20 publicaciones de empleo destacadas en back end developer (¡Están contratando!)

Senior Full Stack Developer – GenAI Platform (Back-end focus) - Freelance
Collective.work —Barcelona, Barcelona provincia
- Jornada completa
- Trabajo híbrido
- Español
- Azure
- Servicio al cliente
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- Teletrabajo
- Azure
- Informática
- Mantenimiento
- Flexibilidad horaria
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Process Street —Madrid, Madrid provincia
- Jornada completa
- Teletrabajo
- Investigación
- Java
- AWS
- Seguro oftalmológico
Solicitud rápida
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- Jornada completa
- Java
- C++
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Fullstack Java Developer - certificado de discapacidad del 33%
IThinkUPC —Barcelona, Barcelona provincia
- Incorporación inmediata
- Trabajo híbrido
- Mantenimiento
- Inglés
- Java
- Formación continua
- Seguro médico privado
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Axpo Group —Madrid, Madrid provincia
- Media jornada
- Trabajo híbrido
- Español
- Azure
- DevOps
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Amazon Data Services Spain, S.L. —Zaragoza, Zaragoza provincia
- Jornada completa
- Máster
- SQL
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- Jornada completa
- Trabajo híbrido
- Bases de datos
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- APIs
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- Inglés
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Data Platform Engineer (f/m/d)
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- Media jornada
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- Azure
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TKH Security —Málaga, Málaga provincia
- Jornada completa
- Español
- Informática
- Inglés
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Senior Web Product Designer
Trinetix —Madrid, Madrid provincia
- Jornada completa
- Trabajo híbrido
- Español
- Sistemas ERP
- Inglés
Solicitud rápida
4d
Business Development Manager
Gartner —Barcelona, Barcelona provincia
- Jornada completa
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Shakers —Madrid, Madrid provincia
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Quantica GmbH —Sant Cugat del Vallès, Barcelona provincia
- Jornada completa
- Inglés
- Oficina
- C++
Solicitud rápida
Senior Engineer
Lansweeper —Alicante, Alicante provincia
- Horas extra
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- DevOps
- Inglés
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Senior Software Engineer (Backend Platform)
FeverUp —Barcelona, Barcelona provincia
- Jornada completa
- Inglés
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- AWS
Regional Account Manager (Symantec, Carbon Black, CA)
Arrow Electronics, Inc. —Alcobendas, Madrid provincia
- Jornada completa
- Español
- Ventas
- Inglés
Automation and AI Engineer (Unity & Backend Technologies)
Product Madness —Barcelona, Barcelona provincia
- Jornada completa
- Microsoft Word
- Azure
- DevOps

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Senior Full Stack Developer – GenAI Platform (Back-end focus) - Freelance

Collective.work
Barcelona, Barcelona provincia

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Detalles del empleo

Jornada completa | Autónomo
Hace 8 horas

Cualificaciones

Francés
CI/CD
Español
Azure
Node.js
React
Servicio al cliente
DevOps
Inglés
AWS
JavaScript
Terraform
Desarrollo de Back-End
Scripting
APIs
Cloud
Inteligencia artificial

Descripción completa del empleo

Job description

Daily rate: 300€/day

Project context

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.

Goals and deliverables

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

Requirements

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

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