- Developing and deploying smart contracts using Solidity on Ethereum

- Built decentralized applications using React, Web3.js, and Python

- Implemented load testing scripts for smart contract interactions, simulating high-volume transactions

- Deployed decentralized storage solutions using IPFS

- Utilized QuickNode and The Graph for indexing and querying blockchain data

- Filter Blocks on ERC (Find all trades for certain token since launch block with possibility to filter from xx to yy block)

- Token Compare Tool ERC (Identify and display wallet addresses that exhibit an overlap in terms of buying the specified tokens on ERC20)

- Contracts difference checker (Compares and highlights differences between the code of various ERC20 smart contracts)

- Telegram bot integrated with ChatGPT API

Worked in IGT Pay for multiple clients including Totalizator Sportowy(Poland), Loterie Romande (Switzerland), Rhode Island Lottery(US) and couple more in the States;

Responsible for designing the database architecture from development to production environments, ensuring the secure handling of sensitive data for both client and customer sides;

Maintaining the production databases, implementing optimizations, and making changes upon request.

Writing scripts for load testing to simulate high-traffic scenarios with numerous concurrent platform users;

Maintaining a python script that automates creating multiple env’s for databases testing purposes and deploying them (Linux, Dockers, Microsoft Azure).