Backend Jobs in Spain

Java Backend Developer — Modernización de Legacy en Madrid

COBOL Eclipse Java Oracle SQL

AXPE Consulting busca un/a Desarrollador/a Java Backend para modernizar aplicaciones legacy en un entorno de administración pública. El puesto se centra en el desarrollo y evolución de aplicaciones de gestión y…

Sabina Divosi - Headhunter & Talent Partner

Backend Developer (Node.js / TypeScript) | Microservicios & Fintech

API AWS CI/CD NestJS Node.js +3 skills

Backend developer at fintech gibobs designing, maintaining and scaling critical APIs and partner integrations in a Node.js/TypeScript/NestJS microservices ecosystem, using PostgreSQL, RabbitMQ, AWS and a mature CI/CD pipeline (with Claude as an AI dev tool). Hybrid role based in Madrid, 2-3 days in office.

Jobrapido

Senior Java BackEnd Developer – Spring Boot / Kubernetes / Kafka – Barcelona (Híbrido) - The White Team consulting

Agile API Cloud Dynatrace ELK +10 skills

Senior Java backend developer at The Whiteam Consulting building and supporting backend components for high-impact international products using Spring Boot, Kafka, Kubernetes and AWS. Hybrid role in Barcelona (40% onsite) with close collaboration with distributed international teams and occasional travel to Munich.

BCNC Group

Senior Java Backend Developer - Ci/Cd & Observability

API AWS CI/CD Cloud Datadog +21 skills

Senior Java backend developer helping build a brand-new global platform that optimises logistics and distribution processes: designing Java 21/Spring Boot microservices with Kafka, PostgreSQL/MongoDB and API-first interfaces (OpenAPI, gRPC), with a strong focus on CI/CD (Jenkins) and production observability (Grafana, Prometheus, ELK, etc.).

TECDATA ENGINEERING

Senior.NET Backend Developer - Remote (Madrid)

TECDATA ENGINEERING seeks a Senior .NET Backend Developer (Analista Programador) to analyze, develop and maintain backend applications and design REST services using C#, ASP.NET and .NET Core. The role is 100% remote but requires residency in Madrid; microservices and agile knowledge are a plus.

Backend Developer - barcelona

HybridEurope

Accessibility API Aurora AWS CDK +16 skills

Mid/senior backend developer at Accessiway, a web-accessibility SaaS scale-up: design and run TypeScript/Node.js services on AWS (Lambda, ECS, API Gateway, SNS/SQS) with Aurora PostgreSQL and DynamoDB, plus growing involvement in AWS CDK infrastructure-as-code. Hybrid remote with a Turin office; open to candidates legally authorized in Italy, France, Germany, Austria, Spain or Portugal.

Lognext

Backend Developer:.NET & Dynamics Integrations

API Azure C# .NET Microsoft Dynamics

Backend developer in Madrid building Microsoft Dynamics/NAV integrations for a team focused on e-invoicing and digital document exchange. Day-to-day work centers on .NET Core/C#, Dynamics 365, APIs, and Azure, collaborating with top-tier teams and clients.

Mercadona

Backend Developer Java Spring Boot

API Docker Git Hibernate Java +13 skills

Backend developer at Mercadona's 1,400+ person IT team (based in Albalat dels Sorells, Valencia) designing and building RESTful web services and microservices with Java and Spring Boot, integrating with relational databases via Hibernate/JPA, writing tests with JUnit/Mockito, and collaborating with the frontend team.

Desarrollador/a Backend Java. Madrid

Java backend developer at eXperience IT Solutions in Madrid (hybrid): day to day you build backend services and REST APIs in a microservices architecture, working within CI/CD pipelines and modern engineering practices on a permanent contract.

Desarrollador/a Backend Java Microservicios

Ansible API CI/CD Cloud Docker +19 skills

Senior backend engineer at Scalian developing and maintaining Java Spring Boot microservices and REST APIs for a specialized banking team, including CI/CD pipelines, Docker/Kubernetes deployments, and collaboration with Data/AI teams. Fully remote role based in Spain.

Generalitat de Catalunya

Desarrollador Backend Python - IA y Cloud-native

API Cloud Cloud Native Docker Helm +6 skills

Backend Python developer at the Catalan regional government (Generalitat de Catalunya) in Barcelona, building and deploying scalable cloud-native services with Docker, OpenShift, Helm and Jenkins. The role involves REST API development, PostgreSQL/MongoDB data work, API security, and participation in AI/LLM projects; it requires a disability certificate and offers a stable position.

Inetum

Desarrollador/a Backend Java Senior - Inetum

API CI/CD Docker GitHub GitHub Actions +10 skills

Senior Java backend developer at Inetum in Bilbao, working on projects for private-sector clients: gathering requirements, designing REST APIs, building data integrations, testing, and monitoring systems. Core stack is Java 19/21, Spring Boot, Hibernate/JPQL, Kafka/RabbitMQ, Docker and GitHub Actions, with hybrid remote work.

The White Team consulting

Senior Java BackEnd Developer – Spring Boot / Kubernetes / Kafka – Barcelona (Híbrido)

Agile API AWS CI/CD Cloud +21 skills

Senior Java backend developer building and supporting backend components for international, high-impact products using Java 17+, Spring Boot, Kafka, Kubernetes and AWS. Hybrid role in Barcelona (40% onsite / 60% remote) collaborating with distributed international teams, especially in Munich.

SoftwareONE

Desarrollador De Software Backend .Net Y Sql Server

AI API Cloud Cloud Native DevOps +3 skills

Senior Backend Developer (.NET) at SoftwareONE, designing scalable backend services and REST APIs, modernizing legacy systems, and building new cloud-native solutions for digital transformation projects. Core stack: .NET Core/.NET Framework, SQL and NoSQL databases, Git, automated testing; DDD and CI/CD experience valued. Hybrid work in Spain.

DKB Code Factory

Backend QA Engineer

EuropeFull-time

Agile API Automation CI/CD GitLab +8 skills

As Backend QA Engineer at DKB Code Factory (Deutsche Kreditbank's tech hub in Valencia), you own and improve testing for backend services and APIs — designing automated integration, contract, component, and end-to-end tests (Java/Kotlin), ensuring test environments and data readiness, and embedding quality into CI/CD while sharing metrics with stakeholders.

SKIDATA

Backend Developer (C .NET)

HybridEurope

AI Angular API CI/CD C# +10 skills

Backend developer at SKIDATA building C#/.NET software integrations that connect third-party systems with SKIDATA's access solutions — owning projects from design through testing and documentation, working with REST, SOAP, gRPC, RabbitMQ and sockets, and supporting integration partners. Based in Alcobendas (Madrid) with a flexible hybrid model.

Global M

Senior Backend Developer

HybridEuropeSenior

AI API AWS Cloud Containerization +7 skills

Senior backend engineer at Global M in Barcelona (hybrid, 3 days/week onsite) designing scalable Python services, SQL/NoSQL data storage and retrieval systems, and batch/streaming pipelines on AWS and Kubernetes, while experimenting with modern AI engineering tooling such as coding agents and MCP.

SKIDATA

Backend Developer - C#/.NET Integrations

API CI/CD C# .NET gRPC +1 skills

A backend developer at SKIDATA designs, builds, tests, and documents integrations connecting third-party systems to SKIDATA products using C#/.NET, working with REST, SOAP, gRPC, and socket interfaces, supporting partner integrations, and contributing to coding standards and CI/CD practices in a global team.

Sabina Divosi - Headhunter & Talent Partner

SENIOR BACKEND DEVELOPER - FINTECH

API AWS Fintech NestJS Node.js +6 skills

Senior backend developer for an innovative fintech (posted via headhunter Sabina Divosi) based in Madrid on a hybrid 3-2 office schedule. Day to day: designing and evolving critical APIs for a multitenant SaaS, architecture decisions, partner integrations and performance work with Node.js, TypeScript, NestJS, PostgreSQL, TypeORM, RabbitMQ and AWS.

Health in Code®

Desarrollador Java Backend | Spring Boot & RESTful APIs

API Docker Git GraphQL Hibernate +6 skills

Java backend developer at Health in Code building REST services, Spring Boot microservices, and GraphQL APIs on relational and NoSQL databases. Based in Valencia or Madrid with hybrid remote flexibility, using Hibernate, JPA, Docker, Kubernetes, Git, and JUnit.