Julian O. is a highly recommended Full Stack Developer and Electronic Engineer with strong experience in building scalable, secure, and intelligent web solutions, combining renewable energy and systems integration expertise with modern software engineering; he is proficient in JavaScript, Python, React, Angular, Node.js, Flask, Laravel, Spring Boot, PHP, TypeScript, HTML, CSS, SCSS, Bootstrap, Styled Components, Jest, MySQL, SQLAlchemy, Sequelize, JWT, JasperReports, Arduino, PLC, Matlab, and PVSYST, and is actively advancing in Generative AI, LLMs, automation, language model technologies, and the orchestration of intelligent frameworks and agents. At Grandtek, he designed modular architectures, led end-to-end development with unit testing, configuration management, deployment, and change control, and provided technical support to improve system stability. He has delivered impactful projects including an e-commerce platform for solar panels, a virtual library, and a virtual parking system with secure authentication, administrative dashboards, and robust backends. He holds a Full Stack certification from 4Geeks Academy and a degree in Electronic Engineering, is bilingual in English (C1) and Spanish, and has demonstrated strong problem-solving and performance optimization skills with a top-percentile assessment across algorithms and Angular-focused challenges.