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$ cat experience.md

Experience

Apr 2022 → now · Moscow · Remote

Bolshaya Troyka

Python Developer

Backend services on Python/Django, REST API design, modular architecture, ownership of a large legacy system.

  • 30–60% test speedup, coverage raised to 90+
  • PostgreSQL tuning: 3–20x query speedup
  • OpenSearch and Manticore Search integration
  • Tech-debt reduction, looser module coupling, fewer regressions
  • CI/CD: GitLab CI setup, deploy automation via Ansible
  • Production ownership: releases, monitoring, hotfixes
GitLab CI Ansible Pytest PostgreSQL Redis OpenSearch Manticore Search Django Docker Linux Git Python Celery RabbitMQ
Sep 2020 → Apr 2022 · Remote

DataArt

Middle+ Python Developer

Backend services and REST APIs for enterprise projects.

  • ORM and SQL query tuning (Django ORM / SQLAlchemy)
  • PostgreSQL tuning: indexes, performance analysis
  • Integrations with external and internal services
  • Monitoring: metrics, dashboards and alerts in Grafana
Jenkins PostgreSQL Django SQLAlchemy Docker Git Python Grafana
Jul 2014 → Sep 2021 · Krasnodar

MegaFon

Billing Platform Engineer

Development and ownership of a highload telecom billing platform. Core billing, rating, production-critical migrations with zero downtime.

  • In-house billing regression testing framework — 50x+ faster tariff rollout, adopted as the internal standard
  • PostgreSQL and Oracle tuning: bottleneck analysis, SQL rewrite
  • Backend services and automation tools on Python/Django
  • Async processing: Celery, Redis, RabbitMQ
  • CI/CD: deploy automation in Kubernetes/Helm
  • Architecture: design contributions, code review
PostgreSQL Redis Oracle PL/SQL Django Docker Kubernetes Helm Linux Git Python Grafana ELK Stack Sentry Celery RabbitMQ
Oct 2009 → Jul 2014

Early career (2009–2014)

System Administrator / Billing Systems Engineer

Billing system support and development: rating, calculations, Java tooling.

  • Highload telecom billing system
  • Rating and financial calculation logic support
  • In-house Java tooling for tariff testing
  • 10x+ faster product rollout
  • Server and network infrastructure administration
Oracle PL/SQL Linux Java