# Kira — Backend Python Developer > Backend developer with 5+ years of experience building high-load systems in Python, FastAPI, PostgreSQL, and Redis. Specialized in e-commerce, logistics, Telegram bots, REST APIs and self-hosted infrastructure. ## Pages - [Home](https://ddkira.ru/): portfolio and experience - [Blog](https://ddkira.ru/blog): backend engineering notes - [Tools](https://ddkira.ru/tools): client-side hash, cipher, HMAC, UUID, base64 tools - [Tools: Hashes](https://ddkira.ru/tools/hash) - [Tools: Ciphers](https://ddkira.ru/tools/cipher) - [Tools: HMAC](https://ddkira.ru/tools/hmac) - [Tools: UUID](https://ddkira.ru/tools/uuid) ## Selected projects - Warehouse system with Ozon integration — 3M+ shipments, FastAPI, PostgreSQL, Redis - Telegram bot for English learning — FFmpeg, Celery, Redis, multithreading - Video hosting — Svelte 5, FastAPI, S3 transcoding pipeline - Warehouse system with X5 Group integration - Bonus System for AmoCRM — Httpx, Async, PostgreSQL - Telegram bot for Wildberries sellers — Aiogram, SQLAlchemy, Cryptography - Schedule Bot for Telegram, VK, MAX — RabbitMQ, K8S - Internal Automation for OnlineSim.io — Python, JavaScript, Node.js ## Contact - Telegram: https://t.me/kira_worker - Discord: https://discord.com/users/892096651341221888 - Email: im@ddkira.ru - GitHub: https://github.com/nikolay-mansas/mysite