ARCHIVED
This job listing has been archived and is no longer accepting applications.
MisuJob - AI Job Search Platform MisuJob

Sr. Staff Backend Engineer (Ads Tech)

Coupang

Seattle, USA (Seattle) Remote permanent

Posted: December 12, 2025

Interested in this position?

Create a free account to apply with AI-powered matching

Job Description

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-billiondollar 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

As our Staff Software Engineer for Coupang Ads Group, you will be responsible for designing and developing our advertising platform to support Coupang’s fast business growth. Coupang is investing in building a world-class Advertising business where we run relevant ads across our website and Mobile App. We are building the next generation of products and services to fuel Coupang ad business’s future growth by providing self-service advertising capabilities to our Sellers and Suppliers.

We are looking for passionate software engineers to build highly scalable online systems to power our advertisement products. You will be working on search, recommendation, and machine learning technologies and systems to power and enhance our advertisement products. You are responsible for developing low latency, highly available, large-scale services and systems and building APIs for programmatic integrations.

Are you passionate about building low latent and highly scalable distributed services? Are you passionate about building AI-oriented systems and platforms? Do you want to be part of huge opportunities in building a world-class Coupang Advertising business? If so, let’s chat!

What you will do

• Identify opportunities to initiate technical investments and drive milestones within the Ads Serving Platform.

• Design and construct robust, scalable, and efficient distributed ad systems.

• Execute and deliver impactful system solutions that benefit multiple teams in Ads.

• Drive and manage multiple impactful initiatives and projects concurrently.

• Mentor and provide guidance to fellow team members.

Basic Qualifications

• Bachelor's degree in computer science, Electrical Engineering, Math, or a closely related field

• 8 years of experience in backend software development

• Proficiency in Java and the Spring Framework

• Experience working in cloud environments, particularly AWS

• Demonstrated experience in building and maintaining highly available, distributed systems

Preferred Qualifications

• Experience in designing and constructing machine learning-based applications and systems.

• Experience in designing and constructing systems and applications for advertising/search advertising, search, and recommendations.

• Experience in leading cross-team system design and execution.

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 $159,000/year in our lowest geographic market to $351,000/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.

Requisition ID: R0066224

Why Apply Through MisuJob?

AI-Powered Job Matching: MisuJob uses advanced artificial intelligence to analyze your skills, experience, and career goals. Our matching algorithm compares your profile against thousands of job requirements to find positions where you have the highest chance of success. This saves you hours of manual job searching and ensures you only see relevant opportunities.

One-Click Applications: Once you create your profile, applying to jobs is effortless. Your resume and cover letter are automatically tailored to highlight the most relevant experience for each position. You can apply to multiple jobs in minutes, not hours.

Career Intelligence: Beyond job matching, MisuJob provides valuable career insights. See how your skills compare to market demands, identify skill gaps to address, and understand salary benchmarks for your experience level. Make data-driven decisions about your career path.

Frequently Asked Questions

How do I apply for this position?

Click the "Register to Apply" button above to create a free MisuJob account. Once registered, you can apply with one click and track your application status in your dashboard.

Is MisuJob free for job seekers?

Yes, MisuJob is completely free for job seekers. Create your profile, get matched with jobs, and apply without any cost. We help you find your dream job without any hidden fees.

How does AI matching work?

Our AI analyzes your resume, skills, and experience to understand your professional profile. It then compares this against job requirements using natural language processing to calculate a match percentage. Higher matches mean better fit for the role.

Can I apply to jobs in other countries?

Absolutely. MisuJob features jobs from companies worldwide, including remote positions. Filter by location or look for remote opportunities to find jobs that match your preferences.

Ready to Apply?

Join thousands of job seekers using MisuJob's AI to find and apply to their dream jobs automatically.

Register to Apply