Blockchain Engineer – Onsite NYC, Equity

Wwshemi; New York (NY); In loco; USD 125.000 - 180.000; Tempo pieno

Vantaggi offerti da questo lavoro

Equity

Medical insurance

Vision insurance

Dental insurance

Descrizione del lavoro

HIFI is hiring a Blockchain Engineer to own on-chain systems and wallet infrastructure. You will design and implement integrations, smart contracts, and wallet components that connect stablecoins to fiat rails, while ensuring reliability and compliance in a production environment.

You will collaborate with engineering and compliance to manage on-chain payments and settlement, grow the ledger, and scale the infrastructure as volume expands.

Competenze

• 3+ years of software engineering experience, with 1–2+ years building blockchain systems in production.
• Deep familiarity with EVM chains, transaction lifecycles, gas mechanics, failure modes, and Solidity basics to read/integrate contracts.
• Experience with wallet architecture, custody models, signing services, or MPC/HSM-backed setups.
• Strong backend fundamentals: API design, data modeling, and distributed systems consistency.

Mansioni

• Build wallet infrastructure including key management and transaction signing across custodial and programmatic wallets.
• Handle on-chain transactions across EVM and other networks with gas, nonce management, and retries.
• Implement stablecoin minting, burning, and settlement logic connecting USDC and fiat rails.
• Integrate with centralized/decentralized exchanges for swaps and liquidity routing; enable cross-chain bridges.
• Maintain a double-entry ledger linking on-chain balances, banking partners, and customer accounts with reconciliation.
• Develop event listeners, confirmations, and webhooks for real-time on-chain visibility.
• Create idempotent pipelines with failure recovery and screening hooks for correct funds movement.

Conoscenze

Software engineering

Blockchain systems

EVM knowledge

Backend design

Distributed systems

Code review writing

Strumenti

Solidity

Descrizione del lavoro

HIFI is hiring a Blockchain Engineer to own on-chain systems and wallet infrastructure. You will design and implement integrations, smart contracts, and wallet components that connect stablecoins to fiat rails, while ensuring reliability and compliance in a production environment.

You will collaborate with engineering and compliance to manage on-chain payments and settlement, grow the ledger, and scale the infrastructure as volume expands.