Senior Software Engineer

Posted 2 Days Ago
Seattle, WA, USA
In-Office
114K-196K Annually
Senior level
eCommerce
Building the future of eCommerce. We push the boundaries of what’s possible to solve problems!
The Role
Design, develop, and operate large-scale backend and data systems to support third-party seller experiences. Build scalable data pipelines and infrastructure, ensure high availability, own projects end-to-end, and collaborate with product and technical teams to drive growth and performance.
Summary Generated by Built In

Company Introduction 

We exist to wow our customers. We know we’re doing the right thing when we hear our customers say, “How did I 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.

 

Role Overview


The Marketplace Growth Engineering team is dedicated to the success of third-party sellers on our platform. Our mission is to build the end-to-end, scalable, and intelligent systems that empower sellers to thrive. We create the tools, services, and data platforms that form the backbone of the seller experience, from intuitive user interfaces to high-performance backend processing. 
 
The ideal candidate is a backend or full stack engineer with experience in building scalable data systems and excellent problem-solving skills.

 

What You Will Do

 

  • Design, develop, and automate large-scale, high-performance systems to drive business growth and enhance product experiences. 
  • Build scalable data infrastructure and pipelines using best-in-class software engineering practices. 
  • Take full ownership of projects, ensuring high-quality development and operational health. 

Basic Qualifications


  • Bachelor’s degree in Computer Science, Electrical Engineering, Math, or a closely related field
  • 4 years of professional software development experience
  • Experience working in cloud environments, particularly AWS
  • Demonstrated experience in building and maintaining highly available, distributed systems

Preferred Qualifications

  • Strong expertise in open-source frameworks and technologies, including Spring, AWS, APIs, NoSQL, and Big Data technologies such as Kafka, Elasticsearch, Iceberg, and ClickHouse. 
  • Exceptional coding skills, with a focus on data structures, algorithms, problem-solving, refactoring, performance optimization, and complexity analysis. 
  • Strong communication skills, with the ability to gather requirements and collaborate with product and technical teams.
  • Experience designing, implementing, and maintaining distributed systems at scale, making trade-offs based on business demands.
  • Comfortable working in an agile, fast-paced environment. 

 

Pay & Benefits

Our compensation reflects the cost of living 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 $114,000/year in our lowest geographic market to $196,000/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 Paid 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.   

 

Recruitment Process

  • Application Review - Phone Interview - Onsite (or Virtual Onsite) Interview – Offer
  • The exact nature of the recruitment process may vary according to the specific job and may be changed due to scheduling or other circumstances.
  • Interview schedules and the results will be informed to the applicant via the e-mail address submitted at the application stage.

 

Details to Consider

  • This job posting may be closed prior to the stated end date for application if all openings are filled.
  • Coupang has the right to rescind an offer of employment if a candidate is found to have submitted false information as part of the application process.
  • Those eligible for employment protection (recipients of veteran’s benefits, the disabled, etc.) may receive preferential treatment for employment in accordance with applicable laws.

Privacy Notice

  • Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located below: https://www.coupang.jobs/privacy-policy/​

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, or 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 reasonable accommodation in the recruiting process due to a disability, please contact us at [email protected]

 

Job Requisition ID: R0073279

Skills Required

  • Bachelor's degree in Computer Science, Electrical Engineering, Math, or closely related field
  • 4 years of professional software development experience
  • Experience working in cloud environments, particularly AWS
  • Experience building and maintaining highly available, distributed systems
  • Strong expertise in Spring framework
  • Experience with Kafka
  • Experience with Elasticsearch
  • Experience with Iceberg (Apache Iceberg)
  • Experience with ClickHouse
  • Experience with NoSQL databases
  • Experience designing and building APIs
  • Familiarity with Big Data technologies and pipelines
  • Exceptional coding skills in data structures, algorithms, performance optimization, and complexity analysis
  • Strong communication and collaboration skills with product and technical teams
  • Comfortable working in an agile, fast-paced environment

Coupang Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Coupang and has not been reviewed or approved by Coupang.

  • Healthcare Strength Benefits are described as robust, including medical, dental, vision, disability, life, mental health, and transgender healthcare. Some locations also offer on-site or virtual health screenings that enhance preventive care access.
  • Retirement Support Financial programs include a 401(k) with company matching and an employee stock purchase plan alongside performance bonuses. Feedback suggests these elements provide a structured foundation for long-term savings and wealth building.
  • Leave & Time Off Breadth Paid time off is described as generous with accrual increasing with tenure, complemented by company-paid holidays and parental leave. Flexible work arrangements in some roles further support time away when needed.

Coupang Insights

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The Company
HQ: Seoul
70,000 Employees
Year Founded: 2010

What We Do

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.

Why Work With Us

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. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands-on impact.

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