Jaqueline Victal

As a mid-level developer, I am responsible for answering technical questions, developing and evolving legacy applications, and actively participating in technical and architectural decisions for new applications. I played a key role in the migration from a monolithic architecture to a microservices-based architecture, contributing to the modernization and scalability of the system. Technologies, Tools, and Methodologies: I worked on developing Python libraries to integrate with partner companies’ devices, enabling data collection and command execution through various communication protocols such as MODBUS, BACnet, MQTT, among others. Additionally, I was responsible for building and maintaining the system’s alert feature, which monitors device data and sends automated notifications to users based on user-defined rules.

About Mercafacil Mercafacil leverages technology to understand consumer buying behavior and turn that insight into increased sales for retailers. It goes beyond traditional systems with a creative and functional approach to data-driven decision-making. My Role and Contributions As a Mid-level Back-end Developer on the CBM Team, I work on designing, building, and maintaining scalable systems using Python and TypeScript. My daily responsibilities involve working with microservices architecture, Kafka, Redis, ClickHouse (SQL), and MongoDB, as well as implementing automated testing strategies (unit, integration, and end-to-end). I'm actively engaged in feature refinement, code reviews, and Kanban-based agile practices. During my time at Mercafacil, I have contributed to: Enhancing and maintaining the cashback feature, ensuring performance, reliability, and alignment with business goals. Developing strategic business reports, such as: Incremental Revenue Reports, which help stakeholders measure growth from specific campaigns and actions. RFV Reports (Recency, Frequency, and Monetary Value), enabling clients to better understand customer behavior and support targeted marketing and retention strategies. These solutions were built on top of historical consumption data and have played a vital role in delivering meaningful insights to our retail partners.

Experienced Back-end Developer with a solid background in building and maintaining scalable systems using JavaScript, TypeScript, Node.js, and modern frameworks such as NestJS. Proficient in working with GraphQL, REST APIs, Prisma, TypeORM, MongoDB, RabbitMQ, and Jest. Skilled in designing and testing microservices architectures, with practical experience in unit, integration, and end-to-end testing. Strong advocate of clean code, TDD, and functional programming. Familiar with agile methodologies (Scrum and Kanban) and development best practices, including Git, Docker, observability tools (e.g., Grafana), design patterns, and SQL. Comfortable navigating both back-end and full-stack environments, with additional experience using Angular, Kafka, and .NET Core. At Tegra, a software house, I contributed to cross-domain projects, including: - A customer and order management system for an auto repair shop; - A recruitment platform designed to streamline hiring processes; - An industrial monitoring and energy efficiency platform to support data-driven decision-making; Key Technologies & Tools: Grafana · REST & GraphQL APIs · Prisma · Jest · NestJS · Git · System Architecture · TypeORM · Docker · Kanban · Python · Back-end Development · JavaScript · Clean Code · Node.js · Scrum · SQL · .NET Core · Design Patterns · Microsoft SQL Server · Kafka · Integration Testing · RabbitMQ · MongoDB · Angular

• Conducted investment analysis in Trade to ensure resource optimization and compliance with trading guidelines. Developed Power BI Dashboards for monitoring pilots and analyzing results, providing strategic insights to the team. • Managed relationships with third-party companies, ensuring smooth and efficient communication for service and project execution. • Responsible for managing improvements to the company's B2B platform, collaborating with a multidisciplinary team of professionals involved in development. Maintained effective and aligned communication among stakeholders to ensure project success.

• Utilization of various project management methodologies aimed at increasing productivity, reducing costs, and minimizing errors through the development of strategic solutions and tools, as well as managing internal process change. • Training on continuous improvement based on methodologies such as Lean, Kamishibai, Design Thinking, and Agile methodologies like Scrum and Fast Work.