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

Pasiona·Barcelona, Spain

What they offer

  • Permanent contract

    Full-time hours.

What they ask for

  • Have the right to work in Spain

    Pasiona doesn't mention sponsorship in the ad.

  • Speak native-level Spanish

    Listed as a requirement in the ad.

  • Work in English

    English is required, per the ad.

  • Work on-site in Barcelona

    No relocation package mentioned.

  • Have 5+ years of experience

    Senior-level role.

Pulled from the advert automatically — the full ad is what counts.

Added 2 months ago
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About the role

We are looking for a Full Stack Web Developer with a strong backend focus to join the product team developing a Multi-cloud GenAI platform (Azure, AWS, Google Cloud), with the main 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.

What you'll do

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

Languages

  • Languages: Spanish and English.

What you'll get

¡One day off for your birthday so you can celebrate it however you want!

Improved paid leave for a better personal and professional balance.

Access to private health insurance for your peace of mind.

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

How you'll work

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

Minimum requirements

  • 5+ years of experience 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) testing.
  • 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 features.
  • Proactive, solution-oriented approach.
  • Ability to work in fast-changing environments.
  • Good communication skills in English (minimum B1).
  • Teamwork in international contexts.

Additional information

At Pasiona we are committed to diversity and equal opportunities.

We encourage everyone to apply, regardless of gender, age, disability, sexual orientation, gender identity, ethnic origin, religion, or any other personal or social circumstance.

This job was automatically translated to English, .

About the company

Pasiona

Pasiona

Tech Consulting

View company profile
Spanish company
300 employees