Would you like to work on a global-impact digital product, with a modern tech stack and a sustainable business model? Join the backend team of one of Europe’s top marketplaces! At Oxigent Technologies, we’re hiring a Backend Engineer (Python + Golang bonus) to help evolve a large-scale digital product used by millions. You’ll be part of an international team of highly skilled professionals, actively contributing to the evolution and maintenance of the platform — specifically within the Search & Recommendation area. A technical challenge at scale, with millions of users. What will you do? * Design, develop and deploy critical new features in a “you build it, you run it” environment. * Collaborate closely with Product Managers, Designers and Engineers (frontend, backend, mobile). * Maintain high code quality through best practices, pair programming, and QA sessions. * Ensure scalability, reliability and performance of the services you own. What are we looking for? * 5+ years of experience in backend development with Python. * Good level of English (minimum high B2, ideally C1), as you’ll work with international teams. * Ability to work autonomously, share knowledge, and actively contribute to technical decisions. What tech will you work with? * Python (FastAPI, SQLAlchemy, Celery), Golang * Kafka, RabbitMQ, PostgreSQL, Redis, BigQuery * Docker, Kubernetes (GKE), Google Cloud Platform (GCP) * CI/CD with ArgoCD, CircleCI, GitHub * Monitoring with Datadog What do we offer? * Permanent contract * Competitive salary between €46,000 and €51,000 gross/year, depending on your experience * Full remote work from anywhere in Spain, with 2 days/month onsite at one of our offices (Barcelona, Bordeaux, or Paris) * Flexible working hours + summer intensive schedule * Multicultural, agile and collaborative environment * Real opportunities for professional growth in a live product with direct business impact Join the Oxigent team! A company committed to sustainability and equal opportunity, where talent and technology know no gender.