I am Jhonatan Ferreira, a Full Stack Engineer with 7+ years of experience designing and maintaining scalable web applications.
I am Jhonatan Ferreira, a Full Stack Engineer with 7+ years of experience designing and maintaining scalable web applications. I specialize in Laravel (PHP), Angular (TypeScript), and Python, and I have built backend APIs, distributed systems, and high-performance frontend apps across complex business environments.
Recently I’ve been focusing on AI integration and RAG-based solutions that leverage Large Language Models to automate workflows and enhance user experiences. I’m passionate about solving tough technical problems, collaborating with cross-functional teams, and continuously improving code quality through reviews and testing.
AI-powered task management platform with drag-and-drop workflows, semantic tagging, and LLM-based content generation. Built with Angular, Laravel, and Python, featuring RAG-based context retrieval and Dockerized infrastructure for scalable development.
Architected and developed scalable microservices using Python (FastAPI) and PHP (Laravel) within a distributed Docker-based environment. Built Angular front-end applications integrated with asynchronous microservices using RabbitMQ, supporting complex distributed workflows. Collaborated in code reviews, testing, architecture discussions, and technical decision-making with Agile teams. Managed MySQL, MongoDB, and AWS S3 integrations for scalable document processing and distributed data handling. Investigated and resolved complex cross-service production issues through deep debugging, reverse engineering, and analysis of legacy and distributed systems. Developed unit tests and contributed to the evolution and maintenance of large-scale applications with minimal supervision.
Contributed to the modernization of a large legacy Flash application into a modern Angular + Laravel platform with redesigned architecture and UI. Developed and maintained complex business-critical features, APIs, Angular components, and PostgreSQL queries/functions across multiple large-scale applications. Independently led standalone projects, handling architecture, backend development, database design, debugging, deployments, and production support with minimal supervision. Troubleshot undocumented legacy systems, resolved complex production issues, and maintained legacy AngularJS/Angular 2 applications during modernization initiatives.
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