Blockchain Web3 Engineer

Blockchain Web3 Engineer

Location: New York City (Complete Onsite) Employment Type: Full time Permanent

Job Description

Must Have Technical/Functional Skills

Core Web3 / Blockchain Skills (Must-Have)

• Strong understanding of blockchain fundamentals: transactions, blocks, gas/fees, wallets/keys, RPC, finality, consensus basics
• Hands-on experience with smart contracts: Solidity (preferred) and development tooling (Hardhat/Foundry/Truffle/Remix)
• Experience working with EVM-based chains (Ethereum/Polygon/Arbitrum/Optimism/BSC) or enterprise chains (Hyperledger Fabric/Corda/Quorum) depending on project

Roles & Responsibilities

Smart Contract Engineering & Web3 Development

• Design, develop, and maintain smart contracts (Solidity/Vyper or relevant stack) aligned to product and security requirements.
• Build backend/Web3 components for contract interaction: transaction orchestration, signature flows, nonce management, gas strategies, and Web3 SDK integrations.
• Develop and manage contract deployment pipelines, including ABI/versioning, migrations, upgrade strategies (proxy patterns), and release coordination.
• Implement secure patterns for contracts.
• Support smart contract testing.

Node Operations & Infrastructure

• Deploy, configure, and operate blockchain nodes and supporting infrastructure: full nodes/archival nodes, RPC endpoints, validator nodes (as applicable).
• Manage node upgrades, chain configuration changes, and incident response for production networks.
• Implement operational tooling for: node health checks, RPC performance monitoring, log aggregation, and alerting.
• Handle blockchain-specific reliability concerns: re-org handling, finality considerations, peer connectivity, RPC failover, rate limiting.

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