João Victor Perin Email & Phone Number

Working as a developer on the Master Data Management (MDM) platform.

Fullstack developer working at "Core Checking Account" squad at BV Bank (Banco Votorantim).The squad is responsible for maintaining and expanding the operation of checking accounts and bank statements, dealing with tables and microservices widely used by various areas of the bank, like the Pix and Open Finance.Among the activities performed, the emphasis is on the creation and maintenance of highly-used microservices, as well as the development of batches responsible for processing millions of data entries every day. The team also has direct involvement in critical processes such as the bank's accounting date turnover, account creation and closure, bank statement generation, among others.• Completely integrated environment using Jira and Bitbucket for tracking user stories, tasks, SCRUM/Kanbam boards and code commits/pull requests• Confluence for business and technical documentation• A complete CI/CD process using Jenkins, and Spinnaker for deploying.• Mainly using Java with Spring Framework for coding• Angular 7 with TypeScript for frontend web tasks, and Flutter for mobile tasks• The entire Google Cloud Platform (GCP) for deploying scalable microservices with Docker+Kubernetes, and a lot of GCP tools, like Firestore and Pub/Sub queues.

Flutter Mobile Developer working on the credit/loan products of the digital bank's app for the physical persons at BV Bank's.Engaged in both project development and maintenance, focusing on products such as Personal Loans, Easy Loans, and FGTS Loans.• Flutter for Android and iOS hybrid app development• MobX for state management• Metalon as the design system, a component library created by the bank and based on Material's

Fullstack Developer working on the digital channel's projects at BV Bank (Banco Votorantim).• Spring Boot / Spring Framework • RabbitMq queues• Apache Camel for microservice orchestration and routing• Angular 7 and Angular 11 in frontend projects• Microservices-based infrastructure, giving each kind of service their own responsibility (BFFs, Orchestrators, and Atomic Services)• Hexagonal architecture on the backend appsAmong the developed projects, a notable achievement was the creation of a web portal for issuing and viewing income statements for individual investors of funds managed by BV Asset. For the frontend, Angular was used to build a micro frontend (embedded in the public area of the BV website), and for the backend, Java/Spring was used in the involved microservices, and JavaBatches for the heavy processing.

Novo Hamburgo, Rio Grande Do Sul, Brasil

Tech Lead/Developer of the Infra-Web Team, where I kept developing while also took on responsibilities such as:• Analysis and prototyping of new features related to Cloud/Web technologies• Configuration and complete deployment of services on AWS using ELB, EC2, S3, SES, etc.• Containerization of applications using Docker and DockerCompose, both in the development environment to ensure agility and in the production environment to enable horizontal scalability through container execution• General support to the development team, including defect identification and correction, codebase structuring, demand analysis, and assistance/problem-solving through Pair ProgrammingI took part in creating a framework of various internal libs to abstract complex concepts common in web paradigms, aiming to ease the integration of COBOL developers into Web/Cloud projects. I also conducted training sessions to introduce Spring Framework to interested developers in the company. A notable feature of the framework was a GraphQL-like interpreter for complex filter expressions into JPA Predicates, enabling the use of a friendly and concise syntax to perform advanced filtering on any table mapped in the ORM. Example: GET /api/v1/product?q=active is true and (brand.code eq 3 or brand.code gte 10)The project utilizes Antlr for AST generation through grammar files (developed by Rech).I also had the opportunity to lead a technical project in which the SigerAPI was developed—an API that provides direct integration with the SIGER ERP via HTTP/REST, simplifying system-to-system integrations and replacing outdated EDIs.We built a Node/TypeScript application serving as an API Gateway, which connects to a Spring service via WebSocket that interfaces with the SIGER ERP database using JPA and communicates with the SIGER ERP system.

Rio Grande Do Sul

I kept working as a developer and had an experience as the Scrum Master of the Web Team. In addition to these responsibilities, I took charge of tasks such as:• Maintaining the entire build system, testing, and CI/CD pipeline for both web and mobile projects• Ensuring database and applications integrity at production environment, using AWS services like EC2, RDS, and S3• Onboarding and training new team members in the development team• Implementing a continuous improvement process through the SCRUM framework, including routines like daily meetings, sprint retrospectives, sprint reviews, etc.• Researching new technologies for using in future projects, where I began learning about containers and DockerFurthermore, we initiated a project for developing a Web Communication Portal, where I played a significant role by:• Creating a RESTful WebService using technologies such as the Spring Framework, JPA, and MySQL• Developing the frontend of the project using Angular 8• Configuring an internal staging environment using Linux VMs for both the database and the application itself. I was involved in everything from continuous integration (using Jenkins) to setting up the machines and creating services and sh scripts to deploy the applications.

In addition to the previously mentioned tasks:• Development of a hybrid mobile application using Ionic and AngularJS technologies, deployed for Android and Apple phones and Tablets• Creation of command line scripts to automate or streamline repetitive tasks, using Ruby and Windows Batch technologies

As an intern, I had COBOL lessons, and after the training offered by the company, I had the opportunity to join the Web Team, responsible for creating separate Web modules to integrate with the main company product, the SIGER ERP system (written mainly in COBOL and Java). At the web team as intern, I had the roles:• Development and maintenance of a Web sales system, written in Java EE with technologies like VRaptor4, JSP, MySQL, Javascript, CSS, jQuery, etc.• COBOL routine development for integrating the SIGER ERP system with the web system, by using EDI based approaches.

Bachelor'S Degree, Computer Science

High School Diploma, Industrial Electronics Technology/Technician

Projeto e Desenvolvimento de Inversores e Soft Starter Trifásico Trabalho de Conclusão na área da automação residencial utilizando.