Renato D.

• Built software for a Fortune 500 firm in the global financial market across multiple teams and a top-rated U.S. benefits startup, with positive feedback on high service quality. • Collaborated closely with cross-functional teams, applying Agile methodologies and utilizing Jira. • Developed APIs in Node.js, Golang and Python, leveraging REST and gRPC for high-performance communication. • Built user interfaces using React, React Native, Expo, and Vue.js, ensuring alignment with UX design specifications. • Contributed to internal projects leveraging RAG-based AI solutions with vector databases and embeddings.

• Enhanced information loading speed by more than 40% through the implementation of static caching techniques;

• Led a project, resulting in over a 20% increase in client satisfaction by developing an integrated customer service system with multi-source client information;

• Delivered high-quality code on time by effectively managing project timelines and prioritizing tasks accordingly;

• Mentored developers, providing guidance on best practices and coding techniques for improved productivity.

• Developed Professional Dashboards and Mobile Applications for comprehensive business management;

• Developed Websites, Web Apps, SPA, iOS and Android apps;

• Led the development of an integrated marketing analytics system, enhancing client satisfaction by unifying multi-source customer data into a cohesive platform. • Optimized data loading performance by over 40% through the implementation of static caching techniques. • Consistently delivered projects on schedule by effectively managing timelines and setting clear priorities.

Skills • TypeScript, React, React Native, Next.js, Material UI (MUI), and WebSockets. • NestJS, Node.js, API Gateways, REST and GraphQL APIs, Webhook Integrations, Distributed Systems and Message Brokers (e.g. RabbitMQ). • System Architecture, Domain-Driven Design, Clean Architecture, Layered Architecture, Event-Driven Architecture, CQRS, Event Sourcing. • MongoDB, MongoDB Atlas Search, PostgreSQL, and Redis. • AWS, DigitalOcean, Vercel and Netlify.

• Implemented a subscription recurrence system with diverse integration of payment gateways and automated detection of currency, language and price based on the user's geolocation, improving business revenue by 35%;

• Developed a desktop application with reactive libraries and Electron, endorsed by professional Counter-Strike players like VSM and leo_drk.

• Implemented a subscription recurrence system with diverse integration of payment gateways and automated detection of currency, language and price based on the user's geolocation, improving business revenue. • Developed a desktop application with Electron, endorsed by professional Counter-Strike players like VSM and leo_drk.

• Developed SaaS platforms, professional websites, and live-stream/webinar pages with social chat functionalities;

• Identified and fixed security vulnerabilities in a major educational institution in Curitiba, PR, Brazil.

• Mordomos, personal finance assistant; Wedding Platform; Cred1000 Business Website (Financial Industry); A complete eCommerce integration, based on OpenCart; The biggest Minecraft Websites in Brazil.

• Developed eCommerce solutions using OpenCart, implementing custom integrations for some of Brazil’s largest gaming businesses, efficiently handling high-volume digital transactions, while ensuring seamless product delivery. • Developed the Mordomos SaaS platform, a personal finance assistant that enables users to manage budgets, set financial goals, and track progress for improved financial wellness. • Designed and launched business websites and real-time live-streaming pages. • Built an innovative invitation solution during the COVID-19 pandemic, incorporating guest management to streamline event planning. • Conducted security assessments for a leading educational institution in Curitiba, PR, Brazil, identifying vulnerabilities.

Skills • TypeScript, Node.js, Event-Driven Architecture (EDA), SQL Databases, Oracle Java, PHP, Laravel, Layout Design, HTML, CSS, and JavaScript.