Senior Protocol Engineer - Crypto

Job Description

Job Description

Career Renew is recruiting for one of its clients a Senior Protocol Engineer - Crypto - this is a fully remote position for US based candidates.

We are the web3 user acquisition platform powering onboarding for 500+ protocols since 2021. We've facilitated 500M+ transactions and 60M+ on-chain credential mints across 3M+ users on 40+ chains.

Our platform serves Coinbase, Uniswap, Robinhood, Solana, Phantom, Optimism, Base, and Arbitrum. We launched our L3 token in 2024, now trading on OKX, Bybit, and Coinbase. $21M in total funding includes a $15M Series A led by ParaFi and Greenfield.

The Role

Lead design and implementation of our smart contract infrastructure for core and new initiatives. Own protocol architecture, security, and optimization across multiple platforms supporting millions of users.

What You'll Be Doing

Design and implement core protocol contracts and token distribution mechanisms

Drive protocol research, prototyping, and architecture decisions.

Optimize gas efficiency and security for high-volume systems

Lead contract audits and establish security best practices

Conduct research in areas like cross-chain bridging, token economics, and scalability

Required

5+ years production smart contract development

Expert-level Solidity with proven security practices

Shipped contracts to mainnet managing significant TVL ($10M+)

Deep DeFi knowledge : staking mechanisms, MEV protection, oracle security

Experience with invariant testing and formal verification

Led contracts through professional audits (Trail of Bits, OpenZeppelin, etc.)

Strong track record mentoring engineers and conducting thorough code reviews

Multi-chain deployment experience (Ethereum L2s, alt-L1s)

Preferred

Experience with Vaults, Lending protocols, and yield generation.

Tokenomics design for live projects

Experience with account abstraction or smart wallets

Background in cross-chain messaging protocols (LayerZero, Wormhole, Hyperlane)

Contributions to DeFi protocols or infrastructure projects

Experience with off-chain backend services or frontend development.

Technical Environment

Solidity, Foundry

Multi-chain deployments (Ethereum, Base, Arbitrum, Polygon, Optimism, Solana)

Viem for contract interactions

Integration with indexers and backend systems