Senior Backend Engineer (Python/Django) Barcelona (Hybrid) | Full-time | Fintech Up to €90,000 (plus benefits)Desplácese hacia abajo para encontrar los detalles completos de la oferta de trabajo, incluyendo la experiencia requerida y las funciones y tareas asociadas.Are you a hands-on backend engineer who loves building systems that scale?Do you enjoy owning architecture end-to-end while still writing production code every day?We’re partnering with a fast-growing, VC-backed fintech on a mission to improve people’s financial well-being. Since launching recently, they’ve already scaled to hundreds of thousands of users and processed over €1B in transactions — and they’re just getting started. The RoleThis is a Senior level, highly hands-on engineering role focused on designing, building, and scaling backend systems in a modern, event-driven environment.You’ll play a key role in shaping architecture, solving complex problems, and raising the technical bar across the team.



What You’ll Be DoingDesigning and scaling backend systems using Python/DjangoOwning architecture in a microservices + event-driven environmentWorking closely with infrastructure and security teams (AWS)Taking systems from design → production → scaleLeveraging AI tools to improve development speed and qualityMentoring engineers and contributing to engineering excellence Tech StackPython, Django, AWS, Docker, Kafka, PostgreSQL, Redis, MondoDB and Datadog What We’re Looking For10+ years of backend engineering experienceStrong expertise in Python & DjangoProven track record scaling systems in startups or scale-upsExperience with AWS and containerized environmentsDeep understanding of PostgreSQL and performance optimisationAbility to debug complex production issuesFocus on performance, reliability, xhfqzwm and cost-efficiencyStrong communication skills (English)Pragmatic, humble, and impact-driven mindset What’s On OfferCompetitive salaryHealth insurance + meal allowanceHybrid working (2 days remote/week)High-ownership, low-ego environmentA meaningful mission with real-world impact If you’re excited about building scalable systems in a fast-moving fintech and want to stay close to the code while influencing architecture, we’d love to hear from you. Apply or message me directly to learn more.

📌 Senior Software Engineer - Up To €90.000 A Year (Barcelona)
🏢 Socium - Teams Done Differently
📍 Barcelona