Senior Full Stack Engineer (Node.js / React.js)

We are an international technology scale-up in a strong growth phase, building our own product with a strong focus on Artificial Intelligence, Data and Automation.

Our mission is to transform the way people invest in Real Estate by combining AI, advanced analytics and technology. Operating across multiple international markets, we are entering a key stage of growth where Artificial Intelligence will become a core pillar of both our product and engineering strategy.

What will you do?

Your mission as the Full Stack Engineer will be to code alongside a high-performing remote 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 scalable Serverless architectures and intuitive UIs but also foster a culture of technical excellence.

Key responsibilities:

• Unified Architecture: Design a cohesive strategy for our Web (React/Node.js) platform, maximizing code reuse and consistency.
• Robust Backend: Develop and optimize backend services using Node.js, TypeScript, and Serverless architecture (AWS Lambda/SST) to ensure scalability and security.
• High-Quality Frontend: Oversee and contribute to the development of responsive web applications in React and mobile apps in React Native.
• Best Practices: Enforce clean, maintainable, and testable code, champion SOLID principles, and drive adherence to modern CI/CD workflows.

Requirements:

• 5+ years of total professional experience in software development.
• Expert proficiency in the JavaScript/TypeScript ecosystem: React.js, Node.js.
• 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)

What we offer:

• Competitive salary package.
• Flexible remuneration plan (health insurance, meal vouchers, transport, childcare).
• 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.