Senior Frontend Developer (AI & RAG)

We are looking for a Senior Front End Software Developer to join a cutting-edge team focused on scaling AI assets and building innovative AI-driven products. You will work at the intersection of LLMs, agentic architectures, RAG systems, and modern application development, contributing to the next generation of intelligent interfaces and document-understanding solutions.

In this role, you will collaborate with cross-functional teams, shape new AI-powered applications, and help bring state-of-the-art machine intelligence into real-world products used across the organization.

This position can be fully remote from anywhere in Spain, with monthly workshops in Madrid or Barcelona.

? What will you do?

? Build intuitive, responsive, and modern interfaces using React.

? Collaborate with backend, AI, and product teams to deliver end-to-end AI-powered applications.

? Work hands-on with LLMs, RAG architectures, LangChain, and emerging AI technologies.

? Contribute to the design of scalable and maintainable frontend solutions.

? Integrate AI agents, embeddings, vector databases, and retrieval architectures into real applications.

? Participate in Agile ceremonies and work closely with stakeholders to present, explain, and iterate on solutions.

? Support experimentation, prototyping, and optimization of AI models and workflows.

? Strong experience with React.js (Senior level).

? Solid background in full stack development (React + Node.js).

? Hands-on experience with Large Language Models (LLMs) and Retrieval-Augmented Generation (RAG).

? Knowledge of Python (for AI integrations).

? Experience with Docker and modern cloud environments (AWS and/or Azure).

? Ability to design scalable, reliable, maintainable software architectures.

? Strong communication skills, autonomy, and problem-solving mindset.

? English: mandatory.

Nice to have

? Practical experience with LangChain (highly preferred).

? Familiarity with AI model deployment, inference optimization, and agentic workflows.

? Experience integrating vector databases or embeddings-based search.

? Previous work in Agile or cross-functional product teams.

? Why join this project?

? People first - diverse and inclusive culture in an international environment., ? If you're passionate about AI, enjoy building seamless user experiences, and want to contribute to products powered by the latest advances in LLMs and agentic architectures - we would love to meet you.