Smadex, a cutting-edge ad-tech company, is seeking a full-time engineer to join our Barcelona team. You will help build scalable backend services with Node.Js and contribute to AI-driven automation using Lang Chain and AWS Bedrock.This hybrid role requires a solid foundation in web app development, knowledge of Angular/Type Script or Node.Js, and a curiosity for AI. You will own features from architecture to deployment while maintaining security and data integrity.