Web3 Protocol Engineer for Cross-Chain Payments

The Fun Group; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

The Fun Group is building the financial infrastructure for internet capital markets. We’re seeking a Protocol Engineer to join our core blockchain team and help design secure, scalable Web3 payments infrastructure.

You will design and implement cross-chain smart contracts, work with backend and product teams, and contribute to security audits while exploring new DeFi primitives to power millions of transactions across multiple chains.

Qualifications

• Production smart contract experience on major blockchains.
• Knowledge of blockchain architecture and cryptography.
• Experience with DeFi protocols and cross-chain patterns.
• Security-minded with awareness of vulnerabilities.
• Clear communicator across 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 meeting business requirements
• Write efficient, well-tested code and participate in security audits
• 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

Skills

Smart contract development

Blockchain architecture

Security mindset

Cross-functional communication

Cryptography basics

DeFi protocols

Tools

Solidity

Rust

Move

Job description

The Fun Group is building the financial infrastructure for internet capital markets. We’re seeking a Protocol Engineer to join our core blockchain team and help design secure, scalable Web3 payments infrastructure.

You will design and implement cross-chain smart contracts, work with backend and product teams, and contribute to security audits while exploring new DeFi primitives to power millions of transactions across multiple chains.