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Coupang

Sells goods online with its own overnight delivery

Staff Back-end Engineer - Monetization

Backend EngineeringPosted on Nov 13
Full-timeSeoul, South KoreaNo salary listedIn-person

About the Job

Requirements

  • Hold a bachelor's degree or have equivalent practical experience, and have at least 8 years of experience in large-scale backend application and distributed-systems engineering.
  • Have expertise in designing, scaling, and operating low-latency, high-throughput distributed systems, including performance profiling, resolving bottlenecks, and optimizing cost-performance tradeoffs.
  • Demonstrate proficiency in backend engineering with at least one of Go, Java, JavaScript, or Node.js.
  • Have commercial operation experience with modern cloud infrastructure such as AWS or GCP and distributed storage or streaming technologies such as Kafka, Redis, or microservices.
  • Have successfully led complex, uncertain cross-functional projects from planning through commercialization and mentored engineers.
  • Have strong oral and written communication skills to influence technical and business stakeholders.

Responsibilities

  • Design and own the long-term technical strategy and architectural roadmap for the advertising platform across video ads, interactive or shopping ads, ad serving, and tracking, while leading technical alignment across monetization areas such as payments, subscriptions, promotions, and ticketing.
  • Design, develop, and optimize mission-critical, ultra-low-latency backend system architecture for ad delivery, real-time impression tracking, and monetization workflows at large traffic scale.
  • Develop and lead cross-team technical solutions for seamless real-time ad insertion in high-concurrency business scenarios, including peak live-sports broadcasts.
  • Provide technical leadership across the engineering organization by mentoring senior and mid-level engineers, leading architecture reviews, and raising standards for code quality, system reliability, and operational excellence.
  • Collaborate with stakeholders across Product, Ad Operations, Finance, and Legal to implement complex business goals in stable technical architectures that meet compliance requirements.
  • Use and introduce AI technologies to automate work and improve team-wide development productivity, code quality, and delivery speed.

Desired Qualifications

  • A master's or PhD in computer science or a related technical field.
  • Extensive commercial implementation and operation experience with large-scale ad-tech systems, including video ad serving, SSAI/CSAI, VAST/VMAP, real-time bidding (RTB), large-scale impression or click tracking, and programmatic advertising.
  • Experience designing architecture for e-commerce or core monetization systems such as payment gateways, billing or subscriptions, promotion engines, or high-concurrency ticketing platforms.
  • Experience designing and troubleshooting complex client-server integrations and ad SDK architecture in close collaboration with iOS, Android, or Smart TV engineering leads.
  • Ability to communicate effectively in English in a business environment.

About the Company

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Coupang

Sells goods online with its own overnight delivery

Coupang runs one of South Korea's largest online stores, selling groceries, electronics, household goods and fashion to consumers and small businesses. Rather than relying on outside carriers, it delivers most orders through its own warehouses and drivers, and its Rocket Delivery service brings millions of items to doorsteps overnight or the same day. Shoppers order through the Coupang app or website, and the company earns money from its own retail sales, commissions and fulfillment fees from outside sellers, and a paid membership. Coupang was founded in Seoul in 2010 and is headquartered in Seattle, with most of its operations and staff in South Korea.

Company size
10,001+
Company stage
IPO
Headquarters
Seattle, WA
Founded
2010

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