Vinicius Lima Fernandes

Development of a recurring Pix product, ensuring its viability through collaboration with cross-functional teams. Currently focused on the FURY team, where I develop solutions aimed at reducing storage costs across Mercado Livre, leveraging AWS services for efficiency and scalability. Key Responsibilities: - Collaborated with teams to design and implement features for a recurring Pix product, currently processing several thousand BRL monthly. - Developed applications using a microservices architecture and event-driven design, ensuring high scalability. - Reduce storage costs across all company. - Optimized system performance to handle over 40 million requests per minute, focusing on fault tolerance and resilience. Key Achievements: - Successfully improved application performance and scalability through microservices implementation. - Worked collaboratively with the team to identify cost-saving opportunities, potentially saving millions of dollars for the organization. - Enhanced data storage and retrieval efficiency, contributing to overall operational excellence.

In the development of the independent debt import product, I was deeply involved in the design and implementation phases. My key contributions included: - Collaborative Product Development: Worked closely with cross-functional teams to gather requirements and define product specifications. - Scalability and Performance Focus: Enhanced the scalability and performance of the system to efficiently process imported data. - Data Consistency Assurance: Implemented robust validation processes to minimize discrepancies, ensuring accurate billing and meeting user expectations. Another significant project I contributed to was the automatic debit solution for Mercado Pago in Brazil. My key responsibilities included: - End-to-End Development: Engaged in the entire lifecycle of the product, from ideation to deployment in a production environment. - Microservices Architecture: Designed and developed multiple microservices, creating a robust and scalable event-driven architecture for real-time transaction processing. - Database Optimization: Utilized various databases, replicas, jobs, and caching strategies to enhance performance and deliver a seamless user experience. - Financial Accountability: Managed a system supporting hundreds of thousands of active users and processing millions of BRL in monthly transactions, ensuring reliability and security. - Collaboration with Cross-Functional Teams: Throughout the project, I worked closely with various teams, including product management, quality assurance, and customer support, to ensure smooth integration and successful deployment.

Actively involved in the vehicle consortium division, focusing on the development of the debt import system for our customer base. My key responsibilities include: - System Performance Optimization: Continuously conducting tests and iterations to identify and implement the ideal data model, significantly enhancing system performance. - Cross-Functional Collaboration: Collaborating with various teams to facilitate seamless integration, managing increased traffic volume effectively. - Handling Large Data Sets: Developing solutions to manage a customer base of over millions, ensuring accuracy and reliability in data processing.

Creating transaction statements for sellers involved building high-performance applications that ensured high availability for our users. Given the critical nature of these applications, I collaborated closely with cross-functional teams to deliver reliable solutions. Key Responsibilities: - Developed and maintained high-availability applications for generating transaction statements, ensuring optimal performance and reliability. - Managed multiple integrations with MySQL databases, ensuring efficient data retrieval and storage. - Worked with Java and Go programming languages to build robust back-end services. - Created scripts to automate and streamline daily operational tasks, improving team efficiency. - Led an important migration project, transitioning a segment of the application from a monolithic architecture to microservices, enhancing scalability and maintainability. Key Achievements: - Successfully delivered high-performance applications that consistently met user demand and operational uptime requirements. - Improved application reliability through effective database management and integration. - Streamlined daily operations by developing automation scripts, significantly reducing manual workload. - Played a key role in the migration to microservices, resulting in improved application scalability and reduced technical debt.

Assist the team in developing applications that are responsible for delivering data to the front-end (Backend for Frontend - BFF) within a microservices architecture. My work involves exploring innovative possibilities for applications using current AWS services. Key Responsibilities: - Collaborate with the development team to create and optimize BFF applications that effectively serve data to front-end components. - Design and implement solutions within a microservices architecture to ensure scalability and maintainability. - Explore and leverage AWS services to enhance application capabilities and performance. Assist in integrating APIs and data sources to provide seamless data delivery to the front end. Contribute to architectural discussions, offering insights on best practices for microservices and cloud deployment. Key Achievements: - Actively participated in team collaboration, fostering a culture of innovation and continuous improvement.

Construction improvements and management systems developer.

VBA and SQL linking info and making systems for a better reports and result interpretation