Empleos de senior backend java engineer remote en Madrid

Quik Hire Staffing is seeking a Backend Engineer for a full-time role to design, build, and maintain scalable backend systems powering high-traffic applications. You will collaborate across cross-functional teams to deliver robust, reliable solutions and contribute to code quality, testing, and deployments.The role emphasizes API development, database...

Abacum, the leading business planning platform, seeks a Senior Backend Engineer in the integrations team. You’ll move across languages and ecosystems, design and scale our integrations platform, and work with product, customers, and finance experts to translate complex workflows into robust software.You'll tackle data-heavy integration challenges, build...

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,...

Meet Urban Sports ClubWe 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...

Lever, Inc. is seeking a Senior Backend Engineer for Payments & Fintech in Spain. You will rebuild and scale the financial systems at the core of a growing global platform, owning architecture for billing, subscriptions, and entitlements. You will lead migrations from legacy systems while ensuring correctness, reliability, and auditable financial records....

T-Systems Iberia sucht eine/n Senior Backend Engineer mit Schwerpunkt System-Design und dem Aufbau produktiver Backend-Plattform-Services hinter AI-Inference-Endpunkten. Du treibst Architekturentscheidungen, entwickelst hochverfügbare, sichere Systeme, und arbeitest eng mit KI‑Infrastruktur- und Data‑Engineering-Teams zusammen.Du bringst umfangreiche...

Expereo is seeking a Backend Developer to join the Supplier onboarding and Quote Management teams and work directly on the computational core of our platform.You will write Python and/or dotnet every day, enhancing an existing Python/C# backend, creating new services, and solving real-world business problems including a constraint optimization engine and...

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...

Lever, Inc. is seeking a Senior Backend Engineer for Payments & Fintech in Spain. You will rebuild and scale the financial systems at the core of a growing global platform, owning architecture for billing, subscriptions, and entitlements. You will lead migrations from legacy systems while ensuring correctness, reliability, and auditable financial records....

Fundcraft is seeking a Mid or Senior Backend Engineer to join Product Enablement. You’ll help maintain and extend the platform, handle bugs, and collaborate with data fixes and roadmap delivery.You’ll work in a small, agile team close to users and stakeholders, with flexible hours and modern Girona offices.We value user-centric design, fast feedback, 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...

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, testingEnsure...

Como Senior Reverse Engineer y parte del equipo de Research & Innovation, te encargarás del análisis de arquitecturas, ejecutar de tareas de hacking de hardware y de llevar a cabo ingeniería inversa de firmware y protocolos de comunicación. También i dentificarás y explotarás vulnerabilidades , desarrollarás pruebas de concepto y darás soporte a...

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...

Amphora Logistics busca un Backend Developer con Python para unirse al equipo de Atenea, nuestro software de gestión logística inteligente. Desarrollarás servicios backend, APIs y arquitecturas orientadas a eventos, trabajando en una plataforma cloud-native para miles de operaciones diarias.Trabajarás de forma cercana con producto y equipos tecnológicos...

At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and professionally. This is how we aim to prevent, stop and cure diseases and ensure...

Pearson is seeking an experienced Senior Software Developer to design and deliver backend components for digital learning products. You will partner with product teams to set objectives, define timelines, and implement scalable services with AI integration across cloud environments. This role emphasizes autonomy, ownership, and collaboration within a...

Pearson is seeking a highly autonomous Senior Software Developer to design and implement backend components for AI-enabled digital products. You will lead architecture, API design, and deployment of scalable microservices, collaborating with data science teams to operationalize AI models. This role emphasizes ownership, DevOps practices, and adherence to...

Crew buscaAnalista Programador/a Senior para liderar el desarrollo backend con Spring Boot. El proyecto se basa en microservicios, usando Java, JPA/Hibernate y PostgreSQL, con seguridad mediante OAuth2 y JWT. Se valora experiencia en APIs REST y despliegue en AWS, trabajando en un entorno técnico avanzado. El candidato ideal tendrá capacidad para...

Pearson is hiring a Senior Software Developer to design and deliver backend components for AI-enabled educational products. You will work in cross-functional teams to implement scalable services, APIs, and microservices while integrating AI capabilities and maintaining strong technical documentation. The role emphasizes autonomy, ownership, and collaboration...