Staff SAP ABAP Developer - Global Accounting Tech

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 trade-offs. Join Coupang now to create an epic experience in this always-on, high-tech, and hyper-connected world. Role Overview As a Staff SAP ABAP Developer, you will be a core technical contributor within Coupang’s Global Accounting Technology (GATE) team, delivering high-quality ABAP solutions that power our mission-critical financial operations. You will independently own end-to-end development — from requirements analysis and technical design through implementation, testing, and production deployment — across multiple SAP modules. This role demands a seasoned developer who can work autonomously with minimal supervision, resolve production incidents independently, and maintain the highest standards of code quality and testing rigor. You will serve as a technical anchor for the team — setting quality standards, conducting code reviews, and mentoring junior developers — while delivering complex ABAP solutions at scale. You will work across SAP ECC and S/4HANA environments, supporting Coupang’s ongoing transformation from legacy SAP systems to a modern S/4HANA landscape. The ideal candidate combines deep ABAP expertise with strong problem-solving skills and the discipline to deliver reliably in a high-volume, fast-paced e-commerce environment. What You Will Do Independent End-to-End Development Own the full development lifecycle for assigned SAP workstreams — from functional specification analysis through technical design, coding, unit/integration testing, and production deployment Translate business requirements into robust technical solutions with minimal guidance, independently determining the optimal approach Deliver across multiple SAP modules (FI/CO/MM/SD) with deep process understanding and cross-module awareness Handle concurrent development tasks while maintaining quality and meeting delivery timelines Code Quality & Development Standards Define and enforce coding standards, naming conventions, and best practices for ABAP development within the team Lead code review processes — review junior developers’ code against established quality criteria, provide constructive feedback, and maintain consistency Write well-structured, performant, and maintainable ABAP code that serves as a reference for the team Establish and own test strategies including unit testing, integration testing, and regression testing with clear coverage targets Production Support & Incident Management Independently investigate and resolve production incidents without escalation — perform root cause analysis (RCA) and implement permanent fixes Diagnose system performance issues in ABAP programs, database access patterns, batch jobs, and interfaces Develop and execute go-live checklists, cutover plans, and rollback procedures for deployments Monitor and stabilize high-volume financial processes including month-end c