Staff Back-end engineer [Promise Platform]

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: As our Staff Backend Engineer for the Inventory and Promise Platform team, you will empower Coupang Fulfillment & Transportation to operate faster, better, and cheaper through modern, reliable, and data-driven technologies. In this role, you will be a key contributor to an area of the business that is rapidly expanding and is recognized for its Rocket Delivery service. The team already builds services that process thousands of requests per second, generate trillions of won annually in business decisions, and manage business rules that move millions of products. We are responsible for improving order coordination with technology to deliver products to millions of online shoppers. The role will involve technical leadership on rearchitecting and building a brand new Inventory and Promise platform which powers customer’s shopping experience by giving inventory visibility to the customer to be able to order and gives out promised delivery dates for their order. Additionally, the platform also powers fulfillment orchestration once an order is placed. Key Responsibilities: Serve as a technical lead on our most demanding, cross-functional projects involving Inventory and Promise. 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 in Computer Science, Electrical Engineering, Math, or a closely related field 6 years of experience in backend software development Demonstrated experience in building and maintaining highly available, distributed systems Preferred: Experience with scalable distributed systems and understanding of machine learning algorithms. 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. 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. Experience