We are looking for a Senior AI Full Stack Developer to join a integral team responsible for the end-to-end ownership of a worldwide B2B platform. In this role, you will design, build, and maintain high-performance, scalable, and secure web applications that support business-critical digital commerce solutions. You will collaborate with international engineering teams, contributing to a modern cloud-native architecture while ensuring excellent user experience, reliability, compliance, and operational efficiency.
Design, develop, and maintain enterprise-grade Full Stack applications supporting a global B2B platform
Build modern frontend applications using React and Next.Js
Develop scalable backend services and REST APIs using Node.Js and/or Java Spring Boot
Build and deploy cloud-native applications using AWS
Deliver high-quality software following clean architecture and software engineering best practices
Optimize application performance, scalability, security, and reliability
Implement unit, integration, UI, and automated testing strategies




Contribute to CI/CD pipelines and modern DevOps practices
Participate in Agile/Scrum ceremonies and cross-functional product teams
Collaborate with architects, product managers, UX designers, QA engineers, and international stakeholders
5+ years of experience as a Full Stack Software Engineer
Strong experience with React and/or Next.Js
Experience developing backend applications using Node.Js and/or Java Spring Boot
Strong knowledge of JavaScript, TypeScript, or Java
Hands-on experience building applications on AWS
Experience working with shared repositories using GitHub
Experience implementing unit, integration, UI, and automated testing
Experience working in Agile/Scrum environments
Strong software engineering fundamentals, problem-solving skills, and collaborative mindset
Fluent English (mandatory)
Experience integrating LLMs, Generative AI, RAG, or Agentic AI into web applications
Experience with data pipelines and AI-enabled ba

📌 DESARROLLADOR/a Senior FULLSTACK ó FRONTEND. (Cataluña)
🏢 Capitole
📍 Cataluña