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WS@winstonsiu
Senior Full Stack Developer with 7 years of experience in web3 technologies.
MalaysiaSenior Software Engineer with 7+ years of experience, including the past 5 years focused on Web3. I’ve worked across DeFi, DEX, DAO, and NFT projects—building smart contracts and full-stack applications that power decentralized systems used in the real world. From launching wallets used by over 600K users to helping secure protocols through partnerships with MetaMask, Coinbase, and Google Cloud, I’ve been hands-on across the blockchain stack.
My core skills include Solidity, Rust, TypeScript, and JavaScript, and I work with tools like React, Next.js, Node.js, NestJS, and Wagmi. I’ve held senior roles at startups like XDEFI, AthleteFi, and Toros Finance, where I’ve built everything from DEX aggregators to custom SDKs and on-chain analytics. I’m passionate about building secure, scalable, and impactful Web3 tools, and I’m always exploring what’s next in blockchain tech.
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Work history, roles, and key accomplishments
AthleteFi
Apr 2025 - Present (7 months)
- Designed and developed Dex-Aggregator to boost the usage of protocol tokens.
- Built a responsive, pixel-perfect front-end application using Next.js, ensuring a seamless and intuitive user experience.
- Integrated Wagmi.js and Viem.js for secure wallet connections and real-time interaction with on-chain smart contracts.
Toros Finance
Dec 2023 - Mar 2025 (1 year 3 months)
Created and maintained admin panel pages regarding identifying on-chain vulnerabilities related to exploit addresses on Ethereum and Polygon.
Developed basic SDK functions and packages using JS and TS and published to NPM
Designed and developed backend sides with Nest.js/TypeScript.
XDEFI (EX-CTRL)
Apr 2020 - Dec 2021 (1 year 8 months)
Built the infrastructure of XDEFI wallet, being used by more than 600K users on the chrome store.
Developed the chrome extension wallet similar to Metamask using React.
Integrated asgardex-binance/ethereum/bitcoin(ThorChain) and BEPSwap.
Understood Metamask and other crypto wallets open sources and inspired from mto build expandable project structure
Crypto App Factory
Jun 2017 - Mar 2020 (2 years 9 months)
Developed an experimental stablecoin backed by liquidity pool tokens and utilized Chainlink Oracle feeds for valuation. Launched a DApp on the EVM mainnet using React.js and Web3.js.
Degrees, certifications, and relevant coursework
AIBachelor of Science, Computer Science
2013 - 2017
Grade: 3.5
Completed a Bachelor of Science in Computer Science with a GPA of 3.5. The program covered various aspects of computer science, including programming, software development, and systems analysis, preparing me for a career in technology and software engineering.
Software and tools used professionally
Blockchain
Ethereum
IPFS
Amazon EC2
Google Cloud Platform
Amazon S3
GitHub
Kubernetes
Jenkins
Dex
PostgreSQL
MongoDB
Gmail
Node.js
Next.js
NestJS
Bootstrap
Figma
Redis
Terraform
Azure DevOps
Jira
Mocha
React
Vue.js
jQuery
AngularJS
Webpack
JavaScript
Python
HTML5
ES6
CSS 3
Kafka
GraphQL
Elasticsearch
Vercel
TypeScript
Git
Docker
Amazon Web Services (AWS)
Ethers.js
Coinbase
MalaysiaYou can contact Winston and 90k+ other talented remote workers on Himalayas.
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