Joasimonson Araújo Email & Phone Number

Dublin, Ie

Dublin, County Dublin, Ireland

Supporting a large legacy transformation project, redesigning and reimplementing a legacy burning platform onto a modern .NET stack, including .NET Core, SQL Server, CLI applications, Control-M Orchestration Workflow, Azure etc.- Played a key lead role in the development of a comprehensive system designed to carry out critical payments for customer claims.- Collaborated with cross-functional teams to gather requirements, design system architecture, and ensure seamless integration with existing systems.- Architected and implemented standardized batch job models, translation of CLI program parameters dynamically to Stored Procedure calls, logging strategy with NLog, dependency injection and unit/integration test architecture with NUnit and multiple mock libraries to limit test boundaries.- Utilized Entity Framework and Dapper for efficient data access and manipulation (SQL Server), ensuring high performance and scalability.- Workflow orchestration of batch suites in Control-M to execute during schedules previously configured, setting up customized calendars, holidays etc. to queue up client claims.- Developed CLI programs to enable and integrate multiple services between Manual Operators, Batch Orchestration and external applications to make batch execution concise and to avoid user interactions and reduce issues.- Conducted code reviews, implemented best practices, and provided mentorship to other developers.- Collaborates with DevSecOps team to ensure adherence to the package lifecycle and branching structure, facilitating seamless test and production environment deployment. This allows full Continuous Integration and Continuous Deployment (CI/CD).- Extensively utilized Azure DevOps & Artifact Management to ensure clean code development met Quality Gates (code coverage and vulnerabilities) using SonarQube and Nexus lifecycle.

São Paulo, São Paulo, Brazil

- Key contributor in the development of an Internet Banking System for Businesses and Individuals aimed at transforming customer experience and eradicating legacy systems through strangulation strategy.- Developed key features such as Instant Payments (PIX) which at the time was a new technology designed by the Brazil’s National Central Bank to shorten compensation payment time to 10 seconds.- Implemented robust infrastructure to handle dynamic requests, data access (SQL Server), Cache (Redis), logging strategy (Serilog), unit and integration tests, using dependency injection, builders, XUnit/NUnit and multiple mock libraries to set boundaries.- Implemented pipelines and integrated multiple repositories to ensure adherence to DevSecOps lifecycle and branching structure with quality gate and unit/integration test internal standards (Sonar, Snyk), facilitating seamless test and production environment deployment as part of SDLC.- Ensured data security and compliance with industry and national regulation standards through rigorous testing and validation as an acceptance criteria into SDLC.- Implemented back-end and front-end distributed through docker containers on Kubernetes, Angular and ReactJS in a microservices architecture to ensure modularity and ease of maintenance.- Utilized Angular, ReactJS and React Native to create a user-friendly front-end interface, adhering to Design System standards. Implemented Jest for unit and integration tests, using builders and mock servers to provide API data and set boundaries.- Conducted in-depth analysis of system behavior, performance, architecture, and overall quality, identifying vulnerabilities and optimizing security processes.- Collaborated closely with internal development teams to design scalable system architectures, ensuring seamless integration with back-end services, while implementing best practices, which resulted in improved system performance by 40%.

São Paulo, Brazil

Business analysis, process mapping, requirements gathering, project management and development in general, database prototyping, documentation, user training, monitoring, and post-implementation system support.- Responsible for several projects with individual rules, wealth management, e-commerce, ticketing, event control, integrations with various modules, and main and auxiliary processes to the company's central ERP, mobile applications, etc.- Responsible for the development of a platform and integration components with the Internal Revenue Service.- Developed and maintained a robust invoicing system integrated with the company's ERP for seamless management of service and product billing.- Created custom patterns and templates within the invoicing system to accommodate distinct invoicing rules for services and products.- CI/CD Workflow Enhancements - Migration from TFS legacy to an on-premises Azure DevOps instance, establishing robust CI/CD pipelines with quality gates as an integral part of the SDLC.- Developed a user-friendly mobile app-interface proprietary Sales Mobile App for Sales Agent, Consultant and Distributor for taking over majority of sales closed through phone calls.- Distributed React Native App via Expo to Play and Apple Store as part of SLDC.- Integrated multiple payment methods through payment gateway APIs.- Conducted code reviews, implemented best practices, and provided mentorship to junior developers.

São Paulo, Brazil

Business analysis, process mapping, requirements gathering, project management and development in general, database prototyping, documentation, user training, monitoring, and post-implementation system support (CRM, Purchasing, Financial, Inventory, Taxes, Asset Maintenance Control, Industrial Production Process).Participation in the development of a platform and integration components with the Federal Revenue.

São Paulo, Brazil

Business analysis, process mapping, requirements gathering, project management and development in general, database prototyping, documentation, user training, monitoring, and post-implementation system support (Focusing on CRM, Purchasing, Finance, Inventory, Taxes, Asset maintenance control, Industrial production process, Integrations with customized e-commerce systems).Technical team leadership, coordination of project activities in general, assistance with recruitment, and training of new team members.

São Paulo, Brazil

Development, prototyping of databases, documentation, user training, support, and monitoring of ERP system (Focusing on CRM, Purchasing, Finance, Inventory, and Taxes).

São Paulo, Brazil

Coordination of activities related to the school's IT center, instruction of users and teachers on IT flows and processes.

São Paulo, Brazil

Responsible for inventory control, issuing product invoices, and general documentation of controlled products required by government agencies.

Computer Engineering Postgraduation, Information Technology

Software Engineering: Focus on design, development, and maintenance of software systems, emphasizing best coding practices, testing.

Systems Analysis, Computer Systems Analysis

Concepts covered throughout the course: • Software management, planning, and analysis techniques for corporate demands • Identification.

Computer Technician, Computer Maintenance & Programming

Course focused on software development for small and medium-sized companies and maintenance of computers and networks. Tools used: Visual.