Bartosz Osiński 🌍
Welcome to my World! 💻

Blockchain Developer & Data Analyst bridging the gap between Web3 logic and data-driven intelligence.

AI & Data Analysis: Interactive Data Apps, SQL, Advanced Data Processing (Python, Pandas), AI Agentic Models.

Blockchain & Web3: Smart Contracts (Solidity), Token Standards, Layer 2 Solutions, DeFi & DAO Governance.

About memy stats

Information About me

Blockchain Developer & Data Analyst bridging the gap between Web3 logic and data-driven intelligence. I specialize in creating interactive data applications and decentralized solutions.

Data is the new oil, but code is the engine. I love exploring AI Agentic Models and building robust DAO ecosystems.

AI & Data

Python, SQL
Pandas, Power BI

Web3

Solidity
Smart Contracts

Projects

Featured
Data & Web3

Agentic AI

Autonomous
LLM Agents

My Skills

solidity

90%

Python

85%

SQL & Data Analysis

80%

JavaScript / TypeScript

75%

Power BI / Excel

80%

Agentic AI (LLMs)

70%

My Timeline

2021 - present

Blockchain Developer & Data Analyst - Freelance

Bridging the gap between Web3 logic and data intelligence. Developing secure Smart Contracts (Solidity), architecting DAO ecosystems, and implementing Layer 2 solutions (Starknet, ZkSync). Building interactive data applications and AI Agentic Models using Python, SQL, and advanced LLM integrations.

2021 - 2023

Blockchain Developer - SkyGate

Ethereum contracts development. Solana development. Web3 functionality connection. Product Inventor. Project Management. Leader.

My PortfolioMy Work

Here is some of my work that I've done in various programming languages.

Olist Master Analysis

SQL, Pandas, Power BI | E-commerce data pipeline

Amazon Database

PostgreSQL, Python | Relational design

Web3 Smart Contract Core

Solidity, Hardhat | Foundational infrastructure

Python PIM & ML Engine

Python, Streamlit | ML predictive modeling

OpenSea Collection

Adamancipator

Solidity Basics

Proxy

NFT drop

NFT drop EIP712

Starknet

Foundry

Stake

Knowledge I recommendMy Blogs

Proxy & Upgradeable Contracts

Deep dive into Smart Contract upgradability patterns. Essential knowledge for building scalable Web3 infrastructure.

NFT Merkle Tree Airdrops

Efficient way to distribute tokens/NFTs using Merkle Trees. High-performance logic for optimized gas costs.

Starknet & ZK-Rollups

Exploring Layer 2 scalability with Starknet. Bridging the gap between Ethereum security and high transaction throughput.

Block The Chain (Full Access)

My YouTube channel where I share advanced Solidity tutorials, Web3 security audits, and data-driven crypto insights.

Mastery in Solidity Docs

The ultimate reference for any Blockchain Developer. Staying up-to-date with the latest language features and security fixes.

Ethers.js & Web3 Interaction

Complete guide to interacting with Ethereum. Essential for building frontend applications that communicate with the blockchain.

Contact MeContact

Contact me here

If you have any question let me know. If there is anything that you would like to know and I can give you answer don't think twice, contact me!

Location

Wrocław, Poland

Email

kojar1997@gmail.com

Mobile Number

+48453267827

Languages

Polish, English