Empleos de backend engineer nodejs en Madrid

Key Responsibilities Design and Implement Infrastructure Solutions: Architect and set up new Internet Data Centers (IDCs) to meet scalability and performance requirements. Analyze and Optimize Production Issues: Investigate and analyze real-world production cases, such as performance bottlenecks or system inefficiencies, to derive actionable insights and...

España Remoto Full-time 3+ years of experience in backend development with Java (Spring Boot) or. NET (C#), combined with hands‑on experience designing and integrating AI‑powered solutions using LLMs. Knowledge of RAG, AI agents, orchestration, prompt engineering, function calling / tool use, and AI frameworks such as Azure Open AI, Azure AI Foundry,...

¿Buscas tu próximo reto profesional? ¿O simplemente estás echando un vistazo? Tanto si te ha traído hasta aquí la curiosidad como la ambición, ¡Avantio podría ser exactamente lo que estás buscando! ¿Quiénes somos?No queremos aburrirte con la típica biografía interminable de empresa. ¡Aquí tienes un breve resumen de lo que hacemos!...

Staff Software Engineer, Backend (Recoveries) Remote Spain At affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. The Recoveries team, part of affirm’s Repayments area, builds the platform that determines the most effective way to...

Madrid Office Aircall is a unicorn, AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer-facing teams. We're redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace. Our momentum comes from a simple idea: help teams...

At Goodweek, we're building a next-generation AI tool designed to revolutionize business productivity. We are focusing on delivering a secure, scalable, and reliable system that supports real business use cases across different departments. The goal is to make AI practical, controlled, and truly embedded in how modern organizations operate. Our team spans...

Senior Fullstack Engineer - Spain - 100% Home Office Friendly (within +/- 2 hours of the UK)Los candidatos deben tomarse el tiempo de leer atentamente todos los elementos de este anuncio de empleo. Por favor, envíen su solicitud sin demora.Live shows make us feel good. They're a time to hang with our friends, discover new artists or lose ourselves on a...

Cabify in Madrid is hiring Backend Software Engineers (Backend) to design and build AI-enabled distributed systems using Go/Elixir/Ruby, with a strong emphasis on quality, production readiness, and collaboration with Data Science.The role is fully on-site at our Madrid office (Calle de Pradillo 42). We value adaptability, curiosity about AI, and ownership of...

Company Description Work with Us. Change the World. At AECOM, we’re delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world’s trusted infrastructure consulting firm, partnering with clients to solve the...

Join our expanding engineering team!Los candidatos deben tomarse el tiempo de leer atentamente todos los elementos de este anuncio de empleo. Por favor, envíen su solicitud sin demora.We're hiring a permanent Senior Backend Engineer to join our Asset Sales group as we scale one of the most important parts of M-KOPA's FinTech platform. Build distributed,...

¡Capitole sigue creciendo - y queremos que formes parte del viaje!Estamos buscando un/a Senior Back End Engineer con +5 años de experiencia para unirse a nuestro increíble equipo.Funciones: Senior Backend Engineer (Node.js / Azure / APIs / Integración de Sistemas) Formar parte del equipo de ingeniería responsable del diseño, desarrollo y evolución del...

A Little Bit About FlanksFlanks is shaking up the wealth management industry by making it simpler and way more efficient for financial institutions. Our SaaS platform is designed to help banks, family offices, and wealth managers get a full picture of their clients' financial assets—all in one place. Founded in 2019 and based in Barcelona, we've brought...

J.P. Morgan Personal Investing is seeking an engineer to join a squad delivering a first-class mobile and web investment experience.You will build and integrate with digital asset providers, work in a Java/Spring Boot/Kotlin stack, and evolve architecture toward microservices on Kubernetes with Kafka. You will collaborate with Product, Compliance and Risk to...

Vic.ai in Madrid, Spain, is seeking a Senior Backend Engineer to own the integration platform that connects our customers' ERP systems to Vic.ai and push results back at scale. We’ll build and operate backend services with TypeScript/Node.js, Elixir/Phoenix, and Python, deployed on AWS, focusing on reliability and performance for a high-scale AI...

At OneSpan, we specialize in digital identity and anti-fraud solutions that create exceptional and secure experiences. We are looking for an experienced Senior Backend Engineer to join our Barcelona-based backend team and drive product features from conception to production with customer value at the forefront. You'll own the delivery side of our platform...

Senior Backend Engineer (Java & Microservicios)Impulsa la arquitectura backend del futuro con Java y sistemas distribuidosEn Initium Software conectamos al mejor talento técnico con los proyectos más desafiantes e innovadores del mercado. No somos una consultora tradicional; somos socios estratégicos que creemos en el impacto real a través de la...

We're seeking exceptional Backend Product Engineers to build the infrastructure powering the future of AI-driven email marketing. You'll design and scale systems that handle millions of emails, real-time content generation, and seamless integrations. Full-time position based in Barcelona with competitive compensation.Migma.ai transforms email creation from a...

full&fast, una compañía de tecnología energética con sede en Madrid, busca un/a Backend Developer para crecer la plataforma full&CONNECT, conectando baterías, inversores y cargadores para clientes industriales y logísticos.Las cualificaciones, habilidades y toda la experiencia relevante necesaria para este puesto se pueden encontrar en la descripción...

Senior Backend EngineerCompruebe que cumple con los requisitos de habilidades para este puesto, así como con la experiencia asociada, y luego envíe su CV a continuación.Who is Parser?Technology alone does not create impact - the right teams do. Founded in 2018, Parser is a boutique technology services and consulting firm helping global organisations solve...

At Parser, we are seeking a Senior Backend Engineer with strong MLOps expertise to join the Machine Learning Engineering team of a global leader in the travel industry. In this role, you will help design, build, and maintain the infrastructure that powers our ML solutions—managing data pipelines, streamlining model deployment, and optimizing compute...