Aleksandr Sizov

Alirex

Who is behind the project and what they have built.

📄 CV (PDF, English) CV (web page, English)

👋 About

Alirex (Aleksandr Sizov): a software architect, tech lead and backend / full-stack engineer with 10+ years in IT. I build with Python, Rust and Vue, care about code quality (linters, type checkers, pre-commit hooks) and write small tools that take repeated work off my hands. I have rewritten whole projects (Python 2 to 3, PHP to Python, Python to Rust), designed architectures for startups and a cybersecurity platform, and deploy on my own servers with Docker and Proxmox. I also teach: 8 years of courses and mentoring. Currently studying for a master's degree in Software Engineering and AI at Neoversity.

🛠️ Selected work

• CryEye (opens in a new tab) ↗ Platform

  A cloud platform for continuous security auditing: penetration testing, source code, mobile and infrastructure scanning, breach detection and more.

  One of my biggest projects (2018–2025, with CQR). I developed the core of the platform, integrated and automated pentesting tools, made architecture decisions and later integrated AI-based tools.

  • Python
  • Rust
  • Vue.js

• User journey platform Platform

  A platform for configuring user journey scenarios in the finance sector.

  Built with Python: scenarios are configured, not hard-coded. A client project, so the product name and the code are not public.

  • Python

• uv_upgrade (opens in a new tab) ↗ CLI tool

  Upgrades dependency versions in the pyproject.toml files of uv projects. On PyPI as uv-upx.

  Run it in a project and it bumps the versions in every pyproject.toml, so upgrades stop being manual work.

  • Python
  • uv
  • License: MIT
  • PyPI (opens in a new tab) ↗
  • Downloads (opens in a new tab) ↗
  • CI (opens in a new tab) ↗
  • Releases (opens in a new tab) ↗

  Install: uvx uv-upx

• path_as_uri (opens in a new tab) ↗ Rust crate

  A Rust crate that turns a file path into a URI you can click in the terminal.

  Gives an absolute path as a file:// URI with the right escaping, so terminals make it clickable.

  • Rust
  • License: ISC
  • crates.io (opens in a new tab) ↗
  • docs.rs (opens in a new tab) ↗
  • CI (opens in a new tab) ↗

  Install: cargo add path_as_uri

• app_root_folder (opens in a new tab) ↗ Rust crate

  A Rust crate that finds the app's root folder, like BASE_DIR in Python projects.

  Finds the root by the executable's folder and skips cargo's target/debug, so the same code works in development and in release.

  • Rust
  • License: ISC
  • crates.io (opens in a new tab) ↗
  • docs.rs (opens in a new tab) ↗
  • CI (opens in a new tab) ↗

  Install: cargo add app_root_folder

• rust_crate_to_workspace (opens in a new tab) ↗ Script

  A Bash script that turns a single Rust crate into a Cargo workspace.

  Run it in a clean git repository: it moves the crate into a members folder and writes the workspace Cargo.toml.

  • Bash
  • Rust
  • License: MIT
  • CI (opens in a new tab) ↗
  • Releases (opens in a new tab) ↗

• pre-commit-just (opens in a new tab) ↗ Git hook

  A pre-commit hook that formats justfiles with just --fmt (my fork, with my own changes).

  Runs on every justfile and *.just module, fixes them in place and fails on a file just cannot parse; works with pre-commit and prek.

  • Bash
  • just
  • prek
  • License: ISC
  • CI (opens in a new tab) ↗
  • Releases (opens in a new tab) ↗

💼 Experience

• 10+ years in IT as a software architect and backend / full-stack engineer.
• 8 years of teaching programming: courses and mentoring.
• Cybersecurity: solutions for the CryEye / CQR security platforms.

🧰 Skills

🎤 Talks

• How to improve the code quality and predictability of your Python application. Synergy with AI (opens in a new tab) ↗ : A webinar at Hillel IT School (2024, in Ukrainian).
• “How to teach grandma to program” : A talk at PyDay Odessa.

🗣️ Languages

Ukrainian · Russian · English

🏊‍♂️🚴‍♂️🏃‍♂️ Interests

Amateur triathlon: swimming, cycling and running, for comprehensive health support.

✉️ Contact

Write to me on LinkedIn. Questions about a project: open an issue in its repository. More work and profiles:

• CV (web page, English)
• CV (PDF, English)
• GitHub: Alirex (opens in a new tab) ↗
• GitHub: evocaslab (opens in a new tab) ↗
• LinkedIn (opens in a new tab) ↗
• crates.io (opens in a new tab) ↗
• PyPI (uv-upx) (opens in a new tab) ↗