Senior Blockchain Engineer with 10 years of specialized experience in core protocol development. Deep, practical knowledge of Ethereum client architecture, P2P networking, and consensus mechanisms. Proficient in low-level debugging, performance optimization, and implementing cryptographic protocols. Core Languages: Go, Solidity, C++. Blockchain Systems: Ethereum (Geth, Erigon architecture, DevP2P), Bitcoin. Networking: libp2p, DevP2P.