Coupang
e-commerce
StaffBackendEngineer
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“Staff Backend Engineer at Coupang. Skills: backend systems design, distributed systems, event-driven architectures, high-throughput systems, scalability, reliability, correctness, Java, AWS. Design and build scalable backend systems for pricing, billing, and usage metering. Develop event-driven architectures to process large volumes of real-time usage and infrastructure data”
Industry & Context.
problem-solving skills with focus on efficiency and correctness
What They're Looking For.
Must Have
8+ years of backend engineering experience, proficiency in Java-based backend development, Experience working with cloud platforms (AWS preferred), Experience building event-driven architectures and distributed systems, Experience designing and scaling high-throughput systems handling large volumes of events, Experience working with AWS-managed databases (e. g. , Aurora or similar OLTP systems), Familiarity with containerized systems and Kubernetes ecosystems, Experience building real-time systems (e. g. , usage tracking, billing, metering pipelines), understanding of system design, scalability, and reliability principles, problem-solving skills with focus on efficiency and correctness, Experience collaborating with cross-functional teams
Nice to Have
Experience with Golang for backend development, Deep expertise in AWS ecosystem (compute, storage, distributed services), Experience designing large-scale event processing systems (hundreds of millions to billions of events), Experience building cloud commerce platforms, billing systems, or pricing engines, Familiarity with real-time usage metering, invoicing, or revenue systems, Experience working with Kubernetes-based observability signals (logs, infra events, metrics), Exposure to high-growth systems scaling from early stage to large production scale, Experience building multi-tenant, customer-facing cloud platforms
What You'll Do.
Design and build scalable backend systems for pricing
Develop event-driven architectures to process large volumes of real-time usage and infrastructure data
Build systems that provide real-time visibility into customer usage and billing metrics
Design components for rate cards
and multi-currency transactions
Work on distributed systems that support exponential growth in customers and usage events
Ensure high levels of accuracy
and scalability in revenue-critical systems
Translate complex business requirements into scalable architecture and distributed systems
Design and build low-latency
high-throughput backend services
How You'll Work.
Team & Collaboration
Collaborate with product, infrastructure, and platform teams to build cloud-native commerce capabilities; Experience collaborating with cross-functional teams
Full Job Description
Company Introduction 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 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 Commerce team is responsible for building next-generation cloud commerce systems that power pricing, billing, usage metering, and revenue generation for Coupang’s cloud platform. This team operates as the backbone of the cloud business, enabling accurate pricing, discounting, invoicing, and real-time usage visibility for customers. The systems are highly scalable and event-driven, ingesting and processing massive volumes of data—including customer usage events and Kubernetes-driven infrastructure signals. As the platform scales from early-stage adoption to large-scale rollout, it is expected to handle exponentially growing workloads, potentially reaching hundreds of millions to billions of events, whi
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