



FastAPI Shipping Service | Shippo API Integration
FastAPI Shipping Service is a backend system that simulates real-world shipping operations using the Shippo API. It demonstrates how modern e-commerce platforms handle logistics workflows such as shipment creation, rate generation, label purchasing, and tracking.
Problem
Shipping logic in e-commerce systems is often complex and hidden behind third-party services. Understanding how to manage addresses, parcels, shipments, transactions, and tracking through APIs requires structured backend design and integration experience.
Solution
I built a modular FastAPI backend that integrates with Shippo and replicates the full shipping workflow:
- Address Handling: Create and validate sender/receiver addresses.
- Parcel Creation: Define package dimensions and weight.
- Shipment Creation: Generate shipping rates from multiple carriers.
- Transaction (Label Purchase): Select a rate and purchase a shipping label.
- Tracking Integration: Retrieve shipment tracking details.
- Webhook Handling: Receive and process real-time shipping events.
Workflow
Address → Parcel → Shipment → Rate → Transaction → Tracking
API Demo (Swagger)
The entire system is testable through an interactive Swagger UI, allowing step-by-step execution of the shipping workflow.
Architecture
- API Layer: Versioned routes with FastAPI ( / api / v1).
- Service Layer: Business logic separated from routes.
- Core Layer: Configuration, logging, and Shippo client abstraction.
- Schema Layer: Pydantic models for request/response validation.
Impact
- Demonstrates end-to-end shipping workflow simulation.
- Showcases real-world API integration with external logistics services.
- Highlights clean backend architecture and modular design.
- Provides a testable API environment using Swagger.
Complexity: External API Integration
The main challenge was designing a clean abstraction over the Shippo API while maintaining flexibility and readability:
- Problem: Direct integration can tightly couple business logic with external API responses.
- Approach: Introduced a service layer and client abstraction to isolate Shippo interactions.
- Outcome: A scalable and maintainable architecture that can easily adapt to other shipping providers.
Deliverables
- Fully functional FastAPI backend with Shippo integration.
- Documented API with Swagger UI.
- Structured project architecture for scalability.
Key Takeaways
This project demonstrates strong backend engineering fundamentals, including API design, third-party integration, and workflow modeling for real-world logistics systems.
Call to Action
If you need a scalable backend for shipping, logistics, or API integrations, feel free to connect with me on LinkedIn.




FastAPI Shipping Service | Shippo API Integration
FastAPI Shipping Service is a backend system that simulates real-world shipping operations using the Shippo API. It demonstrates how modern e-commerce platforms handle logistics workflows such as shipment creation, rate generation, label purchasing, and tracking.
Problem
Shipping logic in e-commerce systems is often complex and hidden behind third-party services. Understanding how to manage addresses, parcels, shipments, transactions, and tracking through APIs requires structured backend design and integration experience.
Solution
I built a modular FastAPI backend that integrates with Shippo and replicates the full shipping workflow:
- Address Handling: Create and validate sender/receiver addresses.
- Parcel Creation: Define package dimensions and weight.
- Shipment Creation: Generate shipping rates from multiple carriers.
- Transaction (Label Purchase): Select a rate and purchase a shipping label.
- Tracking Integration: Retrieve shipment tracking details.
- Webhook Handling: Receive and process real-time shipping events.
Workflow
Address → Parcel → Shipment → Rate → Transaction → Tracking
API Demo (Swagger)
The entire system is testable through an interactive Swagger UI, allowing step-by-step execution of the shipping workflow.
Architecture
- API Layer: Versioned routes with FastAPI ( / api / v1).
- Service Layer: Business logic separated from routes.
- Core Layer: Configuration, logging, and Shippo client abstraction.
- Schema Layer: Pydantic models for request/response validation.
Impact
- Demonstrates end-to-end shipping workflow simulation.
- Showcases real-world API integration with external logistics services.
- Highlights clean backend architecture and modular design.
- Provides a testable API environment using Swagger.
Complexity: External API Integration
The main challenge was designing a clean abstraction over the Shippo API while maintaining flexibility and readability:
- Problem: Direct integration can tightly couple business logic with external API responses.
- Approach: Introduced a service layer and client abstraction to isolate Shippo interactions.
- Outcome: A scalable and maintainable architecture that can easily adapt to other shipping providers.
Deliverables
- Fully functional FastAPI backend with Shippo integration.
- Documented API with Swagger UI.
- Structured project architecture for scalability.
Key Takeaways
This project demonstrates strong backend engineering fundamentals, including API design, third-party integration, and workflow modeling for real-world logistics systems.
Call to Action
If you need a scalable backend for shipping, logistics, or API integrations, feel free to connect with me on LinkedIn.




























