William Wang
Verified Expert in Engineering
Software Developer
Kunming, Yunnan, China
Toptal member since December 12, 2016
William is a full-stack developer who has worked as a freelancer, senior developer, and CTO for local IT companies. He's developed and completed many web and mobile projects. He mainly uses PHP or Node.js for the back end and React and React native for the front end. William is a passionate learner who picks up things quickly, loves coding, and truly enjoys the perks of freelancing.
Portfolio
Experience
- MySQL - 8 years
- PHP - 8 years
- JavaScript - 8 years
- ECMAScript (ES6) - 5 years
- React Native - 5 years
- HTML5 - 5 years
- React - 5 years
- Laravel - 3 years
Availability
Preferred Environment
Git, ECMAScript (ES6), Laravel, PHP, Linux, MacOS, Visual Studio Code (VS Code), React, React Native
The most amazing...
...project I've developed was an advertisement distribution platform for a one-man company that helped him earn over $100,000 per month.
Work Experience
React Native Developer
Theya Inc.
- Served as the lead front-end developer for the Bitcoin wallet app, utilizing React Native to implement the user interface, working on the front-end side of crypto features, API integration, fixing bugs, etc.
- Enhanced and optimized the app's performance through continuous improvements, maintaining Webpack configurations, and adding new functionalities.
- Contributed to the back-end development using Fastify and PostgreSQL within a Node.js environment, implementing various features and troubleshooting issues.
- Developed a web interface for hardware wallet integration, built the main site using Next.js, and implemented features for wallet initialization and transaction signing on web pages.
React/React Native Developer
Shiftsmart Inc.
- Developed the initial version of our employer app based on React Native and MobX and incorporated features, fixed bugs, and optimized the app for four years. The company has two main apps, one for the worker and one for the employer.
- Refined and optimized our worker app, a React Native app, added features, resolved bugs, maintained webpack configurations, and more.
- Boosted our main web platform system using Jira as a task tracking tool, created features, eliminated bugs, improved optimization, sustained SSR and CSR configurations, etc.
- Built a React Native form generator library. It uses JSON as a form schema definer and automatically generates the form interface, client-side validation, and form submission logic.
Co-founder and CTO
Gezher Technology
- Co-founded this company whose chief product is farm management software and managed the business's technical aspect.
- Established a reliable and flexible working process for the product and technical team.
- Collaborated with the product manager to design the product prototype and make all product decisions.
- Managed the developer team to build the product, its maintenance, and iterations.
Senior Developer and CTO
3Rong Technology
- Created a wedding hotel booking website that became the top hotel booking website for the local area.
- Developed a CRM system for sales to manage their client.
- Built a car rental platform including a website, mobile website, and mobile app for both users and merchants, including a WeChat micro-site.
- Architected a P2P investment website, mobile site, and mobile app.
- Created the company's internal process: product design, code architecture, coding, testing, and deployment.
Freelance Web Developer
Freelance Work
- Finished hundreds of projects, including many web and mobile projects. Received some very good testimonials from my customers and established a long-term relationship with some of them.
- Built many WordPress sites, including many custom-developed themes and plugins.
- Developed many web and mobile projects, mainly PHP and MySQL projects.
- Integrated APIs like the PayPal payment gateway API, Google Maps API, OAuth API, social media APIs, and others for many client sites.
- Worked remotely on many long-term projects, building and maintaining them, using SSH login and automatic deploy script to manage the code and server.
Experience
FutureFarm App
FutureFarm has two parts: an app and website.
The app is built on React Native technology and uses MobX to manage the state. The web part is based on Laravel and uses React for the front end.
Advertisment Distribution System
Note Anywhere Chrome Extension
https://chrome.google.com/webstore/detail/note-anywhere/bohahkiiknkelflnjjlipnaeapefmjbhHasLockers Content Locking System
Node.js and Markdown-based Blog
Education
Bachelor's Degree in Business Administration
Southwestern University of Finance and Economics - Chengdu, China
Certifications
AWS Solutions Architect Associate
Amazon Web Services, Inc.
Skills
Libraries/APIs
React, jQuery, Node.js, Backbone.js, Vue, MooTools, Socket.IO, MobX
Tools
Git, Gulp, Webpack, Apache, NPM, Grunt, Composer, JSX, Sublime Text, Babel, NGINX
Languages
HTML5, CSS3, ECMAScript (ES6), JavaScript, PHP, SCSS, SQL, Less, TypeScript, HTML, CSS, Python, Ruby, GraphQL, Markdown
Frameworks
React Native, Lumen, Laravel, Slim, PHPUnit, Jest, Express.js, CakePHP, Redux, ThinkPHP, Chrome, Next.js
Platforms
WordPress, Linux, MacOS, Firebase, Amazon Web Services (AWS), Visual Studio Code (VS Code), Docker
Storage
JSON, Memcached, MySQL, MongoDB, Redis, SQLite
Paradigms
Model View Controller (MVC), Agile Software Development, PHP Standards Recommendations (PSR), Functional Programming, Model View Presenter (MVP), REST
Other
Front-end, Bootstrap UI, Ajax, Front-end Development, Software Development, Full-stack, Cordova, Bitcoin, WebSockets, DOM, PIP, Machine Learning, SOAP, HTTP, CPA, WYSIWYG Web Builders, Business Administration
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