Open to work

Denis Golikov

Python Developer (Backend / Data Engineer)

PythonSQLPostgreSQLDjango/DRFAirflowDockerCelery

Kazan, RussiaExperience: 2 years 4 monthsExpected: $2,000–2,400 / month (net)Open to relocating to Moscow

Python/SQL developer with 2 years 4 months of commercial experience. I build Django/DRF backends and Airflow data pipelines, optimize SQL, and automate reporting.

Download CV (PDF) Resumes ↓

drakonniravgol@gmail.com +7 919 0391379 @D4eNst hh.ru

Experience

Python Backend Developer (automation & reporting)

May 2025 — present

RTK — Digital Document Management (Rostelecom group, government contract)

Backend logic and automation in Python
Airflow pipelines for regular data processing
PostgreSQL and MS SQL; optimized heavy raw SQL queries (30–70% faster)
Migrated and adapted SQL logic from MS SQL to PostgreSQL
Reporting subsystem built with Data Vault 2.0
Automated report preparation in Airflow, reducing manual work by 40–60%
Advanced SQL — CTEs, window functions, aggregations, temp tables; reverse-engineering legacy code

PythonAirflowPostgreSQLMS SQLSQLData VaultETLGit

Backend Developer

March 2024 — May 2025

Production Reserves LLC (Kazan)

Backend for a mobile app — API, DB, integrations with external services
REST API on Django REST Framework for internal and external services
SQL and DB optimization (PostgreSQL, Django ORM, SQLAlchemy) — average API response time −30%
CI/CD on GitLab CI — manual deploy time cut by more than 2×
Deferred/periodic tasks on Celery + RabbitMQ
Containerization (Docker, docker-compose), logging & monitoring (ELK, Prometheus, Grafana)
Auto API docs via drf-spectacular; unit and integration tests