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
10h
Technical Product Manager (Banking Connectivity)
Embat —Madrid, Madrid provincia
- Jornada completa
- Trabajo híbrido
- Inglés
- APIs
Senior Full Stack Developer
EPTA GROUP —Madrid, Madrid provincia
- Jornada completa
- Azure
- Informática
- Inglés
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Amazon Data Services Spain, S.L. —Zaragoza, Zaragoza provincia
- Jornada completa
- Máster
- SQL
- AWS
Cloud and Devops Developer (m/f)
Airbus Defence and Space SAU —Getafe, Madrid provincia
- Jornada completa
- Trabajo híbrido
- Azure
- Informática
- Servicio al cliente
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COGNODATA —Madrid, Madrid provincia
- Jornada completa
- Trabajo híbrido
- Bases de datos
- Grado
- APIs
- Flexibilidad horaria
Solicitud rápida
13h
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ANYbotics —Barcelona, Barcelona provincia
- Informática
- Inglés
- JavaScript
Market Data Specialist – Financial Markets
ING Hubs —Madrid, Madrid provincia
- Inglés
- Oficina
- Máster
- Seguro de vida
- Plan de pensiones
Research Engineer - Tools developer for LSQUANT platform (Theoretical and Computational Nanoscience)
ICN2 —Barcelona, Barcelona provincia
- Jornada completa
- Azure
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- Grado
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Bsport —Barcelona, Barcelona provincia
- Horas extra
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Data Platform Engineer (f/m/d)
Axpo —Madrid, Madrid provincia
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- Azure
- DevOps
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NineTwoThree AI Studio —Valencia, Valencia provincia
- Horas extra
- Teletrabajo
- Marketing
- Máster
- Grado
Solicitud rápida
DevOps Engineer
Shakers —Valencia, Valencia provincia
- Trabajo híbrido
- Español
- Informática
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12d
Senior Embedded Software Engineer
TKH Security —Málaga, Málaga provincia
- Jornada completa
- Español
- Informática
- Inglés
- Parking gratuito
Solicitud rápida
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
- Ventas
- Inglés
- Oficina
Senior Go Engineer
Ciklum —En remoto
- Jornada completa
- Teletrabajo
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- AWS
- POS
Mid-market Business Development intern
Shakers —Madrid, Madrid provincia
- Ventas
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Lansweeper —Alicante, Alicante provincia
- Horas extra
- Trabajo híbrido
- DevOps
- Inglés
- Grado
Solicitud rápida
Senior Software Engineer - Print Pipeline
Quantica GmbH —Sant Cugat del Vallès, Barcelona provincia
- Jornada completa
- Inglés
- Oficina
- C++
Solicitud rápida

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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 10 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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