Empleos de senior backend java en Madrid

Lever, Inc. is seeking a Senior Software Engineer to design, develop, and operate backend services powering an AI-enabled platform in the electric mobility space. You will build RESTful APIs using Node.js, TypeScript, and Python, and own distributed systems and architecture. You will collaborate with AI engineers, product, frontend, QA, DevOps, and external...

Barcelona, Spain · Full-time · Fully office-based €65,000–€85,000 gross per year Candidates must already be based in Barcelona. Visa sponsorship is not available. Build the systems behind AI-powered email marketing. Migma is building an AI platform that creates and sends on-brand email campaigns end to end. We are a two-person founding team in...

airapps is seeking a Backend Software Engineer to design and build server-side components in a dynamic environment. This is a fully onsite position based in Lisbon, requiring strong collaboration with cross-functional teams. The ideal candidate will have 5+ years of experience with Node.js, TypeScript, and cloud platforms like GCP. Benefits include top-tier...

About the companyBiorce is a pioneering Healthtech company dedicated to revolutionizing drug development through the power of AI. We are passionate about accelerating medical advancements and improving patient outcomes. Our team comprises seasoned clinical research professionals, data scientists, and AI experts, working collaboratively to bridge the gap...

Quik Hire Staffing is seeking a Senior Backend Engineer (Node.js, AWS) for a fully remote, full-time role. You will design, develop, and maintain scalable backend services for a high-traffic platform, collaborating with cross-functional teams to deliver low-latency solutions in a cloud-native environment. You will design and deploy Node.js microservices...

Seqera seeks a Senior Software Engineer to own the backend layer that turns computational capacity into configurable, billable services across AWS, Azure, GCP, Kubernetes, HPC schedulers, and GPU runs. You will shape an application layer that powers Seqera Intelligent Compute and its platform integrations. You’ll collaborate with product, platform, and...

bsport is hiring a Senior Backend Software Engineer to join the Financial Services team and craft a scalable payment and invoicing engine for clients worldwide. You will lead feature design, drive architecture decisions, and collaborate with Data, Product, and DevOps to deliver reliable, high-availability services. You will mentor peers, implement best...

Meet Urban Sports Club We are among the leading platforms for sports and wellness in Europe, dedicated to inspiring people to live active, healthy lives. With just one membership we offer access to thousands of fitness and wellness experiences across the continent.But what truly sets us apart? We believe our people are at the heart of everything we do. If...

zooplus is seeking a Senior Backend Software Engineer (Python) to join the Mobile Apps Team in Madrid. You will drive features, collaborate with the product owner, area architect, and teammates to clarify needs and deliver scalable backend services powering the mobile apps for millions of customers. You will participate in design decisions, own parts of the...

Aircall is a unicorn, AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer-facing teams. We’re redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace. As a Senior Software Engineer, you will design, develop,...

About the teamThe AI/ML Engineering team builds and operates ClickHouse's AI and machine learning products end-to-end. This includes the Agentic Data Stack, AI Functions, chDB, the in-Console copilot, and the AI/ML partnerships that distribute them — together with the shared components and expertise that let every other ClickHouse team ship AI in the...

Grupo Clave busca un/a Senior Back-End Developer para formar parte de un equipo técnico de alto rendimiento en un proyecto estratégico. Se valorará experiencia sólida en Java Spring Boot, microservicios y diseño de APIs (REST/GraphQL/gRPC). El puesto ofrece modalidad 100% remota, horario flexible y oportunidad de crecimiento técnico y liderazgo dentro...

Pearson is seeking an experienced Senior Software Developer to design and deliver AI-enabled backend services for our digital products. You will partner with product owners, lead backend projects, and architect scalable APIs, focusing on microservices deployment and AI integration. This full-time, hybrid role supports collaboration from Madrid or Poznań...

Fever is seeking a Senior Backend Engineer to shape the backbone of our live-entertainment平台 from Spain with a 100% remote-friendly setup. You will thrive in a fast-paced, high-growth environment, delivering scalable services, refining architecture, and partnering with Product, Data, and other teams to improve our platform’s performance and...

Trbl Services busca un/a desarrollador/a Backend senior para diseñar, desarrollar y mantener servicios robustos con Node.js y TypeScript en un entorno internacional. Trabajarás con APIs REST y GraphQL, y modelos de datos seguros con TypeORM y PostgreSQL. Se requiere más de 5 años de experiencia, dominio de TypeScript y Node.js, pruebas con Jest y...

Elastic's Observability Streams team is building Elastic's unified data pipeline and the backend services powering Logstash. You will design, build and operate features in Java and Golang, contribute to the OpenTelemetry Collector, and help deliver reliable data routing at scale. This remote-first, globally distributed role demands strong communication, deep...

Join a fast-growing fintech team building scalable payment solutions across the EU/UK, with opportunities for growth, flexible work arrangements, and a competitive compensation package.

Join to apply for theSenior Software Engineer (Python / Backend) ID41787role atAgileEngine .AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in application development and AI/ML, and our people‑first culture has earned us multiple Best...

You will take ownership of a backend system that is critical to the company and our customers. You will have the opportunity to help define our roadmap and find the best technical solutions. You will also have time to run some experiments and bring new ideas to the table. Your responsibilities:Hands-on code implementation, code reviews, testing Ensure...

Elastic, the Search AI Company, seeks a Senior Software Engineer for the Integrations Team to enable Elastic inside the AI ecosystem. You will build and maintain the MCP server, agent skills platform, and third-party integrations, working with Go and other languages while collaborating with product teams and partners. You will contribute to the Elastic CLI,...