Supported and developed Telegram AI products and REST APIs ● Fixed the problem of missing data in websockets ● Started a project to develop a product based on Jira API from scratch ● Redesigned data storage system - added caching, which increased query speed by 4(!) times. ● Configured notification sheduling with AI-recommendations ● Wrote CI/CD pipelines from scratch

Consulting, project activities ● Migrated mobile application backend from Node.js to Django, Django REST Framework ● Redesigned data storage system from scratch - added indexing, caching ● Implemented S3 for working with media files, which increased the speed of the backend by 5(!) times. ● Covered 70% of the code with unit-tests, which increased fault tolerance

Backend development for a new reporting system (Flask + Oracle). ● Wrote backebd for the reporting system from scratch. ● Updated 30% of the legacy code. ● Implemented new Flask documentation template, Swagger UI for API.