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

Barcelona💼 Full-time🗓 2026-06-12 → 2026-09-23

Core

Design, develop, and evolve backend capabilities for a multi-cloud GenAI platform (Secure GPT) focusing on RAG, agents, document understanding, translation, and automation.

Role type

Senior Full Stack Web Developer (Backend Focus)

Builds

Scalable APIs, GenAI service features, and automation tools for Secure GPT

Domain

Generative AI, Multi-cloud infrastructure (Azure, AWS, Google Cloud)

Deliverable

production ML models | product features | infrastructure

Required skills

Node.js, React/Next.js, REST/GraphQL API design, Unit & E2E testing, Azure App Services, Cosmos DB, Application Insights, CI/CD (Azure DevOps), Infrastructure as Code, OpenAI/Azure AI/Anthropic/Gemini APIs, RAG implementation, Agentic frameworks, Prompt engineering

Preferred skills

Experience in Azure or cloud environments, Autonomous ownership mindset, Proactive problem-solving

Technologies

Node.js, React, Next.js, Azure App Services, Cosmos DB, Application Insights, Azure DevOps, OpenAI, Azure AI, Anthropic, Gemini

Responsibilities

Design and implement backend functionalities for Secure GPT, Build and maintain robust and scalable APIs, Define and monitor product usage and performance KPIs, Develop automation and efficiency improvements, Collaborate with Tech Lead and Product Owner in an international team, Ensure compliance with security and corporate architecture standards

Seniority

Senior, hands-on IC

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