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We are looking for a Senior AI Full Stack Developer to join a global 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.

What you'll do
Design, develop, and maintain enterprise-grade Full Stack applications supporting a integral 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
Collaborate with multiple engineering teams working on shared codebases




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
Contribute to technical decisions, code reviews, mentoring, and engineering best practices

Must Have
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
Experience designing and integrating REST APIs
Hands-on experience building applications on AWS
Experience working with shared repositories usin

📌 Senior AI Full Stack Developer (Barcelona)
🏢 Capitole
📍 Barcelona