Full Stack Software Engineer SYSNET Ltda
• Led end-to-end architecture and development of scalable web applications and microservices using React.js, Next.js, Node.js, and NestJS with TypeScript.
• Designed and implemented secure RESTful and GraphQL APIs with JWT authentication and role-based access control (RBAC), reducing endpoint response latency by over 25%.
• Modeled and optimized relational and NoSQL database schemas (SQL Server, PostgreSQL, MongoDB), applying indexing and Redis caching strategies for datasets exceeding 100,000 records.
• Built comprehensive automated testing suites with Jest and React Testing Library, upholding an 80%+ test coverage to ensure software reliability and prevent regressions.
• Enhanced frontend rendering speed via Next.js SSR/SSG, code splitting, and lazy loading, significantly improving Core Web Vitals and user experience.
• Automated deployment and continuous integration (CI/CD) pipelines using Docker and GitHub Actions on Linux environments, standardizing environments across staging and production.
• Collaborated proactively in cross-functional agile squads (SCRUM) alongside Product Managers, UX/UI Designers, and QA engineers.