Empleos de senior java backend engineer remote en Madrid

Grafana Labs is the company behind Grafana Cloud, the fully managed observability platform trusted by more than 10,000 organizations to ensure reliability, resolve incidents faster, and optimize telemetry at scale. Built on open source and open standards and designed for interoperability across any stack, Grafana Cloud brings AI to observability and...

Apipana.io en Sevilla busca un Senior Software Engineer para diseñar y desarrollar soluciones backend escalables, robustas y mantenibles, asegurando altos estándares técnicos. Serás nexo entre engenharia y arquitectura del cliente, traduciendo requisitos de negocio en soluciones técnicas viables y liderando decisiones de diseño. Trabajarás con...

Playtomic is seeking a Senior Backend Engineer to build robust, scalable APIs and services. You will own your domain end-to-end, balancing technical excellence with business impact while collaborating with product, design, and frontend teams. You will work in a fast-paced, pod-based environment, shipping production-ready software and integrating AI-assisted...

Playson is seeking a Senior Backend Engineer to develop and optimize promotional features for our gaming platforms. You will own core services, tackle performance and scalability, and drive technical decisions in a fast-paced SaaS environment. You’ll work with Node.js and TypeScript in a microservices ecosystem, collaborate with distributed teams, and...

Lever, Inc. is seeking a Senior Backend Engineer – Data Core for a partner company based in Spain. You will design and run data infrastructure powering a large-scale creator data platform, handling 400M+ creator profiles across Instagram, TikTok, and YouTube. This remote-first role emphasizes autonomy, end‑to‑end ownership, and cost-efficient, reliable...

Jobgether SRL, on behalf of a partner company, is seeking a Senior Backend Software Engineer as part of a Future Hiring Program. This remote Europe role is based in Spain and focuses on building scalable backend services for global enterprise clients. You will design, develop, and deploy cloud-based systems using C#, .NET, C++, and related technologies while...

Intellia is seeking a Senior Python Backend Engineer to design and build scalable backend services for agent-to-agent communication on AWS AgentCore platforms. You will work on Python-based backends, API integration, and asynchronous event-driven patterns to enable robust multi-agent interactions. The role emphasizes API design, registration and discovery...

Grafana Labs is hiring a Senior Software (Database) Engineer to help build the underlying storage system for a general purpose data platform. You will work on a SaaS-ready database layer with OLAP/OTLP capabilities, designed to run across cloud providers, with high autonomy and cross-functional collaboration. The role emphasizes pragmatic architecture...

HBX Group is seeking a senior Backend Engineer to develop core functionalities for the CivitFun SaaS platform in the hospitality sector. You will work on integrations with external systems (PMS, payments, locks), architecture design, and cloud deployment from end-to-end. You will design and implement secure backend services with Node.js, collaborate on...

Scrambly S.r.l. is seeking a Senior Backend Engineer to help build the core systems behind Scrambly. You’ll work on user-facing product systems and the internal platform, solving scalability challenges for a global, adtech product. You’ll design and maintain scalable Node.js/NestJS RESTful APIs, mentor engineers, and collaborate with Product, Design and...

Playson is seeking a Senior Backend Developer to build, optimise and scale high-load backend services where latency matters. You will own core features and write production-grade code daily in a distributed environment. Join a cross-functional team using Node.js/TypeScript, Kafka and cloud-native infrastructure on Kubernetes with AWS/GCP. Expect on-call...

Urban Sports Club in Valencia is seeking a Senior Backend Engineer to enhance our technology offerings. In this role, you'll architect and develop impactful Golang and PHP services, collaborating with cross-functional teams to foster an outstanding wellbeing experience. Ideal candidates will have over 5 years of backend engineering experience, demonstrating...

A leading technology firm is looking for a Python Developer in Madrid. This role requires over 5 years of experience in backend systems at scale, utilizing technologies like AWS and Kubernetes. The ideal candidate must have strong communication skills to collaborate effectively with an international team. Benefits include flexible working options,...

Cloudbeds, a fully remote-first hospitality platform, is seeking a Senior Backend Engineer to shape scalable backend architecture and deliver high-performance services for customers worldwide. You will work across PHP and Java ecosystems, utilize Laravel/Symfony, MySQL, Docker, Kubernetes, and AWS, and collaborate with global teams to innovate and improve...

A technology recruitment firm is looking for a Senior Back-end Engineer with PHP expertise to develop and enhance payment systems. This remote role offers the opportunity to work in a dynamic environment, focusing on scalability and innovative solutions. Ideal candidates will have over 5 years of PHP experience and knowledge of Domain-Driven Design and Agile...

Empresaconfidencial busca un/a Senior Backend AI Engineer para impulsar IA en productos ya en producción y desarrollar nuevas soluciones desde cero. Diseñarás servicios backend en Python, construirás pipelines RAG y integrarás APIs de LLM en entornos productivos, asegurando observabilidad y rendimiento. Trabajo 100% remoto desde España, con autonomía...

T-Systems Iberia sucht einen Senior Backend Engineer, der zentrale Plattform-Services, API-Design und robuste Microservices für skalierbare KI-Infrastruktur entwickelt. Sie arbeiten eng mit ML-Infrastrukturteams zusammen und verantworten Sicherheit, Observability und CI/CD. Sie verfügen über umfangreiche Python-/API-Entwicklung, verteilte Systeme,...

MediaMarktSaturn Plattform Services GmbH in Barcelona is seeking a senior backend developer to design, implement and operate scalable services for our Global Loyalty ecosystem. You will work with Kotlin, GCP, and modern DevOps practices to deliver reliable solutions that power millions of interactions across Europe. The role emphasizes event-driven...

A global consulting firm is looking for a skilled Backend Developer (Node.js) based in Barcelona, Spain. In this role, you will design and develop scalable backend systems that support high-impact digital solutions for international clients. Ideal candidates have at least 5 years of software engineering experience and proficiency in Node.js with Fastify. The...

Smart Working Solutions is hiring a Senior PHP/Symfony Engineer to own backend development within a mature Symfony platform, upgrading from 6.x to 7, and collaborating with Angular, TypeScript, and Python AI microservices. The role emphasizes architecture, independence, and remote collaboration across global teams. The ideal candidate has 8+ years in...