● Use best practices and technologies to develop large SPAs for various users and platforms.
● Ensure high-quality, performant, and reusable code.
● Perform benchmarking, performance, and security analysis.
● Mentor for 2 - 4 engineers.
● Work closely with the backend teams and product design team to iterate quickly on new features and experiments.

You Must Have
● 2++ years of experience programming with JavaScript, ReactJS, HTML, and CSS.
● Previous product company experience.
● Be able to write clean, performance-centric, reusable, and understandable code with unit tests.
● Experience in responsive web and mobile-first applications.
● Experience in CSS frameworks and tools (like SASS, LESS, and Bootstrap).
● Understanding REST APIs, and client-server communication.
● TOEIC 800++ or equivalent.

Extra Bonus
● Strong grasp of JavaScript, Node.js, including OOP and design patterns.
● Familiarity with ECMAScript 6, TypeScript, and frontend tools like Webpack, npm, vite,...
● Experience in building JavaScript SDKs, Web Widgets, and unit testing.
● Expertise in web optimization, security, and user behavior tracking using tools like Mixpanel and Google Analytics.

● Hybrid working model: Enjoy the flexibility to work remotely for 2 days per week while fostering a collaborative environment to achieve outstanding results.
● 21+ paid leave days per year: National holidays, sick leave, paid leave, and an additional “ZTO Day” for each month without a national holiday.
● Amazing team: Opportunity to work in a dynamic and innovative environment with a team of talented professionals.
● Competitive salary and benefits package: There is no upper limit on how much you can earn. It’s all based on your performance and contributions.
● Best working environment: A typical Silicon Valley-style working environment with a focus on collaboration, creativity, and excellence.
● Gadgets for work: MacBook, external displays. Everything you need for your job is fully provided.
● Training and personal development: Tuition and textbook reimbursement for approved work-related courses; free video training programs from Udacity, Udemy, and The Great Courses Plus; company library with the newest technology and business books.
● Flexible working hours: Enjoy flexibility without strict timekeeping; our core working hours are from 10 AM to 5:30 PM (Monday to Friday).
● Free daily lunches and dinners: Enjoy fresh meals of your choice delivered straight to the office.
● Others: Office happy hours, participating in self-organized clubs like sports, games, algorithms, piano, etc.

● Training and personal development
● Flexible working hours
● Free daily lunches and dinners