Overview As a Senior I Engineer at Back Market, you will help modernize a traditionally monolithic stack into distributed services, owning critical backend components. You will work across squads to deliver scalable, high-quality features in an agile, build-it-and-run-it environment. You’ll explore impactful technologies, mentor peers, and help mitigate chaos in complex systems. This role offers the chance to shape a mission-driven product at scale with cross-functional collaboration and integral impact. Compensaciones / Beneficios * Hybrid work environment * 2 remote days a week and 1 remote work week per quarter * 3 flex days * Employee Resource Groups * mentorship programs * comprehensive accessibility policies Responsabilidades * Contribute to architecture design and improvements for quarter-focused projects and mission-critical areas * Develop and maintain backend services in a microservices/distributed architecture * Drive performance optimization, scalability,



and reliable data handling * Collaborate across squads to ensure aligned technical direction and release planning * Participate in chaos mitigation and risk assessment for complex systems * Explore and prototype technologies with potential impact for the team * Support end-to-end product delivery with strong ownership and peer learning Requisitos principales * 5+ years backend development experience * Strong system design skills * Experience with microservices and distributed systems * Deep understanding of data architecture and APIs * Experience with performance optimization and scalability * Solid frontend capabilities with modern JavaScript frameworks (experience gap tolerated when focusing on backend) * End-to-end product thinking and ability to navigate ambiguity across technical domains * Excellent collaboration and communication skills * English proficiency for an international team * strong ownership * team player * clear communication * Python * FastAPI * SQLAlchemy

📌 Experienced Software Engineer-Backend Major (Barcelona)
🏢 Back Market
📍 Barcelona