Empleos de senior backend engineer python en Barcelona

VISEO IBERIA busca ampliar su equipo de Backend & Java y progresar en proyectos internacionales. Se desarrollará en Java (v.21) y Node.Js con Nest.Js, en entornos multinacionales y con un equipo de expertos en tecnologías de vanguardia.El rol incluye trabajar con AWS (Lambda, SQS, S3, ECS), participar en CI/CD y aplicar la arquitectura hexagonal, con...

Clidrive busca un Senior AI Software Engineer para construir Orion, el asistente personal por WhatsApp destinado a comprar y vender coches. Integrarás un runtime en Python con arquitectura hexagonal, PostgreSQL y almacenamiento vectorial. El foco es backend, fiabilidad y seguridad, con énfasis en memorización contextual y gestión de reglas de negocio. Se...

Neo4j is seeking a Senior Software Engineer to shape the core analytics of GraphAware Hume, our graph-powered analytics platform. You will build secure, scalable backend APIs and collaborate with a global team. The ideal candidate has 8+ years of backend experience, fluency in Java, and expertise in Spring, DDD, and TDD. Familiarity with Docker, CI/CD,...

Concentric Recruitment partners with a client building next-generation AI-driven voice solutions. We seek a Senior/Principal Software Engineer to own features end-to-end on a TypeScript/Python stack in a hybrid Barcelona environment. You will build scalable APIs for real-time voice interactions, integrate LLM workflows, STT/TTS, and work closely with...

QUE OFERIM? Contracte indefinit. Phantom share plan We are deploying our app to 10 million TVs in the USA as a native art gallery and screensaver, and we are looking for experienced and motivated developers to join our team and take on this challenge. (For context, Movistar+ has only 3.5 million screens.) MAIN RESPONSIBILITIES Development of the new...

Talantir busca un backend engineer senior para diseñar y construir sistemas agenticos en producción, integrando LLMs y API robustas. El rol requiere pensamiento orientado a producto, autonomía y capacidad de diseñar arquitecturas escalables y fiables. El candidato participará en todo el ciclo: desarrollo, despliegue y monitorización, con colaboración...

As a Senior Software Engineer, you will play a key role in designing and building the next generation of our Contacts Platform. You will work in a dynamic, collaborative environment to develop scalable distributed systems. Your contributions will directly impact the efficiency, performance, and safety of conversations at scaleDesign, develop, and maintain...

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,...

Naphora Games Group is seeking a Senior Backend Engineer to design, build, operate, and scale robust backend systems and platforms. This fully remote role welcomes candidates from anywhere, aligned with the Saudi Arabia schedule (Sun–Thu, 9:00–17:00 KSA time). You’ll work across APIs, databases, and AI integrations, partnering with product, BI, and...

Copyright Clearance Center (CCC) seeks a Senior Software Engineer to join our global team delivering enterprise software for pharma and publishing. You will collaborate with cross-functional engineering, participate in analysis, design, development, testing and documentation, and help shape scalable, secure systems. Work includes building back-end services...

Flexcompute is a fast-growing startup redefining engineering simulation with ultra-fast computing and scalable backend platforms. We seek a Backend Software Engineer to design and implement scalable solutions for an advanced EM simulation stack. You will collaborate with EM and infrastructure teams, improve web APIs, and build hybrid cloud compute/storage...

Flexcompute is leading the transformation of engineering simulation with our revolutionary ultra-fast simulation technology. Our flagship products, including the industry-leading Computational Fluid Dynamics (CFD) software Flow360 and electromagnetic simulation software Tidy3D, are reshaping how simulations are conducted across diverse sectors. Founded by...

At Fourthline, our mission is to fight financial crime. We help protect the global financial system by verifying millions of identities for banks, neobanks, online brokers, crypto exchanges, and insurers like N26, Trade Republic, flatexDEGIRO, Nationale Nederlanden, Qonto, Shine, Solarisbank, and more. Prevent financial crime by building best-in-class...

Parser is seeking an experienced Senior Data Engineer to join a client delivery team powering an E-commerce search and product discovery platform for a multinational retailer. You will help build the data foundation and data pipelines across multiple regions, enabling fast, accurate search and offline evaluation. You will work with Azure, Kafka,...

AgileEngine, LLC.is seeking a Python Backend Developer to build and extend the backend of an internal developer portal and dashboard, using AI coding tools daily.The role requires strong Python backend skills (4+ years) with experience in FastAPI/Django/Flask, plus DB integration (Snowflake, PostgreSQL, MySQL, MongoDB) and REST API design.Nice-to-have skills...

You will take ownership of a backend system that is critical to the company and our customers.You will have the opportunity to help define our roadmap and find the best technical solutions.You will also have time to run some experiments and bring new ideas to the table.Your responsibilities: ? Hands-on code implementation, code reviews, testing ? Ensure...

Festo, a global leader in industrial automation, is seeking a Senior Backend Developer to join the IT Digital Marketing team in Barcelona. You will design and build backend services, APIs, databases, and integrations supporting our digital marketing and sales capabilities. As a senior member of an international Agile team, you will own backend solutions,...

You will take ownership of a backend system that is critical to the company and our customers. Hands-on code implementation, code reviews, testing Ensure reliability, performance and correctness. Improve code quality and internal structure where possible. 5 years plus experience building and maintaining production systems as backend engineer ~ Strong...

Tappx is hiring a Senior Java Backend Developer to join the Performance Tech team in our IT department. The role focuses on coding, debugging, and maintaining high-quality backend services in Java, with a hybrid/remote setup across Spain. You will work across the application lifecycle, gather requirements, and collaborate with data and product teams to...

Oliver Bernard is seeking an experienced backend engineer to design and ship end-to-end backend systems and APIs for a rapid-scaling fintech startup. You will own architecture, CI/CD, testing and monitoring across real-time accounting logic, with daily deployments and high autonomy.Candidates should have 5+ years in backend roles, deep knowledge of complex...