Aleksandr Galeckij

Developed backend features for a Bible learning platform that supports multiple translations, mentoring and user progress tracking. Built LangChain/LangGraph enrichment and matching pipelines and integrated OpenAI-based AI capabilities for text generation and semantic search. Implemented high-throughput messaging with RabbitMQ and background processing with Celery, optimized PostgreSQL and added OAuth2 authentication/authorization with automated tests.

Developed and maintained backend services and APIs used by mobile applications. Participated in delivering new functionality through code reviews and technical discussions, and wrote technical documentation and unit tests. Worked with a Python web stack including Django/FastAPI and relational data modeling.

Developed and maintained a car rental service in Montenegro, contributing to new features and troubleshooting across the stack. Designed PostgreSQL database structure and schemas and handled debugging at multiple layers to keep the service stable. Wrote unit tests to ensure reliable functionality.

Developed a service for posting content to multiple social networks. Designed and implemented the posting backend logic and integrated social network APIs, then maintained the service through code-level debugging. Implemented database schema design in PostgreSQL and added unit/integration tests to ensure correct behavior.

Built and supported an automobile auction backend service with an API for a mobile application. Performed debugging across application layers, designed PostgreSQL database schemas, and implemented unit tests. Focused on making the service reliable and maintainable for ongoing development.