Javier Sierra

Computer Engineer and Web Developer with extensive experience in the creation, scaling, and maintenance of digital platforms. Creator of Manerasdevivir.com, one of the pioneering music portals in Spain, online uninterruptedly since 1996.

Solid track record working with PHP, WordPress, JavaScript, and modern web technologies, applying SOLID principles, Clean Code, and Clean Architecture to develop scalable and maintainable solutions. Hands-on experience in Docker-based environments, CI/CD pipelines, Composer, PHPUnit, and TDD, ensuring code quality, testability, and robustness.

For some time now, I have adopted an AI-first approach, integrating assistants, language models, and semantic search techniques into real projects, combining traditional development with artificial intelligence to expand capabilities and efficiency.

I have been comfortable working in the Linux console for decades, allowing me to automate processes, manage servers, and optimize development and production environments with fluency.

I have led complex projects integrating external systems (REST APIs, Odoo, SharePoint), developed advanced WordPress plugins and themes, and managed large-scale data migrations.

Beyond the technical aspects, I bring creativity, problem-solving skills, and the experience of having maintained large-volume projects in production for decades. I am always open to new technologies (Node.js, Next.js, DevOps, Cloud) to continue evolving as a professional.

I am seeking opportunities to add value in modern web development, backend systems, cloud-native solutions, or AI-integrated projects, while continuing to learn and share knowledge within teams.