About

Full stack Developer & Senior Blockchain Developer
Hello! This is David Kei, have 8+ years of experience in web and blockchain development. Experienced full stack developer with a strong background in developing award-winning applications for a diverse clientele. 8+ years of industry experience includes programming, debugging, and wireframes.
- As a full stack developer with a strong background in technologies such as React/Next, Vue/Nuxt, Node/Nest, PHP/Laravel,
Python/Django, Solidity, Ethers.js, AWS/GCP, and more, I have demonstrated proficiency in building Web & Blockchain Apps that
interact with backend APIs for service provisioning.
- My experience includes developing reusable components and testing them with Jest, building NPM modules, integrating
socket.io, Pusher for real-time tracking on Google Maps, and working extensively with blockchain technologies such as EVM.
- I am passionate about creating efficient and scalable solutions that meet the needs of my clients while ensuring optimal user
experiences.
Professional Experience
Senior Software Engineer
May 2023 - Dec 2024
goAptive
- Developed Web app interacting with backend APIs to provide pest control service to hundreds of thousands of customers across USA.
- Integrated socket.io to implement the real-time tracking on google map.
- Created the custom calendar and its reputation logic, scheduling functions to provide service.
- Integrated backend and third party APIs to implement aptive service.
- Developed reusable component using react Storybook, test using Jest and published npm package.
- Adjusted conflicts and document to navigate npm package to other team.
React Typescript webpack Storybook Jest Tailwind ES6+ Socket.io google map Okta PHP Laravel
Blockchain Full-stack Engineer
Feb 2021 - Oct 2021
Looksrare
- Built a front-end application for minting and staking NFTs using React and Web3.js.
- Contributed to a contract for NFT registration and redemption with Solidity.
- Created a POC Vue.js front-end platform for an NFT gallery using Moralis and Vue.
- Worked on the token distribution and migration from BSC to Polygon network using BscScan, PolygonScan API, and Solidity.
Technologies: Blockchain, Web3.js, Solidity, Ethers.js, Moralis, React, Vue.js, JavaScript
Full Stack Blockchain Engineer
Feb 2022 - Apr 2023
Admire
- Utilized Vue.js, Nuxt.js, and Quasar frameworks to build the frontend of the NFTmarketplace.
- Implemented the backend using Nest.js, a TypeScript-based Node.js framework.
- Designed and developed RESTful APIs and implemented various endpoints for features like user registration, login, NFT listing, bidding, and purchasing.
- Utilized PostgreSQL as the relational database to store NFTs, user information, transaction history, and other relevant data.
- Connected apis and functionalities with BeaconWallet in tezos network and developed indexer to sync DB and tezos network with Python.
Node Nest PostgreSQL Vue/Pinia Nuxt Quasar AWS RESTful APIs SQL Typescript ES6+ Tezos Beacon Objkt Python Gitlab
Full Stack Blockchain Developer
Oct 2019 - Nov 2021
Looksrare
- Built a front-end application for minting and staking NFTs using React and Web3.js.
- Contributed to a contract for NFT registration and redemption with Solidity.
- Created a POC Vue.js front-end platform for an NFT gallery using Moralis and Vue.
- Worked on the token distribution and migration from BSC to Polygon network using BscScan, PolygonScan API, and Solidity.
Blockchain Ethereum Web3.js Solidity Ethers.js Moralis AWS React Vue.js JavaScript Typescript
Front end Developer
May 2015 - Sep 2019
Holidu
- Integrated Redux and MobX on a number of React-based front-end projects for the better state management of React components.
- Implemented a GraphQL-and-Apollo server for a React-and-Vue.js front-end data query.
- Created a new customized chart library using D3.js and Plotly.js.
- Embedded a Google tag manager and Google Analytics for the website conversion tracking and the user event tracking.
Technologies: PHP Wordpress Laravel Mysql React Vue Responsive Git Test JavaScript ES6 Material UI jQuery CSS AWS
Education & Language
National University of Laos
2011 - 2015
B.E. Software Engineering
Language
English
Japanese
Skills
Services
Contact
Email:
goldone0101@gmail.com
Teams:
live:.cid.abecc0e8069e6d36
Telegram:
https://t.me/codemania
Linkedin:
linkedin.com/in/david-kei-023292242/
Github:
https://github.com/goldoneen