Calvin Cheng

Calvin Cheng is a blockchain developer and smart contract engineer with extensive experience in the cryptocurrency and decentralized finance (DeFi) space. His LinkedIn profile provides insights into his professional background:

Professional Experience

Blockchain Smart Contract Engineer at Waterfall DeFi: Calvin worked at Waterfall DeFi, a DeFi startup, from December 2021 to March 2023.1 During his time there, he:

• Built a risk tranching yield aggregator on EVM-compatible blockchains like BSC and AVAX, achieving a peak Total Value Locked (TVL) of over $20 million
• Developed and deployed non-custodial smart contracts that connected to multiple external lending pools
• Created unit tests and end-to-end tests for product cycles in simulated on-chain environments
• Implemented an on-chain data query service using Graph Protocol (GraphQL)

His tech stack included Solidity, OpenZeppelin, Truffle, Foundry, Hardhat, Ethers.js, Mocha, TypeScript, Node.js, and GraphQL.1

Blockchain Developer & Consultant at Deloitte Consulting: Prior to his role at Waterfall DeFi, Calvin worked at Deloitte Consulting from July 2018 to April 2020.1 His responsibilities included:

• Designing and implementing blockchain networks for government entities
• Developing permissioned blockchain systems for waste traceability
• Formulating cryptocurrency payment strategies for multinational companies
• Enhancing Hyperledger Fabric-based systems
• Conducting research on stablecoins and Security Token Offerings (STOs)

Education and Early Career

Calvin's early career includes a placement at the Hong Kong Monetary Authority's Fintech Facilitation Office, where he worked on distributed ledger technology projects and gained exposure to central bank digital currencies.1

Skills and Expertise

Calvin has demonstrated expertise in:

• Smart contract development using Solidity
• Blockchain platforms (Ethereum, BSC, AVAX)
• DeFi protocols and yield aggregation
• Testing and deployment of blockchain applications
• Cryptocurrency and blockchain consulting

His diverse experience spans both permissionless and permissioned blockchain systems, as well as public and private sector applications of blockchain technology.