Staff Frontend Engineer

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 Micro Frontend Platform team is responsible for building highly scalable, customer-facing user interfaces that power critical experiences across Coupang’s ecosystem. This is a pure frontend engineering role focused on delivering high-quality, performant UI for large-scale, consumer-facing applications. The team works on systems that are directly exposed to end users, requiring strong emphasis on responsiveness, low latency, and seamless user experience. These applications operate at high scale and are critical to delivering intuitive and engaging customer journeys across web platforms. As a Staff Frontend Engineer, you will contribute to building robust UI architectures, ensuring high performance and scalability, and delivering polished user interfaces that directly impact customer experience while collaborating closely with product and backend teams. What You Will Do Build scalable, high-performance user interfaces for customer-facing applications using React and modern frontend frameworks Develop reusable components and modular UI architectures, ensuring consistency and maintainability across large systems Collaborate cross-functionally to deliver intuitive, seamless user experiences for high-impact B2C products Optimize for low latency, fast rendering, and responsiveness in high-traffic, large-scale environments Own end-to-end frontend systems, driving performance, reliability, and engineering excellence Deliver customer-first experiences at scale, continuously improving UI quality and functionality for millions of users Basic Qualifications At least 7–8+ years of frontend engineering experience Strong proficiency in JavaScript and modern frontend frameworks like Vue.js or React.js Experience building customer-facing (B2C) web applications at scale Strong understanding of UI development principles, component-based architecture, and reusable design systems Experience working with Node.js for frontend/backend integration layers Proven experience delivering high-performance, low-latency user interfaces Experience optimizing frontend performance (rendering, loading time, responsiveness) Strong understanding of browser fundamentals, networking, and client-side performance tuning Experience building scalable frontend systems in high-traffic environments Strong problem-solving skills with attention to UI quality and performance Experience collaborating closely with backend, product, and design teams Preferred Qualifications Experience with Vue.js or multiple frontend frameworks in addition to React Deep expertise in frontend performance optimization at scale (large user traffic systems) Experience building highly interactive, customer-facing applications in B2C envi