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Senior Staff Back-end Engineer, Storage & Monitoring Platform



Software Engineering
Seattle, WA, USA
Posted on Friday, July 21, 2023


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 entrepreneurial 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

As part of Coupang’s Tech Infrastructure organization, Storage Platform team manages company-wide RDBMS, NoSQL, distributed storage, and caching services across all business domains. We are responsible for building highly reliable and scalable storage and database solutions for the company’s growing applications and services. In the past few years, we successfully scaled our platform to sustain peak time volume at multi-million QPS (per service), and reliability above 99.99%. As our business continues to grow tremendously, we need to move the platform to the next level of reliability and scalability.

We are looking for engineers with solid, hands-on background in large-scale distributed systems, in-depth development experience in one or several modern database systems, to fill the role of Senior Staff Engineer. In this role, you will help some of the fast-growing services solve their database/storage scalability and reliability problems. You will also work on architecting and designing extremely highly available (5~6 nines) database systems in distributed and cloud environment. If you feel passionate about building massive online database systems that can scale to hundreds of nodes to serve 10s of millions of TPS, you share the same passion with us, and we welcome you reach out to us.

What You Will Do

  • Manage and maintain company-wide storage infrastructure
  • Design, develop and implement software that improves storage infrastructure availability, stability, scalability and performance with smooth operations.
  • Work closely with Coupang internal and external Customers and wow them with our cutting-edging products.
  • Automate operations and accelerate responses to common service conditions.
  • Design, develop and implement software that improves the stability, scalability, availability, and latency of the storage platform (NoSQL and RDBMS).
  • Solve problems occurring with our production systems, and build solutions and automation to prevent them from reoccurring.
  • Architect and design storage subsystem for mission critical services with extremely high availability.
  • Design software solutions such as database SDKs and custom libraries to solve complex business problems.
  • Collaborate with and influence various teams and organizations across the company on design principles of large-scale storage systems.
  • Organize and drive architecture and design review on database/storage subsystems.
  • Explore and recommend technologies to solve database reliability and scalability problems in various business domains.
  • Help develop Storage Platform’s roadmap and strategy.
  • Be hands-on and lead the development of next generation in-house storage solution.
  • Provide technical leadership and mentorship to other engineers on the team.



  • Solid software development background in large scale, mission critical systems.
  • Programming with at least two of the primary languages (Java, Python, Go, C/C++, etc)
  • Experience with various types of database (MySQL, PostgreSQL, Redis, MongoDB, DynamoDB, etc.). Deep understanding of at least one of them.
  • Working knowledge on one of distributed systems like Kafka, Cassandra, HBase, ElasticSearch, etc.
  • Familiar with cloud services, AWS preferred.
  • Familiar with performance monitoring, DevOps and SRE concepts.
  • BS in Computer Science, EE, or other engineering fields. MS preferred.
  • Experience leading projects using agile methodologies.
  • Architect/manager experience in the areas of technical leadership and engineering projects.

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 $159,000 /year in our lowest geographic market to $324,000/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

“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