React Staff Engineer

• Design, code and maintain new features and products for the web app
• Work on core features of the React app such as overall architecture, React platform updates, design and performance
• Build main features that support the platform API such as order management, USPS compliance logic, label rendering, pricing infrastructure
• Design the platform’s integration with marketplaces and Warehouse Management Systems to synchronize orders and shipments
• Clearly communicate with founders, other engineers, PMs and customers
• Write unit and regression tests
• Help build a team of junior developers

• +7 years of overall development experience
• At least 5 years of web development experience
• At least 2 years of React experience
• Good English language skills
• Proficiency with Javascript, HTML, CSS and Node
• Solid knowledge of React and Redux principles
• Experience with modern web/UI development tools (Webpack, Gulp, etc.) 

Additional Note.

• Before applying, please make sure you could answer the following questions without peeking at stackoverflow and/or consulting chatgpt. Similar questions will be asked during the technical interview.
• How do you implement a singleton in Javascript
• Show an example of inheritance using ES5 (prototypical) and ES6 (OO)
• Explain React middlewares and provide a detailed explanation about why Redux Saga/Thunk were created for
• Explain what the reduce() function
• Describe advantages and disadvantages of Typescript
• How would you implement pagination (front-end and back-end support)
• What is a closure and how it works in Javascript ***not open to consulting companies and freelancers
• Offer: 2000 – 2200$ gross
• Remote 100%
• Over lap time: 4 hours per day, 8-10ham and 8-10hpm (vietnamtime). 4 hours flexibletime.