Backend (Java) Technical Leader - A Year (Barcelona) - Up To €90.000 A Year

Senior Backend Engineer (Python/Django)Para una comprensión completa de esta oportunidad y de lo que se requerirá para ser un candidato exitoso, siga leyendo.
Barcelona (Hybrid) | Full-time | FintechUp to €90,000 (plus benefits)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 excellenceTech StackPythonDjangoAWSDockerKafkaPostgreSQLRedisMondoDBDatadogWhat We’re Looking For10+ years of xhfqzwm 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, and cost‑efficiencyStrong communication skills (English)Pragmatic, humble, and impact‑driven mindset