We are looking for a Senior Python Backend Engineer to increase the bandwidth on key backend and data-related projects as we modernize our platform within a fast-growing Fintech environment.
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This role is highly impactful: you will contribute evolving existing Python applications, help migrate legacy SQL Server processes to a modern Databricks-based architecture, and contribute to cloud-native solutions running in Azure.
You will work closely with technical leadership and have strong influence over architectural decisions and best practices.
Role DescriptionThis is a full-time hybrid role located in the Greater Madrid Metropolitan Area, with work-from-home flexibility.
As a Senior Python Backend Engineer, you will:
- Own and evolve existing Python backend services and data processes.
- Design and implement REST APIs using modern Python frameworks.
- Work extensively with Python’s scientific libraries for data processing and business logic.
- Contribute to the migration of SQL Server–based processes to Databricks (PySpark).
- Design scalable, containerized applications deployed in Azure.
- Collaborate with data engineers, frontend developers, and business stakeholders.
- Ensure high standards in code quality, testing, CI/CD, and software architecture.
- Participate in the definition of technical improvements across backend and data systems.
Required Qualifications
- Higher education in Computer Science, Engineering, or a related field.
- 5+ years of experience as a backend or software engineer.
- Strong expertise in Python for backend and data-heavy applications.
- Solid hands-on experience with:
- pandas for data manipulation and transformation
- REST frameworks such as FastAPI or Django
- SQL (strong understanding of relational databases, ideally SQL Server / MSSQL)
- Experience working in cloud
📌 Senior Python Backend Engineer (Madrid)
🏢 LumRisk
📍 Madrid
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