RU

Marcel Gaifulin

Backend Developer | Python | 3.5+ Years

bikmetle@proton.me @bikmetle Turkey / Remote Worldwide

Summary

Backend Developer with 3.5+ years of experience building scalable web applications and REST APIs. Specialized in the Python ecosystem (FastAPI, Django) with hands-on experience integrating AI/LLM solutions (OpenAI), designing database architectures, and implementing DevOps practices.
Available for Remote | Full-time or Contract

Technical Skills

Languages
Python SQL
Frameworks
FastAPI Django Django REST Framework Django Ninja
Databases
PostgreSQL Redis SQLAlchemy Django ORM
AI/ML
OpenAI API LLM Integration
DevOps
Docker Linux CI/CD GitLab CI Nginx
Tools
Git Celery Pytest AWS S3

Experience

MarkDev Nov 2023 — Present
Backend Developer (Python/FastAPI)
Intercity Bus Transportation Automation Platform
  • Designed and developed REST API for a ticket booking system serving web, mobile, and third-party integrations
  • Built a multi-role admin panel with granular access control for business owners, dispatchers, and drivers
  • Optimized SQL queries and database architecture (PostgreSQL), improving response times on critical endpoints
  • Implemented asynchronous task processing (Celery + Redis) for notification queues and data caching
  • Established code reliability through comprehensive unit and integration tests (pytest)
  • Containerized services with Docker and managed deployments on Linux servers
Stack: FastAPI, PostgreSQL, SQLAlchemy, Celery, Redis, Docker, Pytest, Git
MarkDev
Backend Developer (Python/Django Ninja)
AI-Powered Call Analytics Platform
  • Integrated OpenAI API for automated call quality assessment, reducing manual review time and improving analysis objectivity
  • Developed integrations with multiple cloud PBX providers via API, expanding platform compatibility across telecom vendors
  • Built server infrastructure from scratch: Nginx, Gunicorn, SSL certificates, systemd services for Telegram bot and Celery workers
  • Automated operational processes via cron jobs: database backups, log rotation, certificate renewal
  • Created automated reporting system with email and Telegram delivery (Celery + Redis)
  • Increased test coverage for core functionality and refactored legacy code
Stack: Django Ninja, PostgreSQL, SQLAlchemy, OpenAI API, Celery, Redis, Nginx, Linux, Git
Dobrofon Sep 2022 — Feb 2024
Backend Developer (Python/Django/DRF)
Charitable Platform — Website & Mobile Application
  • Developed and maintained REST API serving both web and mobile applications for a charitable foundation
  • Optimized Django ORM queries, eliminating N+1 problems and reducing API response times
  • Utilized raw SQL for complex analytical queries where ORM was inefficient
  • Configured Amazon AWS S3 object storage for media file management
  • Implemented unit testing practices for new features
  • Collaborated in Agile team environment using Git and Docker
Stack: Django, Django REST Framework, PostgreSQL, Django ORM, Docker, AWS S3, Git

Education

Tyumen State Oil and Gas University 2015

Faculty of Industrial Technologies and Engineering — Chemical Technology

Yugra State University, Khanty-Mansiysk 2008

Installation and Maintenance of Industrial Equipment

Languages

English C1 Advanced
Russian Native
Arabic B2
Turkish B1
Indonesian B1
Tatar Native

Additional

  • Available for remote work worldwide
  • Open to relocation
  • Authorized to work in Russia