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Protocol Engineer

Fun.xyz· Engineering
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Hybrid (New York, NY)Full-timePosted 10mo ago

About the role

We are building Web3 payments infrastructure and need a Protocol Engineer to design and implement secure smart contract systems, cross-chain integrations, and DeFi primitives across multiple blockchains.

Responsibilities

  • Design, develop, and deploy secure smart contracts and protocol implementations across multiple blockchain platforms
  • Collaborate with backend and product teams to architect blockchain solutions that meet business requirements
  • Write highly efficient, well-tested code and participate in security audits to ensure protocol safety
  • Research and evaluate new blockchain technologies, protocols, and DeFi primitives for integration opportunities
  • Contribute to incident response and debugging on-chain issues to ensure protocol reliability

Qualifications

  • Strong experience building and deploying production smart contracts on major blockchain platforms
  • Deep understanding of blockchain architecture, consensus mechanisms, and cryptographic principles
  • Hands-on experience with smart contract development languages (Solidity, Rust, Move, etc.)
  • Solid grasp of DeFi protocols, token standards, and cross-chain communication patterns
  • Strong security mindset with knowledge of common smart contract vulnerabilities and best practices
  • Clear communicator who can explain complex blockchain concepts to cross-functional teams

Skills

Required:Smart contract developmentBlockchain architectureCross-chain integrationSecurity auditingCommunication
Last updated Jul 1, 2026. Interested? Apply on the company site.
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About Fun.xyz

Modern payment infrastructure for fast growing fintechs.

For us, building a company is more about values, than it is about business.

paymentfintechinfrastructuredepositstransactions
Company profileWebsite

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