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Senior UI Engineer

Mountain View, California Job ID: 2197378


We are looking for people who are passionate about solving complex real-world problems, building world-class solutions, and benefitting millions of lives. At Coupang, developers learn from one another—we share knowledge and spur each other on to come up with great ideas—and move extremely fast to create profound impact together. You will also have the opportunity to tackle large-scale challenges that arise as we grow. This includes building in-house technology, innovating mobile architecture, and advancing possibilities with machine learning and deep learning. With you, we will build a world where our customers ask, “How did we ever live without Coupang?”

Success Profile

  • Team Player
  • Adaptable
  • Inventive
  • Self-starter
  • Problem Solver
  • Goal-oriented
  • Quick-thinking


Job ID 2197378 Date posted  05/28/2020 Location Mountain View, United States

Coupang is one of the largest and fastest growing e-commerce platforms on the planet. We are on a mission to revolutionize everyday lives for our customers, employees and partners. We solve problems no one has solved before to create a world where people ask, “How did we ever live without Coupang?”

Coupang is a global company with offices in Beijing, Los Angeles, Seattle, Seoul, Shanghai, and Silicon Valley. 

Job Overview: 

At Coupang, we are a very metrics driven company.  At the heart of that, is a test and learn (experimentation) culture that drives our decisions.   We run hundreds of experiments on a monthly basis across multiple domains including search, recommendation, order / checkout, payment, growth marketing, pricing, and customer service.  The experiment platform team help enable all of that by providing the necessary framework supporting customer targeting, traffic control, data instrumentation, and real-time reporting.  

As a member of our front-end engineering team at Coupang on the Experimentation Platform Organization, your job is to help engineer a world class user experience while innovating with and implementing ReactJS into our front end stack.

Key Responsibilities: 

We need someone who thinks outside the box, someone who doesn't settle on one solution, and someone who loves challenging coding projects! Our agile environment will enable you to rapidly innovate with the most cutting edge technologies. Some Specific things you'll work on:

  • Be the key stakeholder in implementing ReactJS for new projects 
  • Take full ownership from prototyping to deployment
  • Brainstorming and prototyping on new concepts 
  • Working in a collaborative and open environment where we consider ourselves a family
  • Working with the best talents in the industry (many of our team members coming from Amazon, Google, Facebook, and more!)


  • Bachelors or above degree in Computer Science or related fields
  • Solid programming practices including object-oriented principles and design patterns
  • 3+ years of JavaScript experience
  • 3+ years of professional experience with MVC frameworks like React, Angular, and/or Node
  • Experience with HTML5/CSS3
  • Ability to deep dive into software requirements and to focus on delivering results 


  • Experience with backend API a huge plus


Coupang is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex or gender (including pregnancy, gender identity, gender expression, sexual orientation, transgender status), national origin, age, disability, medical condition, HIV/AIDS or Hepatitis C status, marital status, military or veteran status, use of a trained dog guide or service animal, political activities, affiliations, citizenship, or any other characteristic or class protected by the laws or regulations in the locations where we operate.

If you need assistance and/or a reasonable accommodation in the application or recruiting process due to a disability, please contact us at

Career Path

  • Senior Software Engineer
  • Software Engineering Manager
  • Technical Program Manager
  • Product Manager (Product Owner)
  • Tech Recruiter


Benefits and Rewards

  • Flex Time

  • Open Culture

  • Team Outings

  • Collaboration

  • International Interaction

Our mission is global

Coupang is a global business with offices in Seoul, Shanghai, Beijing, Silicon Valley, Seattle and Los Angeles.

Seoul, Korea

Our Korea office is located in downtown Seoul near Lotte World Hotel and Lotte World Mall.

Shanghai, China

Our office in Shanghai is conveniently situated near to restaurants and gyms, as well as to the Evergreen Hotel and the Chamtime Square Shopping Mall.

Beijing, China

Our Beijing office is located in One Indigo, a Grade A-listed office tower. From our space on the 12th floor, you can take in expansive views of Indigo Park, the Ba River and the Beijing skyline. We are conveniently situated a few steps away from the Indigo Shopping Mall, and parking is easily available.

Mountain View, United States

Our Mountain View office is located in the Silicon Valley area across from the NASA Ames Research and Visitor Center.

Seattle, United States

Our Seattle office can be found in the heart of downtown Seattle near restaurants and tourist attractions such as the Pike Place Market.

Los Angeles, United States

Our office in Los Angeles is located in the Riverside area right next to the Sycamore Canyon Wilderness Park.

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