Денис

DENYS OSADCHUK
TEAM LEAD / DEVELOPER

About Me
Experienced Fullstack Developer with five years of professional expertise. Possess a strong
understanding of application functionality and performance optimization. Proficient in blockchain
development, including Dapp creation and more. Successfully completed and deployed multiple
substantial projects, continuously experimenting with new ideas at my personal home lab.
Proficient
in English and adept at collaborating within international teams.

Experience

Team Lead / Developer Oct 2025 - Now

NDA Ukraine, Remote

Tech Stack: Python, React, Vue, Node.js, Django, FastAPI, TelegramAPI, OpenAI API, Docker,
PostgreSQL, MongoDB, sqlite

Contacts
Fullstack Dev May 2024 - Oct 2025

 [відкрити контакти](див. вище в блоці «контактна інформація») Ltd "PROMAVTOMATIKA Vinnytsia" Vinnytsia, Ukraine, Remote

 [відкрити контакти](див. вище в блоці «контактна інформація»)
Tech Stack: Python, Fast API, Linux, JS, Zoho Deluge, Telegram API, Microsoft Graph API, Jira API,

 Bălți, Moldova OpenAI API, Next.js

Computer Engineer Dec 2023 - May 2024
Skills
Ltd "Big Brother" Vinnytsia, Ukraine
Python Django
Tech Stack: Python, Django, Vue.js, Git, Docker, Telegram API
Flask/Fast API
Fullstack Dev Aug 2023 - Nov 2023
Telegram API/ Bots development
LeadsGuru.ai USA, Israel, Remote
JS/HTML/CSS Vue.js
Tech Stack: Python, Django, HTML, JS, CSS, Git, OpenAI API, Chat GPT, Docker
Next.js React.js Git

Docker Linux Windows Fullstack/Blockchain Dev Oct 2022 - Aug 2023

ElephantsLab Vinnytsia, Ukraine
OpenAI API ChatGPT
Tech Stack: JS, CSS, HTML,Vue.js, Node.js, Git, REST Api, Web3, Ethers.js, Metamask, Solidity,
Backend Dev Frontend Dev
Truffle,
Zoho Deluge Hardhat, Python, Django, PostgreSQL, MongoDB, sqlite, Docker, FastAPI, Flask

Processes Automation Solidity
Python Dev Dec 2020 - Oct 2022
DApps Blockchain Dev
SE "Electric Systems" Vinnytsia, Ukraine

Tech Stack: Python, Flask, REST Api, Postman, Pydantic, PostgreSQL, Telegram API, Linux(Debian),
Languages Windows Server
English (B2)

Ukrainian (Native)
Education
Polish (A2)
Bachelor, 123 "Computer Engineering" 2019 - 2021
Romanian (Beginner)
Vinnytsia National Technical University

Junior Specialist, 123 "Computer Engineering" 2015 - 2019
Vinnytsia Technical College