About QurDlanok
Smart contracts, written with precision.
We write, audit, and deploy contract logic that behaves exactly as specified — across any EVM-compatible chain, without ambiguity.
Contract logic built for production, not for demos
QurDlanok handles the full lifecycle of smart contract work — from initial architecture to on-chain deployment and post-launch monitoring.
Most contract failures are not cryptographic. They come from incorrect state management, missing edge-case handling, or misaligned business logic. We treat specification and test coverage as seriously as the Solidity itself. Every contract we ship is tested against adversarial conditions, not just happy paths.
Since 2015, our work has spanned DeFi infrastructure, cross-chain bridges, DAO governance modules, token vesting schedules, and multi-signature custody systems. Clients reach us when the stakes are high enough that off-the-shelf templates are not acceptable.
The people behind the contracts
Each engineer works directly with clients. No account managers, no handoffs mid-project — the person you speak with is the person writing the code.
Ostap Verlan
Lead Smart Contract Engineer
Specialises in DeFi protocol design and formal verification. Has shipped vesting, staking, and governance contracts across six EVM chains. Works exclusively in Solidity and Vyper.
Daryna Kharchuk
Security Auditor
Focuses on reentrancy patterns, oracle manipulation vectors, and access control gaps. Every contract passes her review before client handoff — no exceptions regardless of timeline pressure.
Maksym Bodnar
Integration Engineer
Handles front-end and backend integration with deployed contracts — ethers.js, wagmi, The Graph indexing, and event-driven server pipelines. Bridges the gap between on-chain logic and usable product.
