Empleos de senior java backend engineer microservices en Madrid

Ciklum in Málaga, Spain, is seeking a Senior Python Engineer to join a cross-functional team building backend features. You will implement AI on the client's internal platform, support high-quality code, and collaborate across planning, development, testing, and deployment. The role emphasizes PostgreSQL design, Alembic migrations, and REST API work, with a...

Mambu Payments (formerly Numeral) is hiring Senior Backend Software Engineers to help build the next generation of bank connectivity and payment automation products with a focus on security, stability and performance. You will own architectural decisions for high-impact projects, collaborate with Product Managers and DevOps, mentor engineers, and contribute...

IFS in Madrid, MD, ES is seeking a Senior Software Engineer, AI Agents to build the AI-driven backend powering enterprise workflows on site in Madrid. You will develop the session and memory model, retrieval, and agentic flows for multi-step work. You will implement multi-tenant SaaS capabilities, ensure secure integration with API gateways, and optimize for...

Lever, Inc. is seeking a Senior Backend Software Engineer for its Future Hiring Program, based in Spain. You will join a forward-thinking engineering team delivering high-impact software for global enterprise clients across diverse industries. Working remotely within Europe, you will contribute to design, development, and deployment of scalable backend...

Playtomic is seeking a Senior Backend Engineer for the Payments team in Madrid. You will develop and maintain APIs and services to enable smooth frontend-backend communication and integrate third-party payment gateways to ensure secure transactions. You will work with cross-functional teams to design innovative solutions, optimize payment processing, and...

Grafana Labs is a fully remote company with a global team creating Grafana Cloud, a composable observability platform. We value open-source culture, transparency, autonomy, and trust, and we welcome applicants from multiple countries including Spain. You’ll work on a cloud-native stack (Go, Kubernetes) with on-call rotations, collaboration, and a focus 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...

Vortech PCI Group busca un/a Senior Backend Developer para unirse a un nuevo hub de Inteligencia Artificial Generativa en Valencia, dentro de una organización internacional del sector financiero. La persona seleccionada participará desde el inicio en la definición y construcción de una plataforma de Agentic AI sobre Azure, contribuyendo a decisiones de...

Finom is seeking a Senior Backend Engineer who thinks like a product builder and thrives in a collaborative cross-functional team. You’ll own backend systems, focusing on robust, scalable financial infrastructure, in a domain team with frontend, mobile, ML/AI, and QA partners across Europe. You’ll bring deep .NET/C# expertise, experience with...

Miratech, a global IT services and consulting company, is seeking a Senior Backend Engineer (Golang) to design and build scalable backend systems. You will develop distributed services, robust APIs, and event-driven architectures while ensuring performance and reliability. Occasional frontend work with React may be required. The role emphasizes API design,...

AgioGlobal Technology busca un/a Desarrollador/a Python Senior con amplia experiencia para diseñar, desarrollar y mantener servicios backend en Python, con foco en calidad de código y escalabilidad. Se trabajará con APIs usando FastAPI, funciones serverless con AWS Lambda y contenedores Docker, con enfoque DevOps y teletrabajo 100%. Salario entre 38.000 y...

AgioGlobal Technology busca un/a Desarrollador/a Python Senior con amplia experiencia para diseñar, desarrollar y mantener servicios backend en Python, con foco en calidad de código y escalabilidad. Se trabajará con APIs usando FastAPI, funciones serverless con AWS Lambda y contenedores Docker, con enfoque DevOps y teletrabajo 100%. Salario entre 38.000 y...

TECDATA ENGINEERING busca un Senior Backend Developer (Scala) para trabajar en la localización de Sage HCM para el Reino Unido y automatización de despliegues, facturación y aprovisionamiento. Formarás parte de un equipo que corrige errores y atiende solicitudes de clientes de pago, con énfasis en rendimiento y escalabilidad. Se requieren sólidos...

Aircall, a unicorn AI-powered customer communications platform, is hiring a Senior Backend Engineer in Madrid. You will design, build, test, and deploy backend systems using TypeScript/Node.js with a strong emphasis on security, scalability, and performance. Collaborate with product managers, designers, and engineers to deliver end-to-end solutions, mentor...

Fever is recruiting a backend engineer to build geo‑localized user platform services with a focus on data residency, multi‑region reliability and privacy compliance. You will contribute to a Python‑based stack, CI/CD pipelines, and cloud infrastructure. Within three months you design and implement end‑to‑end features, discuss architecture, and...

HIBERUS TECNOLOGÍA está buscando un Senior Software Engineer .NET para diseñar, desarrollar y desplegar soluciones que integran IA en el ciclo de vida del software. Buscamos un perfil orientado al desarrollo backend, con capacidad para entender el negocio y aplicar IA para aportar valor.Ofrecemos salario competitivo, contrato indefinido, formación...

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...

Supersonik seeks Senior Engineers to join our core team in Barcelona. You will tackle complex technical problems, shape product architecture from day one, and thrive in a fast-growing startup. You should be fluent in modern Python, async programming, and adept at building scalable, event-driven systems. You’ll work across frontend to infrastructure to...

Quintall is seeking a Senior Backend Developer to join its IT Digital Marketing team in Barcelona. You will design, build, and continually improve backend services and APIs that support digital marketing and sales capabilities. As a senior member of an international Agile team, you will own backend solutions, contribute to architecture and standards, and...

Sage is seeking a Senior Backend Developer to join our HCM localisation team based in Barcelona. In this hybrid role, you will design and maintain scalable backend services for our cloud-based enterprise product. Strong expertise in Scala, MySQL, and AWS is required. The candidate will work collaboratively to improve product performance and maintain robust...