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# Senior Full Stack Engineer (Node.Js / React.Js)

- **Company:** Artificial Intelligence
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Artificial Intelligence, Amazon Web Services, Code Reuse, Continuous Integration, Cursor (Graphical User Interface Elements), Node.Js, Software Engineering, Systems Architecture, TypeScript, Web Applications, ReactJS, AWS Lambda, Backend, Git, Solid Principles, React Native, Front End Software Development, Serverless Computing
- **Published:** August 6, 2026
- **Apply:** https://www.buscojobs.com.es/senior-full-stack-engineer-node-js-react-js-en-barcelona-ID-365692330

## About the Role

5+ years
of total professional experience in software development.
Hands-on experience with
Serverless architectures (AWS Lambda)
.
Proficiency with
Git and CI/CD pipelines
for both mobile and web.
Deep practical knowledge of
SOLID principles, system architecture, and Clean Code
techniques.
Architectural Mindset:
Ability to balance
fast iterations with long-term scalability and stability
.
AI-First Mindset:
Experience using
AI tools (e.g., Cursor, Copilot)
to accelerate development cycles.
Fluent in Spanish and English (Mandatory)

## Description

We are an international technology scale-up in a strong growth phase, building our own product with a strong focus onArtificial Intelligence, Data and Automation.Our mission is to transform the way people invest in Real Estate by combiningAI, advanced analytics and technology. Operating across multiple international markets, we are entering a key stage of growth whereArtificial Intelligence will become a core pillar of both our product and engineering strategy.What will you do?Your mission as theFull Stack Engineerwill be to code alongside a high-performingremote team of ~5 engineers. You will act as the technical anchor for the team, driving a critical strategic transition: creating a unified codebase across Web(React),Backend(Node.js) and cloud (AWS).You will not only design scalableServerless architecturesand intuitive UIs but also foster a culture of technical excellence.Key responsibilities:Unified Architecture:Design a cohesive strategy for ourWeb (React/Node.js) platform,maximizingcode reuse and consistency.Robust Backend:Develop and optimize backend services usingNode.js, TypeScript, and Serverless architecture (AWS Lambda/SST)to ensurescalability and security.High-Quality Frontend:Oversee and contribute to the development ofresponsive web applications in Reactandmobile apps in React Native.Best Practices:Enforceclean, maintainable, and testable code, championSOLID principles, and drive adherence tomodern CI/CD workflows.Requirements:5+ yearsof total professional experience in software development.Hands-on experience withServerless architectures (AWS Lambda).Proficiency withGit and CI/CD pipelinesfor both mobile and web.Deep practical knowledge ofSOLID principles, system architecture, and Clean Codetechniques.Architectural Mindset:Ability to balancefast iterations with long-term scalability and stability.AI-First Mindset:Experience usingAI tools (e.g., Cursor, Copilot)to accelerate development cycles.Fluent in Spanish and English (Mandatory)What we offer:Competitive salary package.Hybrid work model with flexibility.Flexible working hours, focused on ownership and outcomes.23 days of paid vacation.Gympass membership:discounts on sports and wellness activities.Training and development opportunities.International, fast-growing product environment.Direct impact on product and business decisions.Modern tech stack with real autonomy to propose improvements.Agile culture, strong technical team, and quality-driven mindset.#J-*****-Ljbffr


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