Aleksei Kogan

Hi. I'm Aleksei Kogan.

Python Backend Developer with 7+ years building scalable APIs using Django and FastAPI. Experienced in full development lifecycle: requirements, architecture, implementation, CI/CD automation, and testing. Skilled in database optimization (PostgreSQL, MySQL, Redis), asynchronous task processing (Celery, RabbitMQ), and containerization (Docker). Also experienced in frontend development with JavaScript and React, integrating UIs with backend APIs for high-performance apps.

Passionate about modern web technologies and system reliability. I enjoy mentoring and collaborating with teams to deliver scalable solutions.

See my experience

Work Experience

KOKOC GROUP — FullStack Developer

11/2024 — Present (2+ years)
  • Optimized MySQL queries using Django ORM by 25% (by speed)
  • Migrated file storage to S3, reducing load on the main server by 35%
  • Designed and implemented REST APIs for partner integrations, accelerating data exchange processes by 20%
  • Configured Celery and Redis for asynchronous tasks for increasing the speed of background job processing by 30%
  • Wrote automated tests (pytest), reducing production bugs by 25%

Stack: Python, Django, FastAPI, JavaScript, React, MySQL, Celery, Redis, S3, SOAP

National Research Center «Kurchatov Institute» — Middle Backend Developer

08/2021 — 11/2024 (3+ years)
  • Developed and integrated an online request and feedback form
  • Optimized backend logic and PostgreSQL queries, reducing average page load time by 20%
  • Implemented automated email notifications and reminders using Celery, reducing manual follow-ups by 50%
  • Refactored legacy Django views and optimized ORM queries, decreasing server CPU usage by 20% under peak load
  • Added caching with Redis for frequently accessed data, improving API response times by 40%

Stack: Python, Django, PostgreSQL, Celery, pytest

BMSTU — Junior Backend Developer

09/2019 — 08/2021 (2 years)
  • Developed backend modules for Django web applications, including user authentication and form handling
  • Assisted in building REST APIs for internal tools, implementing endpoints for data submission and retrieval, reducing manual
    tasks by ~10–15%
  • Wrote scripts for data processing and report generation, automating repetitive tasks and saving several hours weekly
  • Participated in debugging and fixing issues in existing systems, including database queries and form validation, contributing to
    ~10% reduction in minor bugs

Stack: Python, Django, DRF, PostgreSQL, Git, REST APIs, Linux (basic), Docker (basic)

My Stack

Main

Python | JavaScript
Django | DRF | NGINX
FastAPI

Databases

MySQL
Redis
PostgreSQL
SQLite

Message Brokers

Celery
RabbitMQ
Kafka

Documentation

Swagger
reDoc

Containerization

Docker
Docker Compose

Code Versioning

GitHub
GitLab

Testing

pytest
Jest
unittest
coverage

Also familiar with

gRPC • AWS • SOAP • GraphQL • Stripe

Personal Projects

SweetHome

SweetHome

E-commerce furniture platform: catalog, filters, cart, delivery & payment.

Django • PostgreSQL • Celery • Redis • JavaScript • AJAX

Foodgram

Foodgram

Social recipe platform with subscriptions, favorites and shopping lists.

Django • DRF • React • PostgreSQL • JWT

Get in touch

Open to interesting Python Backend / Full-Stack (learning) opportunities