KL

Kevin Lee

Available to hire

I’m a Full-stack & Blockchain Developer with strong experience building secure, scalable web applications and decentralized solutions from the ground up.

About

I’m a Full-stack & Blockchain Developer with strong experience building secure, scalable web applications and decentralized solutions from the ground up. I specialize in end-to-end development—from intuitive front-end interfaces to robust back-end systems and smart contract architecture.

My core strengths include JavaScript/TypeScript, React, Node.js, REST & GraphQL APIs, and blockchain technologies such as Ethereum, smart contracts (Solidity), Web3, and DeFi integrations. I have hands-on experience working with enterprise-level systems as well as fast-moving product teams.

What sets me apart is my ability to bridge traditional web development with blockchain innovation. I don’t just write code—I focus on security, performance, and real-world usability, ensuring products are production-ready and scalable. I communicate clearly, work independently, and adapt quickly to new technologies and business requirements.

  • Joined January 2026

Languages

  • EnglishAdvanced

Industry experience

  • Computers & Electronics

More experts in Singapore, Singapore

Projects · 1

Developed complex frontend interfaces for both admin and customer platforms using React.js, Redux, and MUI, with a focus on enhancing performance and user experience.

Created the Danapay token using Solidity on EVM-compatible chains and Layer 2 solutions like Polygon, utilizing web3 technologies such as web3.js, ether.js, token exchange, escrow systems, Hardhat, and Gas Station Network (GSN).

Implemented a complex mathematical algorithm for the Danapay base token to boost the popularity of candidates within the platform, integrated KYC features using Sumsub for secure user identity verification.

Built and deployed advanced smart contracts for token functionality and a token exchange system that operates as a DEX. Participated in integrating the Danapay Bridge with wallet functionality using GSN.

Gained hands-on experience in unit testing with Jest and React Testing Library, while using tools like Husky, SonarCloud, and DeepSource for automation, project management, and maintaining well-structured, efficient codebases.

Tools: Smart Contract, ERC20, GSN, React/Next.js, Jest, Web3 …

danapay.com
  • AI Developer
  • Blockchain Developer
  • Full Stack Developer

Work experience

Web & blockchain dev · danapay.comDec 2022 – Jun 2024 · 1 yr 7 mos

Full-stack developer

Education

Bachelor of Computer Science · Singapore Institute of Technology2017 – 2021

Experienced with Java, C++, Python, AI, Web technologies

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