Senior Frontend Developer (Ai & Rag) / Spain

Capitole; Teletrabalho; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

A leading technology firm is seeking a Senior Front End Software Developer to join their innovative team. The role involves creating cutting-edge applications using React.js, collaborating across teams in AI projects, and integrating advanced AI technologies. Candidates must have strong experience with React, a solid background in full stack development, and hands-on experience with LLMs and RAG. This position is fully remote from Spain, offering opportunities for career growth and a diverse working culture.

Serviços

€1200 per year training budget

Private health insurance

Flexible working hours

Access to fitness and wellness support

Sponsored sports teams

Career growth opportunities

Inclusive company culture

Qualificações

• Strong experience with React.js at a senior level.
• Solid background in full stack development including React and Node.js.
• Hands-on experience with Large Language Models and Retrieval-Augmented Generation.
• Knowledge of Python for AI integrations.
• Experience with Docker and modern cloud environments.
• Ability to design scalable and maintainable software architectures.
• Strong communication skills with a solution-oriented mindset.
• English proficiency is mandatory.

Responsabilidades

• Build intuitive interfaces using React.
• Collaborate on end-to-end AI applications.
• Work with LLMs and emerging AI technologies.
• Design scalable frontend solutions.
• Integrate AI agents into real applications.
• Participate in Agile ceremonies.
• Support optimization of AI models and workflows.

Conhecimentos

React.js

Full stack development

Large Language Models

Python

Docker

AWS

Azure

Problem-solving

Autonomy

Communication skills

Ferramentas

LangChain

Vector databases

Descrição da oferta de emprego

Opportunity to work in SPAIN (Madrid or Barcelona)

About the role

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.

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 this project?

• People first – 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.
• Wellhub : access to fitness, wellness, and mental health support.
• ⚽ Football and paddle tennis teams sponsored by Capitole.
• Team buildings, global events, and strong tech communities.

✨ Want to know more about us? Click here and discover all the details.

Find out what people are saying about us on Glassdoor Reviews .

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.

Empowering People, Unlocking Innovation.

The employee will adhere to information security policies :

• Will have access to confidential information related to Capitole and the project they are working on.
• Must comply with the security policies and internal policies of the company and the client.
• Must sign an NDA.