Леонід

LISOVSKIY LEONID
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | @leonidig | Ukraine, Odessa

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PYTHON DEVELOPER

Junior Python Developer with hands-on experience in web development, API
design, and Telegram bot creation. Passionate about backend engineering,
writing clean and efficient code, and constantly improving development skills.
Eager to contribute to meaningful projects and grow within a strong tech team.

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TECH STACK
Programming Languages -> Python ( trainee / juniour ) , Java ( basic )
Frontend Technologies -> HTML , CSS , Jinja2, Bootstrap, Charts.js
Frameworks -> Flask, FastAPI, Aiogram, Telethon
Databases -> SQLAlchemyORM, SQLite, PostgreSQL, MongoDB
APIs & Libraries -> Aiosend, Streamlit , Beautifulsoup, numpy, pandas,
SpotifyAPI, Httpx etc.
Tools -> Git, GitHub, Poetry, Postman
Systems -> Linux, MacOS, Windows
Testing -> Pytest, Unittest
Deployment -> Docker containers, Manual deployment via SSH
Concepts -> Asynchronous, OOP, SOLID, DRY, KISS
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Languages -> Russian ( native ) , Ukrainian ( native ) , English ( b1 ) , German
( a1 )

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PROFESSIONAL EXPERIENCE
Solo Developer – DevNet (Developer Social Network)​
April 2025 – Present:

-​ Building an async social platform for developers.
Features: user subscriptions, post CRUD, filtering,comments, stats, and SMTP
email verification. Focused on modular design and maintainable code. Actively
learning Django through hands-on projects.

Backend Developer – Team of 4​
November 2023 – Present:
-​ Developed production-ready web services and Telegram bots. Took on
leadership and occasional full-stack tasks. Improved teamwork,
communication, and time management skills.

Bot Developer – Team of 2​
June – October 2024:

-​ Built Telegram bots using Telethon for automation and community tools.
Refactored Aiogram codebases for scalability. Created an anonymous chat bot
with SQLite persistence.

Solo Developer – Telegram Bot for Local Gym​
September – October 2024:

-​ Created a Telegram bot with admin tools for managing gyms, promos, and
updates. Included user notifications and Dockerized deployment via SSH.

Python Instructor – Private Tutoring​
January 2025 – Present:

​ -Teaching backend development to students (ages 12–16 and one adult).
Topics: Python, Flask, FastAPI, Aiogram, and architecture. Focused on hands-on,
project-based learning.

Solo Developer – Telegram Casino Bot​
March 2025 – Present:

-​ Developing a Telegram casino bot with crypto wallet integration (CryptoBot
API). Features include automated gameplay, real-time transactions, and a
focus on UX and financial safety.