mkushka
Lead Senior Smart Contract Engineer With Founding Experience
Senior Smart Contract Engineer with 10+ years of Web3 development experience, including 5 years of Solidity expertise, over 3 years of startup founding experience, and 3+ years in lead blockchain development roles. Proven track record building institutional DeFi infrastructure, with smart contracts securing $21.2M+ in production. Deep experience bridging traditional finance and blockchain through VASP-licensed operations and institutional sales to major banks and exchanges.
Experience: 6 years
Yearly salary: $120,000
Hourly rate: $60
Nationality: 🇺🇦 Ukraine
Residency: Uk
Experience
Founder & CEO
We Make Tech 2022 - 2023
Provided Web3 and Web2 development services for international clients.
Lead Blockchain Developer
Consider IT Done Technologies 2021 - 2023
Built sophisticated Domain-Specific Language (DSL) for on-chain smart contract composition enabling GP/LP investment vehicles with complex capital distribution logic. Designed system architecture with heavy gas optimization across DSL → Solidity → EVM compilation layers. Pioneered on-chain composition paradigm vs. traditional off-chain compilation for institutional smart contracts. Solved cost-scalability-risk tradeoff for complex financial instruments with dynamic upgradability. Developed Liquidity Bootstrapping Pool smart contracts audited by Paladin Blockchain Security. Facilitated $21.2M+ in token sales across 36 projects on Avalanche mainnet (2021-2025). Production-grade contracts managing significant institutional value with professional third-party security audit. Architected DAOsign: Decentralized agreement platform with cryptographic proof-of-signature for DAOs. Designed and developed Solidity (Ethereum) and Rust (Polkadot) smart contracts. Led DeFi protocol integrations with Uniswap V2/V3, MakerDAO, and Compound Finance. Designed and executed Solidity internship program: trained 6 candidates (2 successfully placed as Junior Developers).
Blockchain Node.js Developer
LineUp 2020 - 2021
Integrated multi-blockchain payment infrastructure (Ethereum, Bitcoin, Tron, Ripple, Doge, BNB Chain, ERC-20, TRC-20, BEP-20) for crypto betting platform.
Skills
architecture
c-plus-plus
javascript
postgres
python
tech-lead
solidity
english
russian
ukrainian