Tech jobs

Java Backend Developer

Agile API AWS Azure CI/CD +20 skills

Java Backend Developer at international consulting firm Qaracter, building and maintaining backend applications and microservices for banking and financial projects. Day-to-day work centers on Java 8/11, Spring Boot/Batch/Cloud Stream, Kafka event-driven architecture, Oracle/PostgreSQL/Redis, and CI/CD with Jenkins and OpenShift.

act digital

Senior Fullstack Java Developer — Remote

Act Digital is hiring a Senior Fullstack Java Developer for a 100% remote position, working on both frontend and backend of high-impact enterprise applications. Core technologies include Java, Spring Boot microservices, JSF, Jakarta EE, and REST API design.

API Java Spring

NTT DATA Europe & Latam

Senior Java Developer Remote Hybrid

Agentic AI Agile Ansible API DevOps +13 skills

Senior backend engineer at NTT DATA working on large tech-modernization programs that integrate generative-AI and agentic capabilities into complex client environments. Day to day you build Java/Spring Boot (or Node.js) microservices with strong testing practices, deploy on Docker/Kubernetes/OpenShift, and use DevOps tooling like Ansible and Terraform; telework options are available.

Intellias

NewBe an early applicant EuropeContractSenior

Senior Java Developer (IGaming)

Agile API Api Design Containerization Design Patterns +8 skills

Senior Java Developer building and optimizing high-performance backend services for a sports betting and gaming platform: integrating a new feed supplier and developing a cashier module for cash-flow management. Core stack is Java, Spring, and REST APIs, with Docker, Maven/Gradle, and Git in an Agile SAFe environment, remote from Spain.

NTT DATA Europe & Latam

Senior Java Developer - Finance

Agentic AI Agile Ansible API DevOps +13 skills

NTT DATA is hiring a Senior Java Developer for finance-sector projects in Foz, Spain, working on integrating generative AI and agentic platforms into complex backend systems. Day-to-day work centers on Java/Spring Boot microservices, strong testing practices, and DevOps tooling like Docker, Kubernetes, Ansible, and Terraform.

Tecnología y Personas

Senior Backend Developer (.NET)

API C# .NET Git MVC +4 skills

Senior backend developer building and evolving a REST API architecture in a demanding financial environment. Day to day: developing and maintaining APIs in C#/.NET Core 8, technical design, code reviews, mentoring juniors, and integrating with internal and external systems using Entity Framework and SQL Server.

Acercanza Consulting

Programista Back-End - Backend Developer

Agile API AWS CI/CD DevOps +14 skills

Senior Backend Developer – Barcelona ¿Tiene lo que se necesita para triunfar? La siguiente información debe ser leída atentamente por todos los candidatos. Proceso gestionado por Acercanza Consulting ¿Eres un/a Senior…

Anonymous

Backend developer - java (hybrid madrid)

API Azure BDD CI/CD Cloud +15 skills

UST is hiring a Java Backend Developer for a wealth management project with a global client (Julius Baer) in Madrid. Day to day involves building backend services with Java and Spring Boot, containerized deployments on Kubernetes/Docker/Helm, Kafka streaming, and CI/CD tooling, working hybrid (3 days in office, 2 WFH).

NTT DATA Europe & Latam

Senior Java Developer - Flexible Remote Working

Agentic AI Agile Ansible API DevOps +13 skills

Senior backend developer at NTT DATA working on large technology modernization programs that integrate generative AI and agentic platforms into complex environments. Day to day centers on Java (and/or Node.js) Spring Boot microservices with hexagonal architecture, strong testing practices, and DevOps tooling like Docker, Kubernetes, Ansible and Terraform.

ALTEN Delivery Centre Spain

Java Developer - Remote

API Cloud Git GitLab Java +1 skills

Remote (from Spain) Java backend developer evolving and maintaining IT Services Marketplace and Microsoft 365 platforms for a telecom client at UST. Day to day: designing features, building REST APIs and microservices, integrating with internal and Microsoft systems, testing, and managing GitLab repos.

DIGITAL55

JAVA DEVELOPER - INGLES - REMOTO

API CI/CD Confluence DevOps Git +9 skills

A 100% remote Java Full Stack developer role at DIGITAL55 for a financial/trading-controls project: designing, developing and optimizing Java/Spring Boot applications, reducing technical debt, and using AI tools (GitHub Copilot, Devin), CI/CD and security/quality tooling like SonarQube and Fortify.

PrimeIT España

Full Stack Java Developer (remoto)

Angular API CI/CD Cloud Docker +4 skills

Full Stack Java + Angular developer at a large IT consulting firm, joining a stable project: building apps with Java, Spring Boot and Angular, developing/consuming REST APIs and working with SQL databases. Docker/Kubernetes, CI/CD and cloud experience are a plus.

EY

Backend Java Developer - Senior

Agile API Authentication AWS Azure +29 skills

Senior backend Java developer at EY GDS in Málaga (hybrid) building enterprise-grade banking applications for financial institutions across Europe. Day-to-day involves developing Java microservices with Spring Boot, Oracle DB/PL-SQL work, REST APIs, and CI/CD in agile teams.

Acercanza Consulting

Backend Developer/ Programista Backend

Agile API AWS CI/CD DevOps +14 skills

Senior backend developer at a Barcelona Health-Tech company building and scaling medication-management services with Node.js, NestJS and AWS, including a migration from a hybrid AWS architecture to serverless (Lambda, API Gateway, RDS) and working with MySQL and DynamoDB. Hybrid role: 4 days on-site, 1 remote, close collaboration with the CTO in a 6-person engineering team.

55K – 60K €

Baoss

Backend Developer

Agile API Git Java Jira +8 skills

Java backend developer for an insurance-sector project in Barcelona: designing, building and evolving Spring Boot microservices with REST APIs, Kafka-based event integrations and MongoDB, plus unit testing, technical documentation and Agile/Scrum collaboration.

Acercanza Consulting

Programista / Backend Developer

Agile API AWS CI/CD DevOps +14 skills

Senior Backend Developer at a health-tech company in Barcelona building and scaling backend services and APIs with Node.js, NestJS, and AWS (Lambda, API Gateway, RDS), migrating toward a serverless architecture, modeling data in MySQL and DynamoDB, and applying CI/CD, testing, and Agile practices while mentoring teammates.

55K – 60K €

Hadrian

NewBe an early applicant On-siteNorth AmericaInternshipIntern

Software Engineer Intern

United States

Hadrian, which builds autonomous factories for aerospace and defense manufacturing, is hiring a Software Engineer Intern in Los Angeles. The intern builds internal tools, backend services, APIs, and data pipelines for factory operations, working on real production systems with languages like Python, TypeScript, or Go.

AI API Automation Backbone.js Data Engineering +6 skills

46 – 51 $ / hr

Experis España

Python Developer / Terraform – Híbrido Madrid O Barcelona (H/M/X) - Bilbao

API CI/CD Cloud Flask Git +3 skills

Build a Python/Flask API to automate tasks on IBM Cloud virtual servers, managing infrastructure deployments with Terraform and integrating them into Jenkins CI/CD pipelines. A hybrid junior-to-mid role (1-2 years' experience) for Experis España in Spain.

Arelance

Software Developer - Engineering