Empleos de remote java backend engineer en Madrid

We are bsport. The place to be! bsport is an all-in-one platform combining boutique fitness and advanced technology. Our platform helps our partners manage their bookings, payroll, marketing and more, to streamline operations and boost their commercial success. We are bsport. The place to be! bsport is an all-in-one platform combining boutique fitness and...

Grafana Labs is seeking a Staff-level Backend Engineer to design and ship core backend services powering a context layer for AI-driven data intelligence. You’ll build the foundation for a scalable, multi-tenant SaaS, with ingestion, storage, APIs, and agent-facing integrations in a production-grade environment. This remote-first role offers Spain as a base...

Grafana Labs in Spain is seeking a Senior Software (Database) Engineer to help build the underlying storage system for a general purpose data platform. The role emphasizes autonomy, architectural pragmatism, and the ability to evolve from prototype to production-grade SaaS. We value engineers who can design scalable, multi-tenant services while maintaining...

Grafana Labs is seeking a Senior Engineer for Pyroscope, our open-source profiling platform, in a fully remote role across the global team. You will own end-to-end projects, design core database components, and align with customers to shape the product roadmap while maintaining a strong focus on reliability and cost efficiency. We value collaboration across...

Mimica is hiring Senior+ engineers to lead backend development for ML-driven tasks. You will own core Python services interfacing with ML models and contribute to our platform architecture and DevEx. This fully remote role offers collaboration with Data Scientists and scalable systems. You will join a Python-focused chapter, shaping technical direction,...

Chainlink Labs is seeking a Software Engineer for the CCIP Protocol to design and maintain services that coordinate fast, fault-tolerant cross-chain transactions under adversarial conditions. You will join a team focused on reliability, security, and scalability across a remote-friendly environment. In this role, you will work with Go, Rust, or TypeScript to...

Anyone AI Inc. is seeking a remote, part-time, project-based expert evaluator to design and assess realistic software engineering tasks, spanning bug fixing, feature development, refactoring, and test generation. Contributors will work remotely, control their own schedule, provide their own tools, and may serve multiple vendors, with per-project compensation...

Grafana Labs, the company behind the open observability cloud, is a fully remote organization with 1,600+ team members across 40+ countries. This Senior Engineer role on Pyroscope focuses on scaling a distributed database, improving profiling capabilities, and integrating with the Grafana stack. You will own end-to-end projects, drive operational excellence,...

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...

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...

Workato is seeking a Staff Backend Developer (Ruby/Go) to join our Engine team, focusing on the Recipe runtime and distributed architecture. You will contribute to performance, scalability, storage, durability, and concurrency guarantees across complex services. We welcome Ruby and Go experts who can lead architecture, review code, and drive improvements...

Prima is seeking a Rust Engineer to join our dynamic teams in Spain. You’ll architect and deliver scalable services, collaborating with product managers to translate business requirements into robust software solutions. Join over 350 engineers delivering impactful insurance software. We offer flexible work options—work from home, the office, or a...

Lever, Inc. is seeking a Backend Engineer based in Spain to join a small, ambitious product team. You will own the central API and backend services, primarily using Node.js and TypeScript, and focus on API design, data modeling, performance, and developer experience. This remote, asynchronous role offers substantial technical ownership, collaboration with...

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...

Partner Company is seeking a Backend Engineer based in Spain to join a small, autonomous product team. You will own the central API and backend services, focusing on Node.js and TypeScript to power data, calculations, and core product experiences. You will design intuitive APIs, scale systems, and support MVPs through experiments, working in a fully remote,...

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...

Airalo is hiring a backend engineer to build and maintain scalable services for a global customer base. You will implement robust APIs, optimize database queries, and contribute to a modular, service-oriented architecture. The role requires 3-5 years in backend development with PHP, strong OOP knowledge, and experience with Laravel or Symfony. You will work...

FYUL is seeking a Senior Back-end Software Engineer to join the Commerce Pillar. You will shape our commerce solutions by building reliable, scalable systems and collaborating with product teams. The role offers remote work options and an office in Riga, with flexible hours and strong emphasis on ownership and continuous learning. Ideal candidates have 5+...