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Staff Backend Engineer (Corner Stone Team, Tech Infra)

Location Seattle, USA


Location - Hybrid from Seattle only.


We exist to wow our customers. We know we’re doing the right thing when we hear our customers say, “How did we ever live without Coupang?” Born out of an obsession to make shopping, eating, and living easier than ever, we’re collectively disrupting the multi-billion-dollar e-commerce industry from the ground up. We are one of the fastest-growing e-commerce companies that established an unparalleled reputation for being a dominant and reliable force in South Korean commerce.  

We are proud to have the best of both worlds — a startup culture with the resources of a large global public company. This fuels us to continue our growth and launch new services at the speed we have been since our inception. We are all entrepreneurs surrounded by opportunities to drive new initiatives and innovations. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands-on impact. At Coupang, you will see yourself, your colleagues, your team, and the company grow every day.  

Our mission to build the future of commerce is real. We push the boundaries of what’s possible to solve problems and break traditional tradeoffs. Join Coupang now to create an epic experience in this always-on, high-tech, and hyper-connected world. 


Job Overview

Job Overview: The Coupang Corner Stone team in application infrastructure organization, takes charge of company-wide transaction data storage and common data service layer to materialize e-commerce data for a low latency reading. The Storage and Tools team owns the storage services like Cassandra, Elastic Search, MySQL, Vitess and Clickhouse, providing storage as service through in-house hosted open source technology.

We are looking for software development engineers with Cassandra and Elastic search experience. As a Staff Engineer, you are the tech leader in the team taking charge of system design, implementation, daily operation and guiding the internal team to use our storage services of storage services.


Key responsibilities:

  • Hand on to develop the features to enhance the system availability, disaster recovery and performance enhancement
  • Dive deep into the system and fix complex technical problems.
  • Participate in the daily system operation to address system issues and answer the customer questions.
  • Identify the system reliability and performance issue and propose solutions applying best industry practice.
  • Work with the team manager to define the tech and project road map.
  • Collaborate with other Coupang tech teams to make the service extensible to support business growth
  • Drive communication up to Principal Engineer and Senior director level.
  • Advocate engineer excellence and operation excellence with the team
  • Hire and develop team members with knowledge sharing and high-quality interviews.



  • Bachelor’s degree in computer science, Engineering, or related field
  • Master on Cassandra or Elastic Search usage and operation
  • Familiar with AWS technology
  • Solid system and code debugging skills
  • Deep understanding in service availability, scalability, and latency.
  • Excellent communication skills in English including verbal and written
  • At least 6+ years working experience on software design & development experience on distributed system and experience developing large scale enterprise


Pay & Benefits

Our compensation reflects the cost of labor across several US geographic markets. At Coupang, your base pay is one part of your total compensation.

The base pay for this position ranges from $138,000/year in our lowest geographic market to $309,000/year in our highest geographic market. Pay is based on several factors including market location and may vary depending on job-related knowledge, skills, and experience.

General Description of All Benefits

  • Medical/Dental/Vision/Life, AD&D insurance
  • Flexible Spending Accounts (FSA) & Health Savings Account (HSA)
  • Long-term/Short-term Disability
  • Employee Assistance Program (EAP) program
  • 401K Plan with Company Match
  • 18-21 days of the Paid Time Off (PTO) a year based on the tenure
  • 12 Public Holidays
  • Paid Parental leave
  • Pre-tax commuter benefits
  • MTV - [Free] Electric Car Charging Station


General Description of Other Compensation

“Other Compensation” includes, but is not limited to, bonuses, equity, or other forms of compensation that would be offered to the hired applicant in addition to their established salary range or wage scale.

Coupang is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to actual or perceived race (including traits historically associated with race, including but not limited to hair texture and protective hair styles), color, religion, religious creed (including religious dress and grooming practices), sex or gender (including pregnancy, childbirth, breastfeeding, and medical conditions related to pregnancy, childbirth or breastfeeding), gender identity, gender expression, sexual orientation, ,ancestry, national origin (including language use restrictions), age (40 and over), physical or mental disability, medical condition, genetic information, HIV/AIDS or Hepatitis C status, family status (including but not limited to marital or domestic partnership status), military or veteran status, use of a trained dog guide or service animal, political activities or affiliations, ancestry, citizenship, family and medical leave status, status as a victim of any violent crime, or any other characteristic or class protected by the laws or regulations in the locations where we operate. Coupang is also committed to providing a safe work environment for its employees and its consumers. As a condition of employment, Coupang requires employees to be fully vaccinated against Covid-19, subject to legally required accommodations. If you need assistance and/or a reasonable accommodation in the application of recruiting process due to a disability, please contact us at


Equal Opportunities for All

Coupang is an equal opportunity employer. Our unprecedented success could not be possible without the valuable inputs of our globally diverse team.