Ilona kasiak

Nethermind builds and secures core Ethereum infrastructure.

We develop the Nethermind execution client, contribute to network upgrades, and deliver protocol-level work across rollups, zero-knowledge systems, and cross-chain architecture. Our security team audits smart contracts, ZK circuits, and off-chain components, with formal verification capabilities for critical systems.

We maintain deep expertise across the full stack—from client optimization to open-source tooling—backed by continuous contributions to Ethereum's evolution. As blockchain intersects with AI, we're developing hardware that anchors digital identity in verifiable biometrics with cryptographic privacy guarantees.