Backend Engineer jobs in Spain

Own the Engineering. Make the Scheduling Magic happen. At Doodle, we're building the future of scheduling and productivity, tackling complex challenges at the intersection of human collaboration and digital efficiency. We believe in crafting elegant solutions to intricate problems, and we're looking for passionate Software Engineers who share this drive . You're more than a coder; you're a...

Workload: 80–100% Join Axpo’s digital journey and help build data-driven products that shape the future of energy. We value quality, collaboration, and continuous learning—and we’re excited to welcome your perspective. What you will do: - Design and develop API-based web applications and services, integrating data and maintain back-end systems for optimal functionality and user experience. -...

Responsabilidades - Diseñar e implementar microservicios y APIs REST/GraphQL en TypeScript (Node.js) y Python. - Construir soluciones event-driven integrando colas/streams (SQS/SNS, Kinesis/EventBridge o Kafka) y BPM/Step Functions. - Diseñar y operar componentes en AWS (Lambda, API Gateway, S3, RDS/DynamoDB, IAM), asegurando seguridad, coste y resiliencia. - Definir Infraestructura como...

🚀 Sobre nosotros: Somos una compañía de marketing tecnológico en fase scale-up (145 personas y creciendo), con una firme apuesta por la IA Generativa para transformar cómo las empresas entienden y ejecutan sus estrategias de marketing digital. Nuestro objetivo es crecer de manera sólida, eficiente y global, impulsando la innovación y el impacto real en nuestros clientes. 🧭 Tu misión Diseñar,...

We are looking to fill this role immediately and are reviewing applications daily. Expect a fast, transparent process with quick feedback. Why join us? We are a European deep-tech leader in quantum and AI, backed by major global strategic investors and strong EU support. Our groundbreaking technology is already transforming how AI is deployed worldwide — compressing large language models by up...

💜 About Loyal Guru La plataforma de Loyal Guru resuelve los desafíos únicos del negocio retail a través de iniciativas de loyalty de próxima generación, ofertas personalizadas a escala, analítica avanzada de retail y nuevas oportunidades de monetización. Nuestra solución simplifica las complejidades que surgen del alto volumen de shoppers, transacciones y datos del Enterprise Retail....

Blackwall is an AI-enabled security and web infrastructure company dedicated to safeguarding web ecosystems from automated threats. Deployed across 2.3M+ websites and applications, GateKeeper, the company’s flagship product, is trusted by 100+ service & hosting partners globally to enhance performance, reduce operational costs, and maximize revenue by protecting SMB customers worldwide against...

We are Merlin Digital Partner! A leading IT and Digital headhunting company who stands out from the crowd, boasting over a decade of experience. We've successfully collaborated and played a pivotal role in the growth of industry heavyweights such as Wallapop, Glovo, Banc Sabadell, among others. Our emphasis lies in people-centric approaches and optimizing the selection processes. Our mission is...

We are Merlin Digital Partner! A leading IT and digital headhunting company who stands out from the crowd, boasting over a decade of experience. We've successfully collaborated and played a pivotal role in the growth of industry heavyweights such as Wallapop, Glovo, Banc Sabadell, and Factorial, among others. Our emphasis lies in people-centric approaches and optimizing the selection processes....

This year marks 10 years since we launched the idea that simplifying our customers' lives is possible by offering an innovative solution that allows them to easily subscribe to, manage, and switch all types of contracts through a unique and intuitive platform. In that time, we have supported more than 1.5 million customers in France, Spain, and Italy, while investing in new verticals and...

We are looking for a Senior Software Engineer to join our early team and help build the core platform of a startup transforming Audit 4.0 and control management for companies. Who are we? At Byld, we don’t just build businesses—we create game-changing ventures in collaboration with leading corporations. Since 2017, we’ve been designing, validating, and launching new companies, blending the best...

WHO ARE WE? Sateliot is a Barcelona-based Startup in the New Space sector, becoming the first satellite telecommunications operator that will provide global and continuous connectivity to all the elements that will make up the massive Internet of Things (IoT) universe under the 5G protocol. In order to do so, Sateliot is launching a constellation of last generation nanosatellites, located at...

Workload: 80–100% Help us shape intuitive mobile experiences for a leading Swiss energy brand. Join a cross-functional team in Madrid, build with a modern stack, and make an impact for millions of users. What you will do: - Architect, develop, and maintain scalable mobile apps with React Native (0.79+), TypeScript (5+), and Expo - Lead features end-to-end from concept to deployment with strong...

We are looking to fill this role immediately and are reviewing applications daily. Expect a fast, transparent process with quick feedback. Why join us? We are a European deep-tech leader in quantum and AI, backed by major global strategic investors and strong EU support. Our groundbreaking technology is already transforming how AI is deployed worldwide — compressing large language models by up...

We are Merlin Digital Partner! A leading IT and Digital headhunting company who stands out from the crowd, boasting over a decade of experience. We've successfully collaborated and played a pivotal role in the growth of industry heavyweights such as Wallapop, Glovo, Banc Sabadell, among others. Our emphasis lies in people-centric approaches and optimizing the selection processes. Our mission is...

GenAI Engineer (Python) – Spain (100% Remoto) Ubicación: España (contratación local) Modalidad: Full-remote Idioma: Español (C1) + Inglés (B2+) Sobre el rol Nos sumamos al core engineering team que está construyendo una plataforma de AI Agents de próxima generación para un banco líder en España. Buscamos un/a GenAI Engineer con base sólida en Python y buenas prácticas de ingeniería para...

Workload: 80–100% Join our dynamic team in Madrid and help shape the future of digital energy solutions. As part of Axpo's innovative IT center, you'll build cutting-edge web applications that drive the energy transformation forward. What you will do: - Architect, develop, and maintain high-quality, scalable frontends using React 18+ and TypeScript 5+ - Lead the development of new features...

Fans de la ingeniería informática y eléctrica, ¡Bienvenidos a vuestra transformación digital! 🚀 Nosotros somos Merlin Digital Partner, una consultoría líder en la captación de talento IT & digital con más de 10 años de experiencia. Hemos escalado grandes referentes del sector como Wallapop, Glovo, Banc Sabadell o Factorial, entre otros. Enfocados en humanizar y agilizar los procesos de...

Everything you are looking for and more 📦 As Strategy Analyst you will play a key role in supporting strategic decision‑making by delivering high‑quality business analysis, market intelligence, and process optimization insights. This role involves owning executive‑level reporting, identifying performance drivers, and transforming data into clear, actionable recommendations for senior...

WHO ARE WE? Sateliot is a Barcelona-based Startup in the New Space sector, becoming the first satellite telecommunications operator that will provide global and continuous connectivity to all the elements that will make up the massive Internet of Things (IoT) universe under the 5G protocol. In order to do so, Sateliot is launching a constellation of last generation nanosatellites, located at...