backend engineer

Sngular busca un/a desarrollador/a backend senior para diseñar, construir y escalar sistemas en Java con Spring Boot. Participarás en Arquitectura Hexagonal, aplicarás Domain-Driven Design y potenciarás el desarrollo con herramientas de IA.Trabajarás con arquitecturas orientadas a eventos y Kafka, manteniendo alta calidad de código mediante pruebas y...

UST is seeking a Java Developer to join a highly innovative team working within a microservice-based cloud environment in the utility technology sector. You will design, develop, and support secure, scalable Java services, APIs, and integrations that connect critical business systems.The role emphasizes hands-on coding with Spring Framework, Hibernate/JPA,...

Softtek te ofrece un rol de Senior Backend Developer en Madrid, trabajando en un entorno tecnológico a gran escala donde la innovación, la calidad de código y la mejora continua son habituales. Buscamos experiencia sólida en Java 17/21, microservicios y APIs REST, con Kafka, bases de datos MongoDB y PostgreSQL, y Spring Boot. La posición es híbrida,...

Amazon Spain Services, S.L.U. is seeking a Software Development Engineer in Madrid to join the Ring backend team.You will design, implement, test, and iterate on low-latency, secure systems powering doorbells and cameras, working with cross-functional engineers and product managers in a fast-paced environment. The role focuses on building scalable backend...

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...

knowmad mood, una compañía líder en transformación digital, busca un/a profesional con amplia experiencia en desarrollo backend Java para diseñar y desplegar servicios y APIs, colaborando en proyectos de integración y evolución tecnológica. Se valorará dominio de Spring, REST/SOAP y pruebas automatizadas; se ofrece contrato indefinido, modelo de...

GMV in Tres Cantos, Spain is seeking a passionate back-end developer for its Space Traffic Management projects. The role involves developing new functionalities in a microservice architecture and requires expertise in Java or Python, along with Linux and Docker skills. GMV offers flexible working conditions, personalized career development, and a well-being...

Are you ready to build software that solves real-world challenges on the frontlines of innovation? Experience Level: Medior (4+ years of relevant experience) The Opportunity: A role with Real Impact At Antonie, we combine advanced AI with deep expertise in agriculture, soil health, and sustainability to create solutions that make a real difference. We are...

VISEO IBERIA in Madrid seeks a Python Software Engineer to drive the development and maintenance of data integration APIs within our Customer Data Platform, focusing on quality, scalability and automation. You will work with Azure services and collaborate with Data Engineering teams. Requirements include 3+ years of Python experience, API design skills, and...

A leading tech provider in Valencia is seeking a Mid/Senior IT Developer experienced in Java and AWS. Responsibilities include developing scalable backend services and RESTful APIs within an Agile environment. The ideal candidate will contribute to cloud-native solutions and ensure high code quality. The company offers flexible hybrid work, top benefits, and...

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...

Una empresa tecnológica en crecimiento en Majadahonda busca un Desarrollador/a Sr Backend con amplia experiencia en Python Django para liderar el desarrollo de su infraestructura backend. Se requiere un mínimo de 5 años de experiencia, habilidad para diseñar arquitecturas escalables y trabajar con Jira. El puesto permite trabajo híbrido y ofrece...

Merlin Digital Partner in Madrid, Spain, is seeking a Senior Software Engineer (Python) to design and build backend systems powering connected health products. You will own architecture and production deployments, collaborating with Product, AI, Embedded and Frontend teams to deliver scalable APIs and data models.Requirements include 5+ years in backend,...

AiFi is seeking a Backend Software Engineer to optimize highly concurrent systems and scale our store operating systems from small to large venues. You will shape core backend microservices and collaborate with app developers and product managers to address real-world use cases and bottlenecks.Join a platform that enables real-time analytics and scalable...

Bark is seeking a Backend Engineer to join our growing team. You’ll help build scalable product features using Python, crafting robust APIs and services that power our marketplace.You will work across the stack from idea to deployment, optimizing data stores, integrating third-party services, and mentoring peers as we scale to handle increasing demand and...

BCNC Group busca un Senior Backend Developer Java para impulsar una nueva plataforma global orientada a optimizar procesos de logística y distribución. Te unirás a un equipo ágil y contribuirás en decisiones de diseño y evolución del producto.Se requieren 4–5 años de experiencia, Java 21 y Spring Boot, API First, y experiencia con...

Sinch AB is looking for a Senior Software Engineer based in Spain to design and build the next generation of the Contacts Platform. The role is primarily remote, with occasional office visits to Madrid. Responsibilities include developing scalable distributed systems, maintaining backend services, and collaborating with cross-functional teams. Ideal...

Pluxee is a global player in employee benefits and engagement that operates in 28 countries. You will join the Payments Squad as a Senior Backend Engineer, building the engine that moves money globally.We design resilient, mission-critical systems where transactional precision, idempotency, and fault tolerance are at the heart of everything we do. You will...

Seeking a Senior Backend Engineer to design and build scalable APIs and backend systems for autonomous robotics inspection platforms, enabling integrations with customer systems and cloud platforms.

Ai Scale Up is seeking an experienced Backend Engineer to advance our Python backend and AI pipeline stack in an international, 100% remote setup. You will design robust REST APIs, implement strong typing, and craft agentic workflows with LangGraph and LangChain for large-scale data processing.The role requires hands-on experience with Python, FastAPI, LLM...