Ruslan

Kriachko Ruslan
Python Backend Developer
Telegram: @ruslankriachko - preferred method of communication
Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
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TECHNOLOGY STACK
●​ Python (OOP)
●​ DRF, Django
●​ REST API
●​ SQL (PostgreSQL, MySQL, SQLite)
●​ Docker
●​ Git
●​ AI / LLM
●​ aiogram
●​ English

WORK EXPERIENCE
Python Backend Developer – A Company That Sells Everything (ACTSE)
December 2024 – February 2026

Worked on a platform for buying, selling, and leasing commercial real estate. Specifically focused
on backend development of the web application.

●​ Developed API endpoints for scheduling property viewings, including validation of broker
availability and prevention of overlapping bookings.
●​ Implemented advanced filtering for real estate objects based on domain-specific
parameters (e.g., ceiling height, column spacing, crane availability, power capacity).
●​ Designed and implemented role-based access control (RBAC) middleware using JWT
scopes, ensuring brokers could access only their own deals while admins had full data
visibility.
●​ Contributed to the development of a data enrichment feature: integrated external APIs
(Google Maps) to fetch nearby infrastructure (e.g., metro stations, parking) and cached
results to improve performance.
 ●​ Built a webhook notification system to notify leads about property status and price
changes using background task processing (Celery).
●​ Assisted in implementing rate limiting for search endpoints to prevent scraping and
abuse, using request tracking by API keys and IP addresses.
●​ Collaborated with frontend developers, participated in code reviews, sprint planning,
documentation maintenance, and client demos.

Tech stack: Python, Django, Django REST Framework, PostgreSQL, Celery, JWT Authentication

ABOUT ME
Hello! I’m looking for a Python developer position. Challenges and hard work don’t scare me.
I’d be happy to connect)