João Fernandes

Lead the end-to-end architecture and development of a multi-tenant SaaS ecosystem, spanning backend services, administrative platforms, operational PWAs, and mobile-first applications.

Design and integrate AI-powered systems using LLMs, Model Context Protocol (MCP), Retrieval-Augmented Generation (RAG), and specialized tools to make operational data accessible through natural language.

Build and maintain integrations with external aviation services, telematics platforms, Google Workspace, and the WhatsApp Cloud API, connecting critical workflows across systems.

Develop scalable backend services and modern frontend experiences using TypeScript, Bun, React, PostgreSQL, and Tailwind CSS, with a focus on performance, reliability, and maintainability.

Drive technical decisions across architecture, automation, testing, and deployment, ensuring the platform can support multiple organizations and operationally critical workflows.

Developed multiple e-commerce web platforms, integrating external APIs and a dropshipping solution to enhance sales channels and operational efficiency.

Engineered a comprehensive task, machine, and worker management software for the molds industry, integrating with invoicing software APIs to streamline operations.

Built an automotive parts sales application with a robust API and database, enabling rapid import and consolidated display of thousands of parts from international scrap yards.

Created custom WordPress plugins and enhanced existing web infrastructures to meet specific client requirements for functionality and performance.

Contributed to the development and maintenance of scalable web applications, utilizing modern frameworks like Next.js and React.js to ensure high performance and responsiveness.

Implemented robust backend solutions with Python, Node.js, and Laravel, integrating databases such as MySQL and PostgreSQL to support critical business operations.

Collaborated with cross-functional teams to define technical requirements and deliver features, enhancing product functionality and user experience.

Applied best practices in code quality, security, and deployment using Docker, contributing to a stable and efficient development lifecycle.

Created diverse Grafana dashboards for energy and quality control, enabling real-time performance monitoring and data-driven decision-making.

Developed front-end snippets using HTML, JavaScript, and CSS to support web application functionality and user interface enhancements.

Managed, cleaned, and maintained MS SQL databases, ensuring data integrity and optimizing performance for critical business operations.