Daily rate: 300€/day
Project Details
Location: Barcelona
Work mode: Hybrid (1-2 days onsite)
Start date: ASAP
Duration: Until end of 2026
Language(s): English (Mandatory); Spanish or French (Plus)
Project Summary
We are looking for a Senior Full Stack Developer to join our AI products team and contribute to the development of a Multi-cloud GenAI platform (Azure / AWS / Google), with a primary focus on the Secure GPT service. The role is approximately 90% back-end and 10% front-end. The objective is to evolve platform capabilities and ensure secure, scalable, high-quality implementations aligned with business, technical, security, and regulatory requirements.
Main Responsibilities & Key Activities
Design, develop, and enhance features for the Secure GPT service: document understanding, translation, agentic capabilities, web usage, APIs, and automation
Execute end-to-end development activities: study, analysis, technical design, implementation, documentation, testing, and monitoring
Define and track KPIs to monitor usage and support data-informed decisions
Collaborate within an international team and maintain regular communication with the Tech Lead and Product Owner
Implement solutions compliant with security, regulatory, and internal standards
Identify and contribute to improvements in processes, automation, and customer service delivery
Experience Required
Mandatory Experience
Minimum 5 years of experience in web application development, ideally within Azure environments
Back-end development with Node.js (JavaScript / TypeScript)
Front-end development with Next.js / React
Full ownership of the testing lifecycle: unit tests and end-to-end (E2E) tests
API design, implementation, and operation
Azure services: App Services, Cosmos DB, Application Insights, monitoring
DevOps practices: Azure DevOps, CI/CD pipelines
Fundamentals of Infrastructure as Code (IaC) and automation scripting
Prompt engineering: drafting, testing, and iteratively improving prompts
Experience with AI APIs and/or frameworks: OpenAI, Anthropic, Gemini, Azure AI; RAG and agentic/agent-based capabilities
Preferred Experience
Terraform and/or Bicep for infrastructure deployment
Observability and monitoring tooling
Background in regulated industries
Azure and API certifications
Knowledge of data security and compliance
Availability for occasional travel to France, Spain, or Portugal
