Stone is one of Brazil's leading fintech companies, providing a range of payment services. I joined the team to assist in restructuring the group responsible for the company’s primary revenue source: the transactional component of the payment terminals.• Architected and migrated critical payment systems, replacing legacy systems, leading to a 90% reduction in bugs within the first year.• Optimized code quality standards, maintaining over 95% test coverage using Sonar, resulting in fewer production issues.• Enhanced team operations by developing and structuring logs, alerts, and dashboards via Splunk, leading to improved monitoring and enabling the collection of crucial performance and product metric, which contributed to data‑driven decision‑making.• Implemented CI/CD pipelines in Azure DevOps, successfully migrating on‑premise applications to the cloud with consistent performance.• Developed features for the company’s tool library, facilitating the use of jobs, middlewares, databases, messaging services, file processing, among others.Stack: C#, .NET, xUnit, RabbitMQ, PostgreSQL, MongoDB, SQL Server, Redis, REST API, Splunk, New Relic, Datadog, Azure DevOps, Microservices, Event‑Driven Architecture, Domain‑Driven Design (DDD), Test‑Driven Development (TDD).

At Iteris, a software consulting company, I worked on a project for Nutrien, a Canadian agricultural firm expanding into Brazil.• Spearheaded the backend development of a new e‑commerce platform, driving a 50% increase in project delivery speed.• Led a team temporarily, ensuring project continuity and meeting all key milestones during the team leader’s absence.• Developed and maintained microservices and front‑end applications from scratch using TypeScript, Node.js, Nest.js, React and React Native, contributing to the successful launch of Nutrien’s crop planning and e‑commerce modules.• Led the technical onboarding process for new members, significantly reducing the ramp‑up time.• Collaborated with the American team to ensure the effective operation of shared systems and libraries while aligning code standards.Stack: JavaScript, TypeScript, NodeJS, NestJS, Apollo GraphQL, REST API, React, React Native, HTML, CSS, PostgreSQL, Elasticsearch, Amazon Web Services (AWS), Microservices, Test‑Driven Development (TDD).

At Second Mind, a software consulting and development company, I worked on diverse projects across various industries, including energy, hospitality, agriculture, investment brokerage, and healthcare.• Led the end‑to‑end development of a custom web application for an investment broker, collaborating closely with the client to gather and validate requirements, resulting in a solution that fully automated previously manual processes and enhanced operational efficiency in 70%.• Developed a web application to manage critical internal processes, including contract generation, email communication, time tracking, burn‑down charts, and accounting. This approach not only improved efficiency but also gathered valuable analytics and metrics, which enabled data‑driven decision‑making in the company.• Developed a range of web applications, as well as Windows services and desktop applications.Stack: C#, ASP.NET MVC, .NET Core, Razor, RabbitMQ, SQL Server, MySQL, JavaScript, TypeScript, React, HTML, CSS, jQuery, REST API.

• Managed the company’s electronic assets.• Assisted in the creation and configuration of network and server infrastructure, supporting overall company growth.