Python Developer (routing algorithms, e-commerce)

We are looking for a Senior Software Engineer specializing in Python and routing algorithms. In this role, you will support the design and scaling of high-throughput services that power first-mile and last-mile delivery logistics.

Our expectationsMin. 4 years of commercial experience in backend software development using Python and SQL.

Experience in or very good knowledge of the logistics domain, network analysis, and routing (e.g., graph theory, road network modeling, Vehicle Routing Problem – VRP).

Experience with programmatically utilized geospatial data (e.g., H3, spatial indexing, clustering algorithms, PostGIS).

Knowledge of the cloud environments (Google Cloud Platform preferred) and modern infrastructure tools (Kubernetes, Terraform, Airflow).

Promote engineering best practices, such as: Clean Code, TDD (Test Driven Development), CI/CD, rigorous code review.

Ability to design and scale microservices-based architecture.

Positive attitude, strong teamwork skills, and hold a university degree in computer science or a related technical field.

Good command of English and Polish.

Readiness to participate in workshops at the client's office in Warsaw once per month.

Key tasks

Supporting the design and scaling of high-throughput services powering first-mile and last-mile delivery logistics operations.

Co-developing Allegro's next-generation Delivery Optimization Engine (DOE) using network analysis and spatial optimization.

Developing and implementing routing algorithms.

Directly impacting and improving the efficiency of the company's logistics processes.