dinhkhai0201

Web3 Developer

Hi, I’m Khai — a Full Stack Engineer with 5+ years of experience building web, mobile, and blockchain applications.

I help startups and product teams turn ideas into scalable products by covering the full development cycle, from system design and user-facing interfaces to backend APIs, payments, and deployment workflows.

I’m strongest when working on products that need both speed and solid engineering foundations — whether that means building a platform from scratch, improving an existing codebase, or shipping features that are clean, maintainable, and ready to scale.

What I bring to the table:

  • End-to-end product development across frontend, backend, and blockchain
  • Clean, well-structured code with strong attention to maintainability
  • Fast execution with clear communication and daily progress updates
  • A strong focus on usability, performance, and real business needs

My core stack includes React.js, Next.js, React Native, Node.js, NestJS, TypeScript, Solidity, PostgreSQL, MongoDB, Tailwind CSS, GraphQL, Docker, and AWS.

I’ve also worked with Stripe integrations, admin dashboards, CI/CD pipelines, CMS platforms, and DeFi-related systems.

I work best with founders, startups, and teams looking for a reliable engineer who can think beyond implementation and contribute to product architecture, development quality, and long-term scalability.

If you need someone who can build thoughtfully and move fast, I’d be glad to discuss your project.


Experience: 4 years

Yearly salary: $0

Hourly rate: $25

Nationality: 🇻🇳 Vietnam

Residency: 🇻🇳 Vietnam


Experience

Senior Full‑Stack Developer
Freelancer
2024 - 2025
- Led end-to-end development of web platforms from system design to production delivery. - Built scalable user interfaces and APIs for blog/forum-style products and DeFi systems. - Integrated Stripe Connect payment flows for platform transactions and payouts. - Established CI/CD pipelines to improve development speed and release reliability. - Developed admin CRM dashboards to support operations, content, and user management.
FRONTIER - YOUR FRONT SEAT TO CRYPTO AND DEFI
Luxtech
2022 - 2022
- Develop User Interface - Integrate Wallet connection and call to smart contract
WEB3 PROJECTS SENIOR
Luxtech
2022 - 2024
- Write smart contract with Solidity - Develop User Interface with NextJs, ReactJs - Develop REST/GraphQL API with NestJs - Connect UI with API - Integrate Wallet connection and call to smart contract - Deploy smart contracts on some testnets
TRADE MULTIPLE-CHAIN NFTS PLATFORM
Luxtech
2022 - 2022
Develop User Interface Develop REST API - Write smart contract with Solidity - Integrate Wallet connection and call to smart contract - Deploy contract in some testnet(goerli, sepolia) and mainnet(polygon, arbitrum,..) - Deplopy website to IPFS
DRNEE - KYC, CHAT & SEND CRYPTO CURRENCY
Luxtech
2021 - 2021
- Implement new features - Develop User Interface - Build app in ios and android - Integrate APIs
SUPERPRODUCTOR - ONLINE PLATFORM FOR BEATS TRADING
Luxtech
2021 - 2022
- Implement new features - Develop User Interface for Web, IOS, Android app - Develop REST/GraphQL API
THE SOLBULL NFT
Remote
2020 - 2020
Develop User Interface - Integrate Wallet connection and call to smart contract - Create NFTs and Pools with Candy Machine - Build presale and public sale system - Write script generate art
VITALBAR - BOOKING CLINICAL APPLICATION
Remote
2020 - 2022
- System design - Develop User Interface and APIs - Implement payment system with Stripe connect account - CI/CD - Build admin CRM dashboard
ONLINE CONTRACT SYSTEM USING BLOCKCHAIN
Self-employed
2019 - 2019
- Analyze and build the system - Build the database - Write smart contract - Develop User Interface
CLICKANDINSTALL - WEBSITE B2C FOR HIRE AND INSTALL HOME ELECTRIC
Remote
2019 - 2020
- Analyze and build the system - Build the database - Develop Admin system with functions CRUD - Work with Squareup payment gateway - Develop User Interface
SUPPLYCHAIN - APP FOR USER CHECK REAL VEGETABLES VIA QR CODE
Self-employed
2018 - 2019
- Analyze and build the system - Build the database - Write smart contract - Develop User Interface

Skills

research
solution
web3
solidity
english
vietnamese