Rostyslav Popov

Kraków,12

Summary

Backend developer with 2+ years of Python experience, focused on web backends, REST APIs, and database-driven applications. Builds small, useful products around Telegram, AI tools, and crypto/Web3, from bots and REST services to experimental Solana dApps. Comfortable working in Linux/bash environments and using AI assistants in the daily workflow for faster prototyping, debugging, and learning.

Overview

years of professional experience

Work History

Backend Python Developer

Freelance / Self-employed

01.2023 - Current

Developed and maintained Python backends and REST APIs with SQLite/SQLAlchemy storage for small utilities and side projects (bots, mini-apps, internal tools).
Created Telegram bots using Aiogram, Telegram Bot API and Telegram API: commands, callbacks, inline keyboards, simple admin flows, persistence in SQLite.
Worked on APK signing/keystore inspection tasks on backend side, automating checks around app builds and certificate details.
Used Linux/macOS and bash scripting for everyday development, automation, and deployment of small services.
Wrote project proposals and collaborated with clients on Kwork, adapting solutions to requirements and timelines.

Education

Self-taught Backend Python Developer -

Online courses, documentation, and project-based learning

Associate - Mechanical Engineering

KGEMK KNU

Ukraine

07-2019

Skills

Python: Core Python, Python Software Development, NumPy, Matplotlib, sqlite3
Web & APIs: REST API Development, JSON, basic HTML, API integrations
Data & Databases: SQLite, SQL databases, SQLAlchemy ORM

AI & Automation: AI Agents, Artificial Intelligence techniques and tools, Perplexity and other AI assistants in development workflow
Dev Environment: Linux, macOS, Unix shell, Git Bash, Linux Bash Shell & scripting
Other: TypeScript (basics), HTML, command-line tooling, Windsurf/other modern editors

Selected Projects

aCharm Slots – Solana dApp Game, Python, Solana, SQLite, SQLAlchemy, Git, Designed and implemented game logic for a slot-machine-style Solana dApp, modeling rewards and state transitions on top of blockchain concepts., Used SQLAlchemy + SQLite to simulate on-chain behavior locally, test odds, and tune parameters before interacting with Solana., Telegram Bots (Utility & Automation), Python, Aiogram, Telegram Bot API, SQLite, Built multiple bots handling onboarding, notifications, and simple tools, using Aiogram middlewares, parse modes, and structured handlers., Persisted user sessions and settings in SQLite/SQLAlchemy, designing simple schemas for reliability and ease of migration., Terminal-based Digital Services Shop (Prototype), Python, CLI, SQLite, Unix shell, Prototyped a terminal/SSH-like shop that sells one-time digital services (VPN access, one-time numbers), including catalog, token issuance, and simple accounting logic., Personal Landing Page / CV Site, Built and published a personal landing page presenting skills, projects, and contact info, iterating on positioning like “Backend Developer AI-assisted workflow Crypto Enthusiast.”

Additional Information

Languages: Russian (native), English (working proficiency).

Timeline