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Senior Blockchain Developer

Senior blockchain developer with 6+ years building production smart contracts and multichain backends across EVM, TRON and Bitcoin. Currently Head of Blockchain Development.

I've delivered DeFi protocols (Uniswap V3/V4, AMMs, staking) handling $30M+ in on-chain volume, custody & payments infrastructure (HD wallets, multisig treasuries, crypto acquiring), account-abstraction integrations (ERC-4337, MetaMask Delegator), and cross-chain systems (Cosmos SDK / Tendermint, sub-20s swaps). I've led teams and products through CySEC and MiCA security audits and licensing, and mentor junior engineers.

Looking for remote senior IC or lead roles in DeFi, smart contracts, wallet/AA, or custody/payments. Open to full-time or B2B contract (USDT/USDC).

Stack: Solidity, Vyper, TypeScript/Node.js, OpenZeppelin, Hardhat, ethers.js, web3.js.

Experience: 6 years

Yearly salary: $140,000

Hourly rate: $70

Nationality: 🇧🇾 Belarus

Residency: 🇧🇾 Belarus

Experience

Head of Blockchain Development

Collect & Pay

2025 - 2026

As Head of Blockchain Development, I lead the engineering team and own architecture and delivery for a multichain (EVM, TRON, Bitcoin) custody & payments platform, and led the team and product through CySEC and MiCA security audits and licensing.

Lead Blockchain Engineer / Consultant

Zero Point Labs

2025 - 2026

Lead the blockchain subteam on a CEX-DEX arbitrage platform, owning architecture decisions and technical tradeoffs.

Blockchain Developer

Firmshift

2021 - 2025

Mentored and led junior blockchain developers; owned design and review of DeFi smart-contract systems handling $30M+ in on-chain volume, plus cross-chain infrastructure (Uniswap V3/V4, L2 interoperability, and a private L0 network with sub-20s swaps).

Skills

defi

erc-1155

erc-20

erc-721

erc-777

evm

node

typescript

solidity

english

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