Empleos de backend engineer nodejs en Zaragoza

Alignerr Corp. is seeking Back End Developers for a fully remote hourly contract in Madrid. Design, build, and optimize server-side systems and APIs powering AI products, including data pipelines and scalable microservices that handle real-world traffic.You will work with languages like Python, Go, Java, Node.Js, or Rust, and use AWS/GCP/Azure, PostgreSQL,...

Lever, Inc. is seeking a Senior Backend Engineer for Payments & Fintech in Spain. You will rebuild and scale the financial systems at the core of a growing global platform, owning architecture for billing, subscriptions, and entitlements. You will lead migrations from legacy systems while ensuring correctness, reliability, and auditable financial records....

Software Engineer | Full Stack, AI & Product Development **Zebra | AI Transformation Company** Buscamos ingenieros que quieran construir tecnología que cambie cómo funcionan las empresas. En Zebra no hacemos software genérico. **Convertimos operaciones complejas en sistemas inteligentes que las empresas utilizan para trabajar mejor.** Entramos en...

Octopus Energy is seeking a Senior Frontend Engineer to scale our ES platform and customer onboarding flows.You will own frontend architecture end-to-end, collaborating with international teams across Europe while focusing on Type Script, React, and Next.Js.The role centers on the private area, bill management, and marketing dashboards, with a flexible move...

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is seeking a Founding Engineer based in Spain to join an early-stage AI infrastructure startup and help shape the product and engineering culture.As the first engineering hire, you will own backend, infrastructure, frontend, and agent...

Octopus Energy Spain is looking for a Software Engineer to join a small, agile team focused on quickly delivering MVPs that solve real problems for our customers and internal users.You will work across backend and frontend with Python/JavaScript, React, APIs, and SQL in a hybrid environment, collaborating with diverse teams to deliver impactful solutions and...

Grafana Labs is hiring a Senior Software (Database) Engineer to help build the underlying storage system for a general purpose data platform. You will work on a SaaS-ready database layer with OLAP/OTLP capabilities, designed to run across cloud providers, with high autonomy and cross-functional collaboration.The role emphasizes pragmatic architecture...

Parser is a boutique technology services and consulting firm helping global organisations solve complex business challenges through digital transformation, product development and AI enablement. We are 340+ engineers across Europe (UK, Spain, Portugal), the Americas, and the Middle East, delivering technology-driven outcomes with senior expertise and close...

Una empresa innovadora en España busca un Backend Engineer con más de 3 años de experiencia. El candidato participará en el desarrollo del MVP de una plataforma basada en IA y datos. Se requiere dominio de Node.Js o Python, junto con experiencia en arquitecturas de APIs REST. Ofrecemos trabajo 100% remoto, un entorno sin burocracia y un salario...

Intellia is seeking a Senior Python Backend Engineer to design and build scalable backend services for agent-to-agent communication on AWS AgentCore platforms. You will work on Python-based backends, API integration, and asynchronous event-driven patterns to enable robust multi-agent interactions.The role emphasizes API design, registration and discovery...

About WenrixWenrix is a fast-growing travel tech SaaS company which is part of eTraveli group, redefining the financial and operational backbone of the corporate and leisure travel industry. Our proven technology and AI solutions empower the global leading Online Travel Agencies and Travel Management Companies and substantially increase and improve their...

Lever, Inc. is seeking a Software Engineer, Trust & Safety, to join a fully remote team building reliable email infrastructure for millions of developers. You will design and develop anti-abuse systems that protect legitimate senders while preventing spam, phishing, fraud and account compromise.You will own technical decisions from discovery through...

The mission of Speechify is to make sure that reading is never a barrier to learning. Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products...

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Software Engineer, Trust & Safety based in Spain.Join a fully remote engineering team building reliable email infrastructure for millions of developers worldwide. As a Software Engineer specializing in Trust & Safety, you will...

Talent Search People busca un Ingeniero de Software senior con background en Laravel para liderar el desarrollo de servicios backend robustos. Se valorará experiencia con IA agentiva y principios de DDD, con un enfoque en calidad de código y arquitectura.El puesto ofrece contrato indefinido, salario competitivo y posibilidad de trabajar de forma remota...

Location: Remote from Spain (an indefinite Spanish employment contract)We are looking for a Senior Python Backend Engineer to build and integrate agent-to-agent communication capabilities on AWS AgentCore platforms. The role focuses on Python backend development, A2A protocol implementation, agent discovery and registration, event-driven communication, and...

Jobgether SRL, partnering with a leading energy platform, seeks a Staff Engineer – Pricing based in Spain. You will own the backend pricing APIs, ensure accuracy and performance, and guide architectural migrations while collaborating across teams in a remote-first environment.You will drive pricing reliability, observability, and multi-agent workflows,...

Octopus Energy is looking for a Backend Engineer to join a cross-functional team delivering high-impact MVPs for our sites and apps. You will collaborate with international teams to build scalable Python/Django services and APIs, focusing on business needs and rapid delivery.You will own modules such as private area, billing, onboarding, and dashboards,...

Do you want to work for an International Service Delivery Center in Spain as a Senior Rust Engineer?You will be part of a cross-functional agile team building a next-generation data management platform within a highly regulated environment.The system is designed using a distributed, event-driven microservices architecture, handling complex workflows,...

Portless is changing the face of global e-commerce. By decoupling brands from traditional, expensive domestic warehousing, we allow e-commerce companies to ship directly from manufacturing hubs to global consumers in as little as 3-5 days. We are growing fast, and we are looking for an elite, full-stack engineer to help us scale a world-class, globally...