Senior Front-End Software Engineer

Collective; Barcelona; Híbrido; EUR 60.000 - 80.000; A tiempo parcial

Descripción de la vacante

A major international insurance organization is seeking a Senior Front-End Developer to join their team in Barcelona. This hybrid role requires a minimum of 7 years in front-end or full-stack development, with proven expertise in React and experience in LLMs RAG products. Candidates should also have strong cloud knowledge, with the opportunity to integrate AI-driven solutions in a dynamic environment. The position offers the potential for long-term engagement through the end of 2026.

Formación

• Minimum 7 years of professional experience in front-end or full-stack development.
• Proven expertise developing production applications with React.
• Experience working with LLMs RAG pipelines or advanced AI/ML-driven products.
• Strong understanding of cloud environments (AWS and/or Azure).
• Hands-on experience with Docker and modern API architectures.
• Python or Java experience is a strong plus especially for AI integration work.
• Previous work in Agile delivery environments.

Responsabilidades

• Build intuitive responsive and high-quality frontend interfaces using React and modern JavaScript.
• Work closely with AI engineers backend developers and product stakeholders to design and implement AI-powered applications.
• Integrate LLMs RAG components and agentic workflows into production-grade solutions.
• Contribute to architectural decisions ensuring scalability reliability and maintainability.
• Participate in Agile/Scrum ceremonies and present deliverables during demos.
• Support document understanding initiatives and contribute to continuous technical improvement.

Conocimientos

Bootstrap

CSS

Front‑End Development

HTML5

React

Redux

Node.js

Angular

Less

JavaScript

backbone.js

Sass

Educación

University degree in Computer Science, Software Engineering or a related field

Herramientas

Docker

AWS

Azure

Descripción del empleo

Project context

Client: AXA GO Barcelona

Location: Spain

Work mode: Hybrid within Spain with mandatory monthly 1-2 day workshops in Barcelona or Madrid

Start date: ASAP

Duration: Until end of 2026 (possibility of extension)

Languages: English mandatory; Spanish and French are a plus

Summary

AXA GO Barcelona is developing a long-term strategic program focused on scaling AI capabilities and delivering advanced Retrieval-Augmented Generation (RAG) and Document Understanding solutions. You will join a senior engineering environment building user-facing applications that leverage cutting-edge LLMs agentic architectures and cloud platforms. This position is central to creating new AI-driven internal products used across the organization.

Goals and deliverables

Main Responsibilities & Key Activities

• Build intuitive responsive and high-quality frontend interfaces using React and modern JavaScript.
• Work closely with AI engineers backend developers and product stakeholders to design and implement AI-powered applications.
• Integrate LLMs RAG components and agentic workflows into production-grade solutions.
• Contribute to architectural decisions ensuring scalability reliability and maintainability.
• Participate in Agile/Scrum ceremonies and present deliverables during demos.
• Support document understanding initiatives and contribute to continuous technical improvement.

Experience Required

• Minimum 7 years of professional experience in front-end or full-stack development.
• Proven expertise developing production applications with React.
• Experience working with LLMs RAG pipelines or advanced AI/ML-driven products.
• Strong understanding of cloud environments (AWS and/or Azure).
• Hands‑on experience with Docker and modern API architectures.
• Python or Java experience is a strong plus especially for AI integration work.
• Previous work in Agile delivery environments.

Education

University degree in Computer Science, Software Engineering or a related field.

Key Skills

• Bootstrap
• CSS
• Front‑End Development
• HTML5
• React
• Redux
• Node.js
• Angular
• Less
• JavaScript
• backbone.js
• Sass

Employment Type: Freelance

Vacancy: 1