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Kairós Digital Solutions SL

Backend Java Developer (con inglés)

Backend Java developer at Kairós, a Spanish digital-transformation consultancy, joining teams to build and evolve microservices and REST API solutions through the full product lifecycle. Core stack is Java 8+, Spring Boot, Kafka and Git, working 100% remotely with professional-level English.

API Docker Git Java Kafka +3 skills

Java backend developer

New EuropeContract

Java Backend Developer at consulting firm K-LAGAN in Barcelona, building and integrating backend services, REST APIs, and WMS/WCS solutions for international warehouse automation projects. Core stack: Java 17, Spring Boot, Oracle/SQL, JUnit/Mockito, Git/Gradle, with on-site commissioning and travel.

Agile Angular API Automation Azure +22 skills

970 KING SHARED SERVICES S.L.

Senior Backend Java Developer - Foundations

New EuropeSenior

Senior backend Java developer at King (Barcelona) building and operating shared backend platforms that internal game teams rely on — designing reliable APIs, improving scalability and resilience under high load, and owning services from design through production support. Core stack: Java with concurrency and distributed systems; GCP a plus.

API Cloud DevOps Distributed Systems GCP +1 skills

Desarrollador/a Backend (Golang / Microservicios / APIs)

New HybridEurope

Serviguide-BPO is hiring a backend developer with 3+ years of experience to work on a Go-based project building microservices, REST services and API integrations, using relational and document databases, messaging solutions, unit testing and version control. Hybrid Madrid role: mostly remote, with about one on-site day per week (offices in Las Rozas).

API Go Microservices REST Unit Testing +1 skills

Desarrollador Java Backend para Salud | Teletrabajo 100%

Java backend analyst-programmer on a long-term project building applications for a national healthcare ICT infrastructure: requirements analysis, technical design, development and testing. Stack includes Java EE, Vert.x and Spring Boot on Tomcat/WebLogic with Oracle/PostgreSQL, with 100% remote work and continuous training.

J2EE Java Oracle PostgreSQL Spring +2 skills

Krell Consulting & Training, S.L.

Desarrollador/a Backend Java Senior | Kafka, Spring Boot y Microservicios | Remoto

New EuropeSenior

Senior Java backend engineer designing, building and maintaining microservices with Java 17+, Spring Boot and Apache Kafka, applying event-driven and hexagonal architecture, cloud (AWS), testing and CI. 100% remote role (from approved Spanish regions) with English C1 required; salary to be discussed.

AWS Cloud CQRS Docker Domain-Driven Design (DDD) +6 skills

Artificial Seed

python developer for a knowledge graph algorithm

Develops and maintains a high-load Python knowledge-graph service that analyzes code repositories using tree-sitter and pyright, extending it to support more programming languages. Day-to-day work involves building a FastAPI web service, writing tests, and working with asyncio, PostgreSQL/ClickHouse, message brokers, and Kubernetes, with relocation to Bilbao supported.

Asyncio ClickHouse Docker FastAPI GitLab +10 skills

Contemporary Star Energy

Java Developer

Java Developer at Contemporary Star Energy, the Stellantis–CATL battery joint venture, working on-site in Zaragoza to build and maintain Java/J2EE applications, RESTful APIs, and microservices supporting the company's battery gigafactory operations. Requires 3+ years of Java experience and C1-level English.

Agile API CI/CD Design Patterns Docker +11 skills

Full-stack Developer (Frontend Focused)

New HybridEurope

adesso Spain is hiring a full-stack engineer with a strong Angular/TypeScript frontend focus plus Java/Spring backend skills to build scalable client projects across Europe. Work is hybrid — remote, the client's Barcelona office, and occasional trips to Germany every 2-3 months — within an AI-driven engineering team.

Agile AI Angular API CI/CD +7 skills

Desarrollador FullStack – Backend – Microservicios

Backend-focused full stack developer building and maintaining Java microservices with Spring Boot and Spring Batch on Oracle/relational databases, deployed and managed on Kubernetes. Involves unit testing, DevOps pipelines, incident resolution, and code reviews in an Agile team based in Madrid.

Agile API DevOps Git GitLab +13 skills

Desarrollador Backend .NET — Real-Time y Escalable (Híbrido)

Backend .NET developer at Indra Group building a real-time, scalable defense and cybersecurity platform. Hybrid role based in Madrid, working closely with Frontend, DevOps and Product teams; key technologies include .NET Core, SignalR, WebRTC and Docker.

DevOps Docker .NET WebRTC

Desarrollador/a Backend .NET

Backend .NET developer in Indra Group's Defense & Security unit in Madrid (hybrid), building a new-generation platform for cyber defense and cyber training. Day to day: designing scalable real-time backend architectures and secure REST APIs with .NET Core, SignalR, WebSockets, WebRTC, Redis and Docker.

API DevOps Docker .NET Redis +2 skills

Frontend Developer Specialist

New HybridEurope

Frontend developer joining the Channels team to build and evolve the company's customer-facing web channel in A Coruña (hybrid 50/50). Day-to-day: building accessible, responsive UI with modern JavaScript frameworks, HTML/CSS/Tailwind, SPA/SSR/SSG rendering, REST API integrations, testing with Testing Library, CI/CD, Core Web Vitals, and AI-assisted coding tools.

API CI/CD CSS Generative AI HTML +5 skills

Frontend Developer Specialist

New HybridEurope

Frontend developer joining Serviguide's channels team to build and evolve the company's customer-facing web channel in a hybrid role based in A Coruña. Works with modern JavaScript frameworks, semantic HTML/CSS with Tailwind, SPA/SSR/SSG rendering, REST integrations, Testing Library, Vite, CI/CD and AI-assisted development tools.

API CI/CD CSS Generative AI HTML +5 skills

Projecting by Izertis

Senior Data Engineer- Financial Services

New EuropeSenior

Senior Data Engineer building and optimizing data pipelines that feed financial products (positions, derivatives, FX, loans) for a banking client. Daily work involves Python, SQL, PySpark, high-volume/low-latency ETL, FAIR data modeling and cloud environments, in a hybrid model preferably from Málaga.

Cloud Databricks ETL PySpark Python +2 skills

Merkle CXM Spain S.L.U.

Frontend Developer - Hybrid, Cx Growth & Ux Training

New EuropeFull-time

HTA Programmer/Analyst supporting German AMNOG dossiers and market access: programming statistical analyses of clinical trial data (efficacy, safety, subgroups, meta-analyses) in SAS with R an advantage, and automating analysis workflows with Market Access/HEOR teams. Fluent German and English required; Spain-based remote/hybrid.

Automation Data Science SAS Spark Statistics

Blu Selection - Recruitment Agency

Freelance Senior Or Junior Full Stack Developer - React / Next.Js / Node.Js - Barcelona

New EuropeContractSenior

Freelance full-stack developer (junior or senior) building data-heavy user interfaces with React/Next.js and Node.js backends (REST, WebSockets) for a pharmaceutical company in Barcelona. 3-month renewable contract, hybrid from Barcelona, working with Product, UX and Data in an agile team.

Agile API AWS CI/CD Clean Architecture +13 skills

Devops Engineer - Azure - Freelance

New EuropeContract

Senior DevOps engineer working on Azure cloud infrastructure for strategic Data & AI digital-transformation projects: designing and managing Azure environments, building infrastructure as code with Bicep/ARM, automating with PowerShell and Python, and maintaining CI/CD pipelines. Hybrid model with on-site days in Barcelona (freelance).

AI ARM Templates AWS Azure Bicep +9 skills

Pasiona Consulting

Data Integration Platform Engineer Expert

Pasiona Consulting is hiring a Data Integration Platform Engineer Expert to keep integration platforms stable in an international environment — designing automation to cut manual work and manage capacity, performance and availability, centered on MuleSoft. Hybrid role in Madrid with occasional travel and off-hours availability.

Argo CD Mulesoft OpenShift Terraform

Allianz Technology SE Spain Branch

Data Warehouse Engineer - Azure And Databricks (M/F/D)

New HybridEuropeContract

Data Warehouse Engineer - Azure and Databricks (m/f/d) About the Job Are you a skilled Data Engineer / Software Developer with a passion for working with cutting-edge technologies – both on-premise and in the cloud?…

Agile AI Analytics Azure Backbone.js +16 skills