Python Developer Serafim Cargo
Worked on the development and long-term support of internal backend systems used to automate transportation and logistics operations. Developed backend using Python, Django, and Django REST Framework. Designed, implemented, and maintained RESTful APIs for managing trips, vehicles, drivers, expenses, and logistics documents. Modeled data and developed databases with PostgreSQL. Implemented business logic for cost calculation, trip profitability, and period-based analytics. Generated analytical reports and exported data to CSV and Excel. Developed and maintained background tasks using Celery and Redis. Handled storage and processing of logistics documents. Optimized database queries and API performance. Fixed bugs, refactored code, and improved system stability. Collaborated closely with logistics managers to translate business requirements into technical solutions.