Denis

Python Developer, 80 000 UAH

Employment type:
full-time, part-time
Age:
33 years
City of residence:
Zaporizhzhia
Ready to work:
Remote, Zaporizhzhia

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Work experience

Backend програміст

from 10.2020 to 04.2026 (5 years 7 months)
EOS Data analytics, Дистанційно (IT)

Responsibilities:
• Accelerated critical product endpoints by up to 10x through backend and SQL optimization
• Led initiatives related to AI feature integration into the product
• Reduced execution time of heavy SQL queries by 3x and lowered database CPU usage
• Regularly proposed and implemented product improvement ideas
• Conducted code reviews and supervised development of an internal sub-product
• Participated in migration of analytical logic from R to Python
• Reduced memory usage by redesigning file generation logic
• Fixed memory leak issues related to GDAL processing pipelines

Technologies: Python, FastAPI, Django REST, Event driven architecture, Asyncio, Kafka, RabbitMQ, Redis, PostgreSQL PostGIS, Docker Compose, Grafana, Zabbix, Airflow, Clickhouse, Numba, GDAL

Backend developer

from 08.2019 to 08.2020 (1 year)
Computools, Запоріжжя (IT)

Responsibilities:
• Led development direction for a Video Chat Platform supporting real-time communication
• Optimized CPU utilization for video chat workloads and real-time processing
• Migrated a custom binary TCP protocol (gRPC-like) from Java to Python
• Developed desktop application functionality using C++ and Qt
• Implemented and maintained backend logic in Ruby on Rails projects
• Participated in architecture and performance improvement initiatives

Technologies: Python, Django REST, Redis, PostgreSQL, Janus WebRTC, C++, Qt, Ruby on Rails, Golang, Gin, Gorm

Python/Django/Flask Developer

from 08.2016 to 08.2019 (3 years)
Incode Group, Запоріжжя (IT)

Responsibilities:
• Designed architecture and developed a Game Stats Aggregator platform
• Optimized latency and performance for real-time game statistics aggregation
• Built data pipelines for aggregation and processing of gaming statistics
• Fixed memory leak issues related to long-lived service connections
• Developed backend services for rider-style mobile applications
• Implemented authentication and authorization logic using JWT
• Led backend initiatives, architectural improvements, and client communication

Technologies: Python, Django REST, Sanic, Asyncio, Flask, Peewee async, Scrapy, Selenium WebDriver, SQLAlchemy, Redis, PostgreSQL, MongoDB, Scala, Akka, Slick, Cassandra

Education

Запорожский национальный технический университет

Програмное обеспечение, Запорожье
Higher, from 2010 to 2016 (6 years)

Диплом магистра с отличием

Knowledge and skills

  • Python
  • C++
  • Java
  • Scala
  • Django
  • Flask

Language proficiencies

English — above average

Additional information

Backend engineer with 10+ years of experience in Python-based web development for startups, mid-sized companies, and enterprises. Strong understanding of backend architecture, scalable systems, web infrastructure, and performance optimization. Experienced with Django, Asyncio, PostgreSQL, and high-load backend development. Hands-on experience integrating AI features into products and leading AI-related initiatives. Master’s Degree in Computer Science (with Honors).

Fast learner, open to innovation, and focused on using cutting-edge technologies to solve engineering problems.
Open to backend development opportunities using Python or Go.

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