Senior Staff Software Engineer - Ad Infrastructure

About Coupang Play Coupang Play is an OTT video streaming service. We offer a wide range of content, including Original Series, TV Shows, Movies, and Sports. We are in the business of delivering exceptional storytelling. We produce award-winning scripted and unscripted Original Series, such as “Boyhood”, “Anna”, and “SNL Korea”. We believe Sports can also be elevated by creative storytelling. Play is now an authoritative destination for Sports, broadcasting K-League, La Liga, Bundesliga, F1, NFL, and other leading leagues and tournaments. We also offer some of the latest movies that were just released in local theaters, bringing more exceptional storytelling to our Customers. To ensure that we deliver all content seamlessly, we invest in Engineering, Product, and Design. Coupang Play is available on all mobile devices, tablets, PC, Smart TV, Apple TV, and Android TV. Our teams keep optimizing how Customers discover and stream both VOD and Live content. That includes investments in frontend, backend, and infrastructural developments. We also embrace Machine Learning to refine our CX. We are still very early in our growth stage. If you enjoy solving complex problems using industry-leading technology or unconventional business approaches, please join us. We are building a world-class team of problem-solvers, all dedicated to delivering exceptional storytelling to our Customers. Role Overview We’re looking for a Tech Lead / Senior Staff Software Engineer to lead the development of our next-generation Ad Infrastructure, with a focus on building a Supply-Side Platform (SSP) and Ad Exchange from the ground up. In this role, you’ll serve as the hands-on architect and technical owner of the ad infrastructure and backend services that power our advertising business for our streaming service. You’ll lead system architecture, implementation, and technical strategy, while mentoring engineers and collaborating closely with cross-functional partners across Product, Business, and Ad Ops. What You Will Do Design and own the architecture and roadmap for our ad infrastructure, including SSP and Ad Exchange components. Lead the development of scalable, low-latency auction systems and OpenRTB integrations. Mentor and grow a high-performing engineering team; establish best practices in code quality, system performance, and operational excellence. Collaborate with cross-functional stakeholders to align technical solutions with business goals and compliance requirements. Basic Qualifications 10+ years of experience in backend or distributed systems engineering, including 3+ years as a Tech Lead driving complex, cross-team initiatives. Proven experience building an SSP or Ad Exchange from architecture to production scale, including OpenRTB integrations with major DSPs. Strong leadership in project planning, execution, code/design reviews, and mentoring senior engineers. Deep expertise in low-latency, high-throughput systems, performance profiling, and cost/performance trade-offs. Production experience with streaming and data systems. Proficiency in one or more backend programming languages (e.g., Go), with a strong understanding of cloud-native architectures. Strong knowledge of data infrastructure and storage systems. Track record of technical leadership and mentoring senior engineers. Excellent verbal and written communication skills. Preferred Qualifications Experience with advertising in video/CTV or OTT environments. Excellent verbal and written communication skills in English. 전형 절차 및 안내사항 전형 절차 서류전형 > 1차 화상면접 > 2차 화상면접 > 처우협의 전형 절차는 직무별로 다르게 운영될 수 있으며, 일정 및 상황에 따라 변동될 수 있습니다. 전형 일정 및 결과는 지원서에 등록하신 이메일로 개별 안내 드립니다. 참고사항 본 공고는 모집 완료 시 조기 마감될 수 있습니다. 지원서 내용 중 허위사실이 있는 경우에는 합격이 취소될 수 있습니다. 취업 보호 대상자 ( 보훈 대상자 , 장애인 등 ) 는 관련 법률에 따라 채용우대를 받을 수 있습니다 . 직급과 담당 업무 범위는 후보자의 전반적인 경력과 경험 등 제반사정을 고려하여 변경될 수 있습니다. 이러한 변경이 필요할 경우, 최종 합격 통지 전 적절한 시기에 후보자와 커뮤니케이션 될 예정입니다. 채용 및 업무 수행과 관련하여 요구되는 법령상 자격이 갖추어지지 않은 경우 채용 ... (truncated, view full listing at source)