Protocol Developer / Roman

6+ years of experienceAlmaty, Kazakhstan

Protocol Developer with 4+ years in EVM smart contracts and 6+ years in software engineering. Specialise in cross-chain messaging protocols, bridge infrastructure and DeFi liquidity systems. Delivered production-grade Solidity contracts and off-chain services across 210 EVM networks, contributing to protocols with $269M peak TVL.

Skills

  • Solidity development with Foundry and Hardhat
  • Smart contract security, fuzz/invariant testing, and audit remediation
  • DeFi protocols: vaults, staking, vesting, liquidity pools, and DEX forks
  • X-chain infrastructure, bridge systems, messaging protocols (Chainlink CCIP), ZK integrations
  • Multi-chain deployment and testing across 210+ EVM networks
  • On-chain fee models, gas optimization and finality handling
  • TypeScript off-chain services (relayers, rebalancers, price feeds)
  • Viem, OpenZeppelin, Tenderly, Docker, PostgreSQL, GraphQL, and subgraphs

Experience

May 2025 — now

Protocol Developer

Concero
  • Maintained V1 cross-chain messaging and bridge protocol at $269M peak TVL using Chainlink CCIP, Functions and Automation
  • Architected Concero Messaging V2: modular cross-chain protocol with customizable verification, on-chain fee models and gas optimizations
  • Built Lanca Bridge Framework with automated liquidity rebalancing and off-chain deficit/surplus detection
  • Implemented canonical USDC bridge contracts enabling native Circle USDC conversion without dApp migration
  • Led private Cyfrin audit preparation and remediation for Messaging V2 and Lanca Bridge; led USDC Canonical Bridge audit
  • Deployed and tested contracts across 210 mainnet networks, resolving chain-specific finality and RPC issues
  • Designed off-chain price-feed updater service powering fee and gas pricing across messaging protocol
  • Built Depo: chain-agnostic liquidity provision module with AAVE vault adapter (pre-release)
Oct 2024 — Mar 2025

Protocol Developer

Hinkal
  • Implemented UTXO-based private transfer flow with relay-server fee abstraction for private transactions
  • Reduced onboarding to single transaction by combining access-token acquisition and deposit
  • Extended Circom schemas for deposits using EOA cryptographically linked to private address
Jan 2022 — May 2025

Smart Contract Developer & DeFi Researcher

Metalamp
  • Delivered smart contract systems across 10+ DeFi client projects: launchpads, DEX forks, vaults, staking, vesting and NFT infrastructure
  • Ported and deployed Camelot DEX contracts to zkSync Era, enabling client access to native L2 liquidity
  • Published 20+ technical DeFi and blockchain research articles on Habr, reaching 130K+ total views

Contact

Takovska 5, Belgrade, 🇷🇸 Serbia.

Email: [email protected]