26,989 Backend jobs
Server-side engineering roles — APIs, services, databases and backend systems.
Backend Developer: Node.js/Java on AWS, 2027 Migration
On-site backend developer role in Spain at Capitole: developing, maintaining, and supporting Node.js services deployed on AWS, with automated testing, code review, and CI/CD in an agile team. Java experience is prioritized because the team plans a migration to Java in 2027.
Backend Developer / Tech Lead | Node.js, NestJS y Microservicios
A hybrid backend developer / technical business analyst role in Barcelona: gather business and product requirements, propose technical solutions, prepare the technical backlog (epics, stories, API docs) and unblock the team through delivery. Stack: Node.js, TypeScript, NestJS, microservices, REST/GraphQL, SQL/NoSQL and Salesforce integrations.
Senior Java Backend Developer
Senior Java Backend Developer building secure, scalable cloud-native microservices for G+D's Trusted Service Manager (TSM) platform on the ECB Digital Euro project. Day to day: Spring Boot 4/Spring Cloud services, cryptographic PKI workflows, MongoDB data layers, and test automation in Docker/Kubernetes CI/CD.
Backend Developer .Net (Azure)
Senior .NET backend developer (via Melza Consulting) for a retail-sector client's Digital Hub in central Barcelona: improving key microservice APIs, migrating them to Kubernetes, and operating/monitoring cloud infrastructure (ideally Azure) within a cross-functional agile team. Requires 5+ years .NET experience.
Backend Developer (Node/Java/AWS)
Backend developer at consulting firm Capitole who develops, maintains, and supports AWS-deployed services, primarily in Node.js with a planned 2027 migration to Java. Day-to-day work covers hexagonal architecture/DDD, automated testing, CI/CD, GitHub code reviews, Scrum, AI-assisted development, and on-call rotations.
Desarrollador Web .NET (C#) – APIs & Backend
Randstad Digital España in Madrid is hiring a .NET (C#) web developer with 2–3 years of experience to design, build, and maintain backend APIs and services focused on performance and security. Daily work includes Vue.js frontends, SQL/NoSQL data, unit testing, agile ceremonies, and code reviews.
Desarrollador Genesys Engage | Backend Node.js | Hybrid
Builds and maintains contact-center solutions using Genesys Engage and Genesys Universal Scripting (GUS), with Node.js backend development and REST API integrations with corporate services, for a long-term project in a high-level corporate environment. Hybrid role based in Madrid, mostly remote with flexible hours.
Analista Desarrollador Backend .NET
Backend .NET analyst-developer at Amper Group in Pozuelo de Alarcón (Madrid), joining a development team to design and deploy voice communications management solutions. Day-to-day work centers on C#/.NET Core backends with relational databases, plus Windows Forms/WPF, REST, Docker, and Agile; partial remote work offered.
Desarrollador Backend Senior (Hidrocarburos Remoto)
Fully remote senior backend developer for a client in the hydrocarbons/energy sector. Day to day: designing scalable, secure backend services and APIs, managing databases, writing tests, and optimizing performance using Python/Java/Node.js/Go, PostgreSQL/MySQL/MongoDB, microservices, AWS/Azure/GCP, and Docker/Kubernetes.
Desarrollador .NET Backend - Comunicaciones Aeronáuticas (Remote)
Analista Desarrollador at Amper Group's Pozuelo de Alarcón (Madrid) offices, building backend systems for aeronautical communications. Day-to-day work centers on C#/.NET Core backend development with DI and async programming, with valued extras in SPA frontend (Vue/Angular), Docker, and SQL databases.
Desarrollador/a Backend Java Spring Boot – Sector Bancario
Backend Java developer in Madrid (on-site) building and maintaining Java 11+/Spring Boot microservices for a banking-sector project on cards and payment methods, including tokenization, device digitalization and wallets, with service integration via Kafka or RabbitMQ.
Senior Backend Engineer - ERP Systems
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Senior Backend Engineer and Senior SDET roles
Nivelo, an integrated payments platform that helps payroll brands move money quickly and securely, is hiring Senior Backend Engineers and Senior SDETs. The work is full-time, remote within the US, paying $150k-$180k plus equity.
Senior Backend Engineer - Electronic Arts [EAG260818]
Senior Golang Backend Engineer building scalable backend services for an Electronic Arts game on GCP, working remotely from Canada during Pacific Time hours.
Backend Engineer, Payments
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