Senior Frontend Developer
Opportunity to work remotely from anywhere in Spain, with regular workshops in Madrid or Barcelona.
About the role:
Join a leading-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.
Key responsibilities:
* 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.
Mandatory Requirements:
* 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 our project?
* Diverse and inclusive culture in an international environment.
* Cutting-edge technologies and global projects.
* Career growth and continuous development opportunities.
* Happiness and low turnover rate.
* €1200 per year training budget and learning resources.
* Flexible compensation.
* Private health insurance and benefits package.
* Flexible working hours and hybrid model.
* Wellness support.
* Team sports and activities.
* Global events and strong tech communities.