kevintsang
Senior Blockchain Engineer
Experienced Senior Blockchain Developer with 8+ years of expertise in designing, developing, and securing blockchain-based applications and smart contracts. Proficient in Ethereum, Solana, and Hyperledger, with a strong focus on DeFi protocols, tokenomics, and cross-chain interoperability. Adept at optimizing gas-efficient smart contracts, ensuring scalability, and driving performance improvements in blockchain applications. Skilled in collaborating with cross-functional teams to deliver secure, scalable, and high-performance blockchain solutions. Committed to staying ahead of emerging blockchain technologies and trends to provide cutting-edge solutions.
Experience: 7 years
Yearly salary: $88,000
Hourly rate: $50
Experience
Founding Blockchain Engineer
RedToken Global 2024 - 2025
- Designed and deployed enterprise-level payment infrastructure using Hyperledger Fabric. - Led development of DeFi modules for nft platforms, staking, yield farming, and liquidity protocols. - Implemented EVM-compatible and cross-chain logic for token interoperability. Conducted smart contract audits and designed test strategies to ensure protocol safety. - Managed cloud-native infrastructure using AWS, Docker, and Kubernetes. Contributed to research on post-quantum cryptography and blockchain security.
Lead Blockchain Engineer
Vaultik 2023 - 2024
Delivered tokenized Digital Product Passports (DPPs) for physical-digital hybrid products. Architected NFT minting tools for luxury brands, integrating Web3 wallets and ownership proofs. Developed scalable B2B APIs and SDKs for e-commerce and loyalty systems. Ensured protocol integrity through continuous integration and on-chain test environments.
Senior Blockchain & Full Stack Engineer
Chainlink Labs 2020 - 2023
Core contributor to major Chainlink products including Chainlink CCIP (Cross-Chain Interoperability Protocol), Chainlink VRF v2, Chainlink Functions, Data Streams, and Keepers (Automation), Chainlink Staking v0.1. Built backend and smart contract integrations for oracle systems and dApps. Focused on contract gas optimization, modular design, and robust testing.
Software Engineer
Binance 2018 - 2020
Supported early development and scaling of Binance Smart Chain (BSC). Delivered smart contract infrastructure for Binance Launchpad, Earn, and Staking products. Collaborated on cross-functional teams to implement backend and on-chain modules. Ensured protocol-level compliance, performance, and scalability in live environments.
Skills
defi
erc-1155
erc-20
erc-4626
erc-721
golang
hardhat
javascript
mev
mongo
nestjs
nextjs
nft
node
polygon
postgres
python
react
rust
solana
sql
tailwind
typescript
solidity
english