Empleos de backend python en Barcelona

We're looking for a skilled Mid-Level Data Engineer for one of our clients (TOP Startup) to design, build, and optimize data pipelines and backend services that ensure clean, reliable data across the organization. Design, develop, and maintain scalable ETL/ELT pipelines to ingest, transform, and load data from multiple sources. Write clean, efficient Python...

We are looking for a Python Developer with strong experience in Python and Flask to help build scalable backend systems.Habilidades, experiencia, cualificaciones... Si tiene el perfil adecuado para esta oportunidad, asegúrese de inscribirse hoy mismo.Our client is a global leader in legal research technology, providing access to one of the most...

Indra Group busca un Python Backend Developer para diseñar y mantener servicios backend de alta prestación en entornos de ciberseguridad. Trabajarás con Python y frameworks como FastAPI, Flask o Django, desarrollando APIs robustas y escalables.Participarás en integración continua, pruebas y despliegues automatizados, usando ORM y gestión de bases de...

En Indra Group, protegemos lo que más importa. Desarrollamos soluciones tecnológicas avanzadas que refuerzan la seguridad nacional e internacional, participando en proyectos estratégicos europeos de alto impacto.ð» Únete a nuestro equipo de desarrollo backendQueremos reforzar nuestro equipo con un/a Backend Python Senior que lidere el diseño y...

Constructor.io is a distributed team hiring a backend-focused engineer for its Experiments platform. You’ll build Python services and data-heavy pipelines, with opportunities to contribute to the Dash UI and Spark/Databricks work, while prioritizing correctness and observability.You’ll own backend components for experiment assignment, logging, and...

Job Description Job Title: Python Developer Job Type: Contract Location: Remote Job Summary In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what...

Senior Backend Engineer (Python)ð Barcelona (Madrid) | Modelo híbridoIndra Group, Tech for the futureEn Indra Group lideramos el desarrollo de soluciones tecnológicas punteras que impulsan la transformación digital en entornos complejos y de alto impacto. Trabajamos con arquitecturas modernas, sistemas escalables y equipos multidisciplinares en proyectos...

OverviewIn this Backend Python Engineer role, you will build robust, scalable APIs and services powering Roche Diagnostics Solutions' digital products. You'll work closely with frontend and data science teams to design backend infrastructure for complex bioinformatics and ML data, and you'll scale cloud-native solutions on AWS. Your contributions will...

Desarrollamos soluciones tecnológicas avanzadas que refuerzan la seguridad nacional e internacional, participando en proyectos estratégicos europeos de alto impacto.ð» Únete a nuestro equipo de desarrollo backendQueremos reforzar nuestro equipo con un/a Backend Python Senior que lidere el diseño y evolución de arquitecturas backend robustas, seguras y...

Job Description:King operates games at a massive scale, serving hundreds of millions of players around the world. Behind every player experience is a large ecosystem of services, data platforms, forecasting systems, and internal tools that help our teams make better decisions, move faster, and deliver exceptional experiences.Obtenga más información sobre...

¿Te interesaría liderar la arquitectura y la infraestructura crítica de backend en un entorno de alto volumen?Desde Oxigent Technologies seleccionamos un/a Senior Python Engineer para sumarse al equipo de Code Foundations en Barcelona.El equipo de Code Foundations es el núcleo del ecosistema de backend: desarrollan y mantienen la infraestructura...

Cala is looking for a Backend Engineer with 4+ years of experience to build the systems behind AI-driven information verification at scaleThe team behind Vilynx, a Barcelona AI startup that Apple acquired, founded Cala. They’re building a verified knowledge graph for AI agents, and they’re looking for someone who is strong in backend work (Python, APIs,...

En ALTEN España estamos buscando un/a Analista Programador con experiencia en desarrollo backend con Python y conocimientos en frontend con Angular/vue/React/Next.js para incorporarse a un proyecto innovador orientado a la evolución de plataformas digitales y herramientas operativas escalables.Buscamos una persona con orientación técnica, pasión por el...

Build the infrastructure that moves money. Ledgers, payment integrations, and APIs that power fintech businesses.About the roleWe're building the platform that lets anyone launch a fintech business. That means reliable ledgers, integrations with stablecoin infrastructure (USDC, Bridge), and APIs developers love to use.What you'll do- Design and build backend...

Job Description Job Title: Python Developer Job Type: Contract Location: Remote Job Summary In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what...

En ALTEN España estamos buscando un/a Analista Programador con experiencia en desarrollo backend con Python y conocimientos en frontend con Angular/vue/React/Next.js para incorporarse a un proyecto innovador orientado a la evolución de plataformas digitales y herramientas operativas escalables.Buscamos una persona con orientación técnica, pasión por el...

Job Description:King operates games at a massive scale, serving hundreds of millions of players around the world. Behind every player experience is a large ecosystem of services, data platforms, forecasting systems, and internal tools that help our teams make better decisions, move faster, and deliver exceptional experiences.Craft:Technology & DevelopmentJob...

We're looking for a motivated Backend Developer to join our UGC Platform Team in Barcelona. Flowbox was founded in 2016 and is a fast-growing tech scale-up with large ambitions and broad visions. We provide a SaaS platform that helps brands improve their marketing, social media and e-commerce strategies. Our technology helps our clients to better collect,...

Tus tareasServicios TIC e Ingeniería para la gestión empresarial.Trabajamos diseñando soluciones a medida de las necesidades de nuestros clientes.Somos una empresa 2.0 innovadora donde las personas son muy importantes para nosotros.La ética, transparencia, imparcialidad e independencia forman parte de nuestra filosofía.Tu perfilESTAMOS EN LA BÚQUEDA DE...

Overview As a Backend Engineer at Octopus Energy, you contribute to high-impact MVPs that empower millions of customers and internal teams. You work across international, cross-functional teams to identify real business needs and translate them into fast, practical tech solutions. You will develop parts of our private area, billing, onboarding flows, and...