Pasiona is a Spanish technology consultancy specializing in digital transformation, software development, and Microsoft technologies. Founded in 2007, the company provides strategic IT services, including cloud computing, cybersecurity, and artificial intelligence solutions to a wide range of national and international clients.

With a strong presence across Spain, Pasiona maintains offices in major hubs like Barcelona, Madrid, and Bilbao. The company is known for its people-first culture and commitment to professional development, making it an excellent choice for international tech talent looking to integrate into the Spanish tech ecosystem through diverse projects and modern tech stacks.

Founded in 2007 in Barcelona, Pasiona has grown from a small development boutique into a leading Spanish IT consultancy. It has expanded its service offerings to include advanced AI, cybersecurity, and cloud infrastructure.

For international professionals

Specializes in Microsoft technologies and is a Microsoft Gold Partner.
Offers flexible work arrangements, including hybrid and remote-friendly options for many roles.
Provides a structured career path with internal training programs and certifications.
Maintains a diverse project portfolio across sectors like finance, healthcare, and retail.

Full Stack Web Developer (Backend Focus) – Multi-cloud GenAI Platform / Secure GPT

Pasiona

This job was originally posted in Spanish and automatically translated to English. You'll most likely need Spanish to apply.

Job Description

We are looking for a Full Stack Web Developer with a strong backend orientation to join the AI products team developing a Multi-cloud GenAI platform (Azure, AWS, Google Cloud), with a primary focus on the Secure GPT service.

This is a key technical role in an international environment, where you will contribute to the design, development, and evolution of advanced generative AI capabilities, ensuring security, scalability, and regulatory compliance.

Responsibilities:

Design, develop, and improve functionalities for the Secure GPT service (RAG, agents, document understanding, translation, APIs, automation).
Participate in the entire development cycle: analysis, technical design, implementation, testing, documentation, and monitoring.
Build and maintain robust and scalable APIs.
Define and monitor usage and product performance KPIs.
Develop automations and efficiency improvements within the platform.
Collaborate with the Tech Lead and Product Owner in an international team.
Ensure compliance with security, compliance, and corporate architecture standards.

+5 years in backend web development (ideally in Azure or cloud environments).
Node.js (backend) and React / Next.js (light frontend).
Design and implementation of REST/GraphQL APIs.
Full testing experience:
- Unit testing.
- End-to-end (E2E).
Azure:
- App Services.
- Cosmos DB.
- Application Insights.
- Observability and monitoring.
CI/CD with Azure DevOps.
Knowledge of Infrastructure as Code (IaC).
Experience with AI APIs: OpenAI, Azure AI, Anthropic, or Gemini.
Knowledge of:
- RAG (Retrieval-Augmented Generation).
- Agents / agentic frameworks.
Experience in prompt engineering (design, iteration, and optimization of prompts).
Autonomous mindset: end-to-end ownership of functionalities.
Proactive and solution-oriented approach.
Ability to work in changing environments.
Good level of English communication (minimum B1).
Teamwork in international contexts.

Languages: Spanish and English.

Location: Barcelona.
Occasional travel: France, Spain, or Portugal.

A day off for your birthday so you can celebrate however you want!

Improvements in paid leave for a better personal and professional balance.

Access to private medical insurance for your peace of mind.

Extra vacation days based on your seniority, because we value your rest and well-being.

At Pasiona we believe in diversity and equal opportunity.

We encourage all people to apply, regardless of their gender, age, disability, sexual orientation, gender identity, ethnic origin, religion, or other personal or social circumstances.

View original advert (Spanish)

Estamos buscando un/a Full Stack Web Developer con fuerte orientación backend para unirse al equipo de productos de IA que desarrolla una plataforma Multi-cloud de GenAI (Azure, AWS, Google Cloud), con foco principal en el servicio Secure GPT.

Se trata de un rol técnico clave en un entorno internacional, donde contribuirás al diseño, desarrollo y evolución de capacidades avanzadas de IA generativa, garantizando seguridad, escalabilidad y cumplimiento regulatorio.

Funciones:

Diseñar, desarrollar y mejorar funcionalidades del servicio Secure GPT (RAG, agentes, comprensión de documentos, traducción, APIs, automatización).
Participar en todo el ciclo de desarrollo: análisis, diseño técnico, implementación, testing, documentación y monitorización.
Construir y mantener APIs robustas y escalables.
Definir y monitorizar KPIs de uso y rendimiento del producto.
Desarrollar automatizaciones y mejoras de eficiencia en la plataforma.
Colaborar con Tech Lead y Product Owner en un equipo internacional.
Asegurar el cumplimiento de estándares de seguridad, compliance y arquitectura corporativa

+5 años en desarrollo web backend (idealmente en entornos Azure o cloud).
Node.js (backend) y React / Next.js (frontend ligero).
Diseño e implementación de APIs REST/GraphQL.
Experiencia completa en testing:
- Unit testing.
- End-to-end (E2E).
Azure:
- App Services.
- Cosmos DB.
- Application Insights.
- Observabilidad y monitoring.
CI/CD con Azure DevOps.
Conocimientos de Infrastructure as Code (IaC).
Experiencia con APIs de IA: OpenAI, Azure AI, Anthropic o Gemini.
Conocimiento de:
- RAG (Retrieval-Augmented Generation).
- Agentes / agentic frameworks.
Experiencia en prompt engineering (diseño, iteración y optimización de prompts).
Mentalidad autónoma: ownership end-to-end de funcionalidades.
Enfoque proactivo y orientado a soluciones.
Capacidad de trabajar en entornos cambiantes.
Buen nivel de comunicación en inglés (mínimo B1).
Trabajo en equipo en contextos internacionales.

Idiomas: Español e Inglés.

Ubicación: Barcelona.
Viajes ocasionales: Francia, España o Portugal.

¡Un día libre por tu cumpleaños para que lo celebres como quieras!

Mejoras en permisos retribuidos para un mejor equilibrio personal y profesional.

Acceso a seguro médico privado para tu tranquilidad.

Días de vacaciones extra según tu antigüedad, porque valoramos tu descanso y bienestar.

En Pasiona apostamos por la diversidad y la igualdad de oportunidades.

Animamos a postularse a todas las personas, con independencia de su género, edad, discapacidad, orientación sexual, identidad de género, origen étnico, religión u otras circunstancias personales o sociales.