scdtony

Smart Contract Engineer

Blockchain engineer with almost 3 years of experience of writing smart contracts. Building secure and scalable decentralized solutions on Ethereum blockchain using Solidity.Β 

GitHub: https://github.com/Antony-Holovchenko

Techical skills:
* Writing secure and optimized smart contracts using Solidity and JavaScript/TypeScript on the Ethereum network.
* Using Ethers.js for blockchain communication.
* Working with the next tools: Remix, Hardhat, Ganache, and Etherscan for efficient development, testing, and deployment.
* Deep understanding of core Ethereum blockchain concepts, EVM functionality, and L2 networks.
* Proficient in Yul for advanced gas optimizations.
* Working with L2 networks(Optimism).
* Applying well-known security and optimization patterns in smart contract development.
* Building upgradable smart contracts using Transparent Proxies.

What I'm Currently Seeking:
I am looking for an opportunities with blockchain companies/startups/projects to contribute my expertise in secure and innovative smart contract development. I would like to work more with L2 networks and gain new experience in DeFi segment(lending protocols, dex, staking protocols). I am especially interested in RWA segment, so I would be glad to work on such project. (Open to Relocation).

Please feel free to connect with me)


Experience: 3 years

Yearly salary: $120,000

Hourly rate: $45

Nationality: πŸ‡ΊπŸ‡¦ Ukraine

Residency: πŸ‡¨πŸ‡Ώ Czech Republic


Experience

Smart contract developer(Solidity)
NNLabs
2021 - 2022
β€’ Building a decentralized staking protocol (DeFi) on the Ethereum blockchain. β€’ Writing, debugging and deploying smart contracts using Solidity, JavaScript, Ethers.js in Hardhat environment. β€’ Covering contracts code with tests(Mocha, Chai). β€’ Implementing a transparent and efficient reward distribution mechanism based on staking duration and delegated stake. β€’ Implementing a customizable lockup periods with the help of upgradable smart contracts. Using transparent proxies pattern. β€’ Working with L2 networks(Optimism). β€’ Writing Yul code for efficient work with arithmetic operations and complex storage access.

Skills

erc-20
erc-721
ethereum
ethereumjs
evm
hardhat
javascript
nft
openzeppelin
smart-contract
solidity
typescript
english
russian
ukrainian