Protocol Engineer
The Fun Group, Inc. (Fun) provides global payments infrastructure for modern fintechs and internet capital markets, combining fiat and blockchain payment rails.
Funding history
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About The Fun Group, Inc.
Fun is a technology company that orchestrates deposit, withdrawal, checkout, and stablecoin-payment flows across wallets, licensed payment providers, on-chain liquidity, and blockchain infrastructure. Its products support multi-chain asset movement, fiat on/off-ramps, stablecoin settlement, and unified crypto-and-fiat checkout for applications serving global users. Fun states that it provides technology infrastructure only, while payment and financial services are delivered by regulated partners under their own authorizations.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design and implement secure, efficient smart contract systems and blockchain integrations that power millions of transactions across multiple chains. You will work on challenging technical problems at the intersection of smart contracts, cross-chain protocols, and decentralized finance, collaborating with backend and product teams to architect blockchain solutions. You will research new blockchain technologies and DeFi primitives, write highly efficient well-tested code, participate in security audits, and contribute to incident response and debugging on-chain issues.
Requirements
- 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
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
