Brasil

Development of Hafen's investment platform, including login areas, registration, investment visualization, performance monitoring and communication with managers. Implementation of resources to present financial data in a clear and accessible way, facilitating investment decision-making. Integration with B3's API and implementation of the platform using AWS services.Technologies and Methodologies:Front-End: TypeScript, ReactJS, Next.js, JavaScript, Styled Components, HTML, CSSBack-End: Node.js, PostgreSQL, PostGraphile, GraphQLCloud: AWSMethodologies: SCRUMBest Practices: Clean CodeVersion Control: Git, GitFlow

Brasília, Federal District, Brazil

Responsible for migrating and modernizing Cabal Brasil's credit card billing system, converting legacy Cobol code to Java. I implemented essential functionalities, such as billing reports, purchase disputes and chargebacks, using PL/SQL to interact with the Oracle database. I demonstrated skills in analyzing legacy systems, Java development and optimizing financial processes.Main project:Billing Module Migration: I led the complete migration of the credit card account billing module from Cobol to Java, ensuring continuity of operations and improved system performance.Report development: I created detailed billing, purchase dispute and chargeback reports, providing crucial information for decision-making and monitoring financial operations.Technologies and Methodologies:Languages: Java, Cobol, PL/SQLFrameworks: Spring BootDatabase: OracleVersion Control: Git, GitFlow