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tokgozkerem/README.md

Hi there, I'm Kerem! 👋

Backend-leaning software engineer focused on Python and data-driven systems.

  • Building RESTful services with Django / Flask and SQL
  • Interested in reliability, performance, and clean system design
  • Based in Warsaw, Poland

Projects

  • Donut Clicker — production web app with 46,000+ users
    Persistent state, versioned saves + migrations, performance optimizations, Cloudflare deployment
    Live: https://donutclicker.net

  • TicketStorm API — High-concurrency ticketing engine focused on data integrity
    Prevents double-booking via PostgreSQL Row-Level Locking and atomic transactions; manages background tasks (notifications/expiration) with Celery and Redis.
    TicketStorm Repo

  • ShopApp — Django e-commerce (backend-focused)
    Auth, cart logic, normalized data models, ORM query optimization
    ShopApp Repo

  • UCL Draw Simulator — Champions League draw rules simulation (JS)
    235,000+ views
    UCL Draw Simulator Repo

Tech I use

Python, SQL, Django, Flask, JavaScript, Git, GitHub Actions, Docker (basic), Cloudflare

What I'm looking for

Junior/early-career roles in Backend (Python), SDET (Python), or QA Automation.

Links

Pinned Loading

  1. ucl_draw_simulator ucl_draw_simulator Public

    ⚽ Champions League draw simulator [CLICK LINK BELOW]

    JavaScript 8 3

  2. donut-clicker-game donut-clicker-game Public

    Donut Clicker Game

    JavaScript 3 1

  3. expenseTracker-tkinter-matplotlib expenseTracker-tkinter-matplotlib Public

    Expense Tracker App is a simple Python application built with Tkinter for tracking expenses and visualizing their distribution using Matplotlib.

    Python

  4. weather-app-flask weather-app-flask Public

    This project is a simple web application built with Flask, a Python web framework, to retrieve and display weather information for a given city. It utilizes the OpenWeatherMap API to fetch current …

    HTML

  5. movie movie Public

    HTML

  6. TicketStorm-API TicketStorm-API Public

    High-concurrency event ticketing backend (Django + PostgreSQL) showcasing row-level locking, idempotent checkout, TTL-based reservations, and Celery background jobs.

    Python