Senior Staff Engineer - Ads Data Platform; Seattle or Mountain View

Role Overview:

Ads data platform team is a key team in the Ads foundation organization. Help us build the data engine behind Coupang Ads. Our team provides the foundational platform that manages and serves all data used in our ads-serving pipeline.

We’re looking for backend experts passionate about big data and high-concurrency systems. You’ll be tasked with building a scalable, resilient, and low-latency infrastructure from the ground up, turning massive data streams into real‑time business impact.

• Architect and scale high‑throughput data processing pipelines and serving infrastructure critical to real‑time ad delivery.
• Engineer our next‑generation data platform
  , focusing on self‑service capabilities that empower cross‑functional teams to deploy data into production with minimal friction.
• Bridge the gap between business strategy and technical execution
  , translating complex ads logic into highly distributed, efficient, and resilient system architectures.

• Bachelor's degree in computer science, Electrical Engineering, Math, or a closely related field
• 8 years of experience in backend software development
• Experience working in cloud environments, particularly AWS
• Demonstrated experience in building and maintaining highly available, distributed systems
• Proven track record of taking ownership and successfully delivering results
• Experience building ads serving system
• Ability to clearly and concisely communicate with technical and non‑technical stakeholders across all levels of the organization
• Ability to work in multi‑cultural, cross‑functional team
• Experience building highly scalable and low latency systems in a fast‑paced, team‑oriented environment
• Experience leading a project of building large‑scale data serving platform
• Proficiency in Java and the Spring Frameworks

• Ability and desire to drive solid design work on multi‑threaded, multi‑process, distributed system
• A passion to explore, improve, automate and optimize distributed systems and tools
• Proven ability to lead and collaborate in cross‑functional, fast‑paced environments
• Ability to think outside the box and challenge conventional wisdom
• Experience with advertising systems/Search advertising/Advertising Marketplace/Display advertising/Ad server
• Experience working with AWS (Amazon Web Services)
• Familiarity with Agile development practices, including code reviews, testing, and CI/CD pipelines
• Experience managing mission‑critical services with high throughput and low latency
• Experience in fast‑paced environment
• Experience with Spark, Hive, Redis, Kafka
• Strong communication skills for interfacing with technical teams, business stakeholders, and end users

The base pay for Senior Staff position ranges from $174K per year to $299K per year. The base pay for a Staff position ranges from $164K to $282K per year. Pay is based on several factors including market location and may vary depending on job‑related knowledge, skills, and experience.

• Medical/Dental/Vision/Life, AD&D insurance
• Flexible Spending Accounts (FSA) & Health Savings Account (HSA)
• Long‑term/Short‑term Disability
• Employee Assistance Program (EAP)
• 401K Plan with Company Match
• 18‑21 days of Paid Time Off (PTO) a year based on the tenure
• 12 Paid Holidays
• Up to 6 weeks of Paid Parental leave
• Pre‑tax commuter benefits
• 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 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

Job Requisition : R0073686