Empleos de senior javascript engineer en Zaragoza

Eaton is seeking a Customer Service Engineer for its explosion-proof electrical equipment and power distribution solutions. This highly technical, customer-facing role supports industrial customers across Spain and selected export markets in a remote environment.You will manage technical quotations, orders, and project communications from conception through...

Intecfy is building a strong database of Senior Mobile Engineers for upcoming freelance projects with European product companies and scale-ups.This role is open to experienced mobile developers working with native or cross-platform technologies.Responsibilities Develop and maintain mobile applications for iOS, Android or cross-platform...

UST España & Latam is seeking a Senior Android Engineer to join a multidisciplinary Mobile Engineering Team in Spain. You will design and develop high-quality Android apps, mentor others, and influence technical decisions while collaborating with product owners, designers, and engineers. Required: 5+ years of Android experience, Kotlin/Java, strong English,...

Workato seeks a seasoned Go backend engineer to design and optimize distributed systems that power our runtime platform. You will tackle high-concurrency components, memory-sensitive paths, and performance-critical code, collaborating across teams to ensure reliability and scalability.This role emphasizes low-level engineering and robust concurrency handling...

Semrush is seeking a Senior BI Engineer for the Enterprise Solutions Unit, working remotely in Spain. You will design and implement analytical dashboards using BigQuery and REST APIs, collaborate with Product Managers and cross-functional teams, and ensure scalable, high-quality data products for customers. You will lead end-to-end development, optimize SQL...

Trading-21 is seeking Senior Backend Engineers to join Europe’s fastest-growing mobile broker. You will own backend solutions end to end within a microservices environment, translating complex problems into durable, production-ready services. Work across teams to design for performance, scale and data integrity. You’ll contribute to a modern stack (Java,...

Grafana Labs is the company behind Grafana Cloud, the fully managed observability platform trusted by more than 10,000 organizations to ensure reliability, resolve incidents faster, and optimize telemetry at scale. Built on open source and open standards and designed for interoperability across any stack, Grafana Cloud brings AI to observability and...

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...

Lever, Inc. is seeking a Senior Software Engineer (Golang/TypeScript/React) for an independent contractor role based in Spain. You will develop backend Golang microservices and frontend UI with React and TypeScript, delivering scalable, data-intensive features. You will own features end-to-end, influence architecture, and drive improvements in performance,...

Workato seeks a seasoned Go backend engineer to design and optimize distributed systems that power our runtime platform. You will tackle high-concurrency components, memory-sensitive paths, and performance-critical code, collaborating across teams to ensure reliability and scalability.This role emphasizes low-level engineering and robust concurrency handling...

Super is a global technology group building The Playstack, powering sports, gaming and fan experiences across Europe and Latin America. We are seeking a Senior Backend Engineer to join the Player – Transact Tribe to shape scalable systems and drive platform-wide improvements. You will work on core platform components, cloud-native solutions, and...

Empresaconfidencial busca un/a Senior Backend AI Engineer para impulsar IA en productos ya en producción y desarrollar nuevas soluciones desde cero.Diseñarás servicios backend en Python, construirás pipelines RAG y integrarás APIs de LLM en entornos productivos, asegurando observabilidad y rendimiento. Trabajo 100% remoto desde España, con autonomía...

Rechat, Inc. is building the next generation of enterprise real estate technology. We seek a backend engineer who loves clean architecture and scalable data problems to support our CRM and Marketing platforms.This fully remote role requires deep Node.js and PostgreSQL expertise, with collaboration across cross-functional teams to ship high-impact features...

Elastic is seeking a Senior Software Engineer for the Elasticsearch storage engine team. You will design, implement, and optimize core storage and query components, focusing on performance, scalability, and efficient data layouts for observability workloads. The role is fully remote with a globally distributed team, requiring collaboration across continents...

Plexus Group in Spain is seeking a Senior Python Developer specialized in ETL for an important project. The role demands a strong background in Python and ETL processes, ensuring the design, development, and maintenance of scalable data pipelines. Ideal candidates will have over 4 years of experience, familiarity with tools like PySpark, AWS, Docker, and a...

CETRA BASE is seeking a Senior Ground Segment Engineer with GALILEO/EGNOS experience to support EUSPA. The role covers deployment follow-up, anomaly analysis, and ground-segment reviews in a multi-national setting across Spain or France. English proficiency and eligibility for security clearance, plus European travel, are required. We offer a permanent...

A leading technology company in Spain seeks a Senior Field Applications Engineer to provide critical technical support to customers. This role involves serving as the primary point of contact, assisting in designing and implementing solutions, and delivering technical presentations. The ideal candidate will have over 5 years of experience in a...

ToBeIT busca un profesional de backend con Java y experiencia en arquitecturas distribuidas y microservicios. Debe diseñar soluciones robustas y mantenibles, aplicando la arquitectura hexagonal y familiarizado con sistemas de mensajería como Kafka o RabbitMQ. Se valoran conocimientos en Kubernetes y entornos contenerizados, así como herramientas de...

Job details Posted 25 September 2026 Start date 01 September 2026 Location Calatorao Job type Permanent Discipline Mechanical Reference Job Function Lead Mechanical Engineer Buscamos un Mechanical Engineer con visión global, capacidad de liderazgo técnico y experiencia gestionando proyectos complejos en obra. Si te motiva formar parte de un entorno...

Elastic is seeking a Senior Java Developer to join the Elasticsearch team and drive the Inference API. You will build and maintain the plugin framework and REST API, collaborating with the inference team and the Kibana team to deliver scalable, reliable software across Elastic's cloud and hosted environments. Ideal candidates bring 5+ years of production...