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Staff Backend Engineer (FSP)

Coupanginternal

Seattle, USA (Seattle) Remote permanent

Posted: January 8, 2026

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Quick Summary

We're looking for a Staff Backend Engineer to join our team in Seattle, USA, and help us build a scalable and efficient backend system.

Job Description

Please complete the attached Internal Transfer Request Form and submit.

Please make sure to apply with your Coupang e-mail address.

Staff Backend Engineer - Foundational Systems and Platforms (FSP)

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 commerce industry from the ground up. We are one of the fastest-growing retail companies that established an unparalleled reputation for being a leading 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.

Job Overview:

This role is in Foundational Systems and Platforms (FSP) organization in Global Operations Technology. Our charter includes Inventory Platform that managed inventory for Coupang and Fulfillment Execution system that orchestrates the complete journey of delivering a customer's order to their doorstep.

We are looking for a Staff engineer to help us build our next generation systems in FSP organization. The candidate should have strong backend engineering experience that includes building highly scalable systems, using workflow based orchestration solutions, actor-based and CQRS frameworks. Experience in AWS eco system and platform solutions like temporal and Akka will be preferred.

Candidate should have proven track record in delivering mission critical systems that supports operations and customers. This requires maintaining a high bar in Operational Excellence (OE) and working closely with our operations and product stakeholders.

Key Responsibilities:

• Independently come up with quality architecture and design of systems for new microservices and machine learning pipelines.

• Functionally decompose complex problems into simple, straightforward solutions.

• Possess expert knowledge in performance, scalability, enterprise distributed architecture, and engineering best practices.

• Assist in the career development of others, actively mentoring individuals and the community on advanced technical issues and helping managers guide the career growth of their team members.

• Exert technical influence over multiple teams, increasing their productivity and effectiveness by sharing your deep knowledge and experience.

Qualifications:

• Bachelor's degree and/or Master’s degree in Computer Science or equivalent.

• 7+ years of software engineering experience, including Java.

• 7+ years of experience leading large-scale projects.

• 7+ years of knowledge of emerging platforms, Java, C/C++, operating system principles, and programming best practices.

• Strong understanding of backend scalable software architecture, distributed systems, and message-oriented architecture.

• Experience with full-stack, high-scale production systems with fault-tolerance and monitoring.

Req: R0068651

• Experience with building stream-processing systems, using solutions such as Kafka and Spark-Streaming.

• Data caching and storage techniques and creating distributed software architectures with horizontal scale.

• Operationalizing software in a large-scale environment with high availability requirements.

Preferred:

• Experience with scalable distributed systems and understanding of machine learning algorithms.

• Experience in the eCommerce domain involved in supply chain systems around Inventory and Promise.

• Software development experience with Java, Scala, Python, NoSQL and Distribute Compute

• Experience with AWS; Java language would be a plus.

Please complete the attached Internal Transfer Request Form and submit.

Please make sure to apply with your Coupang e-mail address.

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