WeiChong Cen

404-***-**** EI Monte, California adm9u8@r.postjobfree.com

WeiChong is a full-stack engineer with over 9 years of experience in web development, managing all aspects of the development process. He's worked on 30+ projects and solved complex business problems in various industries including marketing, healthcare, eCommerce, real estate, and car insurance. WeiChong has consistently saved costs while increasing profits. He's ready for an opportunity to use his skills to grow your revenue exponentially.

TECHNICAL SKILLS

Programming Languages: HTML5/CSS3/Sass/Less, Javascript, PHP, TypeScript, Solidity, Web3

Software Frameworks: React.js, React Native, Vue.js, Node.js, Express, Laravel, Codeigniter, Truffle

Database: MySQL, PostgreSQL, MS SQL, MongoDB, Firebase, AWS

Environments: Scrum/Agile, TDD/BDD, Git, Jira/Bitbucket, Trello, Postman

PROFESSIONAL EXPERIENCE

BrainTrust / FullStack Developer

Oct 2019 – May 2021 : Remote

● Built a number of React-based front-end projects with React trending technologies such as React hooks, HOCs, lazy loading, and more.

● Implemented UI layouts with Ant Design, Material-UI, and styled components.

● Integrated Redux-saga, MobX, Immer.js, and Context API for the state management and Formik and Yup for validation.

● Migrated Gatsby and GraphQL for improving the page load speed, server-side rendering, and code splitting.

● Architecting and developing complex blockchain solutions

● Written smart contracts for ERC20, ERC223, ERC721, ICOs, Vesting, MultiSig, Tokenization etc

● Developed more than 10 web wallets (custodial and non-custodial)

Self Employed / Software Engineer

Apr 2017 – Oct 2019 : Remote

● Built and enhanced 10+ main Web application UI using React, Redux, Redux-Saga, Thunk, Hooks, Styled Component, Material-UI, Story Book and etc

● Wrote the back-end API endpoints with Express, integrated AWS S3, and email service, and used Elasticsearch for the full-text search engine.

● Developed GraphQL queries and mutations to change APIs

● Fixed serious bugs and issues on the product versions and reviewed pull requests.

● Collaborated with other developers in a large, distributed codebase

Webflow / Software Engineer

Jan 2016 - Mar 2017 : Remote

● Employed Agile methodology with ideation, scrums, and sprints to achieve MVP, add features and fix bugs.

● Lead implementation of RESTful APIs for three published Web and Mobile applications.

● Pioneer API development for a growing number of web applications.

● Implemented requested features and wrote unit and integration tests

Able IT / Software Engineer

March 2012 - Dec 2015 : Remote

● Created front-end web portal tools to provide diverse information with Vanilla JavaScript and jQuery.

● Built the REST APIs for the back end using Node.js and Express.js.

● Maintained and upgraded the front-end web app for their management system using AngularJS.

● Used Webpack and NPM to set up an entire development environment and Karma, Jest, and Mocha for unit and E2E testing.

● Implemented and integrated DevOps procedures for AWS infrastructure (S3, Lambda, CF, and so on).

EDUCATION

2007 – 2011 Tsinghua University / Bachelor’s degree in Computer Science

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