Protocol Engineer for Web3 Payments Infrastructure

Wired Currencies; New York, Northern (NY, KY); Hybrid; USD 150,000 - 210,000; Full time

Job summary

Fun in New York, NY is hiring a full-time Protocol Engineer to join the core blockchain team. You will design, develop, and deploy secure smart contracts and protocol implementations across multiple platforms for Web3 payments infrastructure.

You will bring production smart-contract experience, blockchain architecture and cryptography knowledge, and familiarity with Solidity, Rust, Move, or similar languages. Collaboration with backend and product teams is essential.

Qualifications

• Production smart-contract development experience is required.
• Knowledge of blockchain architecture and cryptography.
• Experience with Solidity, Rust, Move or similar languages.
• Experience with DeFi protocols, token standards, cross-chain communication.
• Experience with security audits, incident response, and on-chain debugging.

Responsibilities

• Design and deploy secure smart contracts
• Develop protocol implementations across blockchain platforms
• Write efficient, tested code
• Participate in security audits and incident response
• Research protocols and DeFi primitives
• Debug on-chain issues
• Cross-functional communication for infrastructure decisions

Skills

Smart contract development

Blockchain architecture

Cryptography

DeFi protocols

Cross-chain communication

Security testing & audits

Incident response

On-chain debugging

Solidity

Rust

Move

Job description

Fun in New York, NY is hiring a full-time Protocol Engineer to join the core blockchain team. You will design, develop, and deploy secure smart contracts and protocol implementations across multiple platforms for Web3 payments infrastructure.

You will bring production smart-contract experience, blockchain architecture and cryptography knowledge, and familiarity with Solidity, Rust, Move, or similar languages. Collaboration with backend and product teams is essential.