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Staff Software Engineer (Seller System)

Seattle, Washington Job ID: 3105791


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 3105791 Date posted  05/04/2021 Location Seattle, United States

Company Introduction

Coupang is reimagining the shopping experience with the goal of wowing each customer from the instant they open the Coupang app to the moment an order is delivered to their door.  Powered by an outstanding end-to-end e-commerce and logistics network and a fanatical culture of customer centricity, Coupang has broken tradeoffs around speed, selection and price. Today, we provide exceedingly fast shipping speeds on millions of items including fresh groceries, delivered within hours nationwide, 365 days a year. We are doing this for millions of consumers in Korea, one of the world’s largest and fastest growing e-commerce markets. Korea is currently the 5th largest e-commerce market in the world.

Role Overview

The Seller Systems team is responsible for enabling cross-border shopping experience by fulfilling the orders from USA, China and EU to customers in Korea within three business days. The Seller Systems team is your opportunity to see if you have what it takes to create superior cross-border e-commerce experience. We are looking for a rock-star engineer to support growth and global expansion for Seller Systems.

In this role, you will partner with business and partner engineering teams to develop a Global Tech services that will have direct and measurable impact on growth. You will work with 3PL logistics partners and Warehouse management software vendors to ensure our services are integrated to provide a seamless experience.  You will help support new fulfillment models while focused on delivering the best customer experience. And our agile environment will enable you to rapidly innovate with the most cutting-edge technologies. 

What You Will Do

  • Building highly scalable, available, reliable, fault-tolerant and manageable services 
  • Working with strategic domains such as inventory, ordering, logistics and supply chain management 
  • Understands team software architecture. Can make technical trade-off decisions at system level
  • Able to work on any components, applications, or services that team owns 
  • Able to translate business requirements into technical solutions 
  • Automate and simplify team’s development and operations processes 

Basic Qualifications

  • Bachelor’s degree in a quantitative field - Computer Science, Mathematics, Engineering or related fields 
  • 6+ years of experience building distributed systems using Java, SQL/NoSQL
  • Good programming practices including solid object-oriented principles and design patterns 
  • Strong understanding with RESTful JSON API design and integration 
  • Ability to deep dive into software requirements and to focus on delivering results  

Preferred Qualifications

  • Experience taking a leading role in building complex software systems that have been successfully delivered to customers 
  • Experience communicating with users, other technical teams and senior management to collect requirements, describe software product features, technical designs and product strategy 
  • Experience working backwards from the customer and delivering innovative, simple solutions 
  • One who has been exposed in a dynamic startup or startup like environments preferred 
  • One who has experience at e-commerce or SaaS companies 
  • One who has ability to think outside-the-box and challenge conventional wisdoms 

Coupang is an Equal Opportunity Employer

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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