Empleos de senior backend engineer remote en Madrid

About Qualifyze,Founded in 2019, Qualifyze is a leading company in supply chain compliance management in the Life Sciences industry, trusted by over 1,500 pharmaceutical and healthcare companies globally. Our digital suite of solutions connects manufacturers, suppliers, and a global network of more than 250 auditors and quality experts.With a track record of...

We are hiring for one of our clients, seeking a Backend Engineer to work on a full-time basis. The role involves designing, building, and maintaining scalable backend systems to support high-traffic applications. You will collaborate with cross-functional teams to deliver robust solutions that meet performance and reliability requirements.Key...

Bark.Com is hiring a Senior Backend Engineer based in Spain for a fully remote role. As part of an agile team, you will innovate and solve user problems while maintaining a focus on performance and scalability.Your responsibilities will include developing APIs, mentoring engineers, and proposing improvements to the codebase. Candidates should have extensive...

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...

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...

Rain is looking for a Senior Software Engineer in EMEA. This remote position involves managing backend platform areas, including API integrations with 3rd-party vendors. The ideal candidate has at least 5 years of experience, is proficient in backend languages like Go and Python, and skilled in creating scalable, reliable systems. Responsibilities include...

New Relic is seeking a backend engineer to design, build, and operate JVM-based microservices (Java/Kotlin) powering massive telemetry pipelines and observability features. You will own services end-to-end, implement asynchronous patterns, and contribute to a scalable, resilient platform used by engineers globally.The role emphasizes strong collaboration,...

Qualifyze seeks a Senior Backend Engineer to join the Engineering team, shaping backend architecture and delivering scalable services that support our global audit network. You’ll collaborate across product, DevOps, and design to translate requirements into robust solutions.The role offers a hybrid work model in Europe, with remote flexibility and a salary...

New Relic is seeking a backend engineer to design, build, and operate JVM-based microservices (Java/Kotlin) powering massive telemetry pipelines and observability features. You will own services end-to-end, implement asynchronous patterns, and contribute to a scalable, resilient platform used by engineers globally.The role emphasizes strong collaboration,...

Playtomic is seeking a Senior Backend Engineer to build robust, scalable APIs and services. You will own your domain end-to-end, balancing technical excellence with business impact while collaborating with product, design, and frontend teams.You will work in a fast-paced, pod-based environment, shipping production-ready software and integrating AI-assisted...

Playson is seeking a Senior Backend Developer who thrives in a deeply hands-on environment and enjoys being close to the code daily. Focus on building, optimising, and scaling backend services for a high-load system where performance and reliability are critical.You’ll tackle complex real-time challenges at the platform core, improving latency, ensuring...

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...

Quik Hire Staffing is seeking a Senior Software Engineer to design, develop, and maintain a platform serving global users. This full-time, remote role involves collaborating with cross-functional teams to deliver scalable, high-performance applications.Responsibilities include creating robust software, following best practices, and contributing to...

Job Reference: 00000049-1Date Posted: 8 October 2026Recruiter: Coberon ChronosLocation: SpainRemote Working: 100% remote working possibleSalary: On ApplicationSector: Engineering, IT & TechJob Type: Permanent, Full-time, Home-office based, W2, RemoteEmail: cv@coberonchronos.comApply for this job nowJob DescriptionOur client is a world-class American B2B...

Parser is a boutique technology services and consulting firm delivering AI-enabled and data-driven solutions across Europe and the Americas. As a Senior Backend Engineer, you will own backend services powering a new conversational AI product, designing high-throughput microservices and real-time pipelines while integrating LLM-driven tool-calling...

We are knowmad mood!Somos una compañía líder en transformación digital, en constante evolución y a la vanguardia de la tecnología.Formado por más de 3.000 personas creativas, digitales e innovadoras conectadas a un propósito y capaces de generar conexiones con personas de todo el mundo. Un equipo responsable, flexible y con alta capacidad de...

Tecdata busca un Desarrollador Backend Senior especializado en Scala para un proyecto internacional de gran envergadura. La posición es 100% remota y ofrece la posibilidad de continuidad tras el proyecto inicial.Se requiere al menos 4 años de experiencia en desarrollo con Scala, sólidos conocimientos de herramientas como Play Framework, MySQL y...

TechsBCN busca un Desarrollador Backend Blockchain para trabajar de forma remota. Serás clave en el diseño, desarrollo y mantenimiento de nuestras soluciones descentralizadas, incluyendo la arquitectura de contratos inteligentes, la integración con redes blockchain y la construcción de APIs seguras, escalables y eficientes.Colaborarás estrechamente con...

Initium Software SL busca un Senior Java Backend Engineer para liderar el diseño de servicios distribuidos de alto rendimiento y tomar decisiones técnicas con criterio.Diseñarás, desarrollarás y operarás APIs REST con Java y Spring Boot, Kubernetes, Kafka y observabilidad, buscando excelencia en producción y disponibilidad.Ofrecemos modalidad 100%...

Zemsania busca Desarrollador/a Senior Java con dominio avanzado del inglés para unirse a su equipo dinámico y en crecimiento. Trabajarás en backend Java con APIs REST y participarás en una arquitectura orientada a eventos a gran escala.Requisitos: +4 años de experiencia y nivel B2+/C1 en inglés. Modalidad 100% remota dentro de España; desarrollo...