Promotion Lee
Full-Stack Developer & Solidity Developer from White Rock, BC, Canada, Canada

Hello, Hiring Manager! I am Promotion Lee. I am so glad to see your company's job description. I am a full-stack developer with 9 years of experience in web and blockchain development.As a...

Hello, Hiring Manager! 
I am Promotion Lee. I am so glad to see your company's job description. I am a full-stack developer with 9 years of experience in web and blockchain development.
As a backend developer, I have a total of 6 years of experience.
As a Node.js dev, I am very familiar with Typescript. 
I have rich experience in developing the backend system of websites/apps with Node.js, Python, and frameworks such as ExpressJS, NestJS, Flask, and Django. According to the client's request, I used several databases such as PostgreSQL, MySQL, and MongoDB. Especially, for managing the relational database, I like to use TypeORM, Sequelize, and Knex frameworks.
I also have experience building the unit test or integration test using Cypress, Mocha/Chai, and Jest frameworks and building the automatic testing system with Jenkins.
I have good experience implementing authorization and authentication with JWT token, OAuth, and Twitter Authentication.
I am familiar with using AWS such as AWS EC2, AWS Lightsail, AWS RDS, AWS DynamoDB, AWS Lambda, AWS ECS, AWS S3, and so on. For code version management, I have used GitHub and bitbucket. I also used Jira or Trello for ticket management.
Developed the Hiring Meeting & Conference Website for graduates with zoom script, Token Swapping Sites, E-Learning Website for Children, Food Delivery and Ride Ordering Service Websites, Air-Conditioning Company Site, NFT marketplace Websites, and so on.
I have 3+ years of front-end development experience with React.js, Material-UI, Tailwind CSS, Bootstrap, JQuery, etc. I supported the responsiveness of the mobile device and created the pixel-perfect UI with UI/UX.
I have also experience in the blockchain space by developing the Defi token, NFT mint, NFT marketplace, staking, airdrop, breeding, and gaming contract with Solidity on Ethereum, Polygon, Avalanche, and BSC. I worked on web3 integration. (e.g. I developed the smart contract event subscribe system to synchronize between the backend or frontend and smart contract.). I have rich experience in the blockchain space for 3 years. 
I think I am an excellent match for your company. 
Thank you.
Best Regards.