Senior Python Backend Engineer – Data / GCP

• Design, implement and maintainApache Airflow DAGs
• Manage and optimizeGoogle Cloud Composerenvironments
• Develop Python backend services andREST APIs
• UsePydanticfor schema modelling, validation and type enforcement
• Build integrations between pipelines and backend services through APIs
• Handle authentication, retries, idempotency and standardized response models
• Develop reusable Airflow operators, hooks and utilities
• Work withBigQuery, GCS, Pub/Sub, IAM and Cloud Functions
• Implement logging, monitoring, alerting and testing
• Troubleshoot production issues and perform root-cause analysis
• Collaborate with Data Engineering, Platform and Product teams

Our requirements

• Hands-on Apache Airflow + Google Cloud Composer experience
• Hands-onPydanticexperience
• Airflow: DAGs, operators, sensors, hooks and XComs
• GCP: BigQuery, GCS, Pub/Sub, IAM and Cloud Functions
• OAuth2, JWT and API-key authentication

Optional

• GraphQL
• Development of reusable Airflow components/frameworks
• Strong production troubleshooting and observability experience
• At Square One Poland we link IT experts with the business. With over 25 years of experience, we specialize in recruitment processes on a global scale. Despite years of experience, we still have a startup DNA and this is our advantage. Our offices are located in London and Warsaw, however, we can reach clients from all over the world, from start-ups to big worldwide corporations.

Senior Python Backend Engineer – Data / GCP, Warszawa