Staff Back-end Engineer (Fintech Developer Platform)

Coupang Pay is a fintech business providing innovative payment and financial solutions to consumers and merchants. This Staff Back-end Engineer role involves designing and building platforms that enhance developer experience and reliably operate large-scale financial services, with focus on payment processing infrastructure, high availability, CI/CD, and regulatory compliance.

* Design, build, and optimize platform services for Coupang Pay business services * Operate infrastructure and platforms capable of reliably handling large-scale payment traffic * Design and implement high-availability and disaster-recovery architectures * Advance CI/CD and DevOps platforms and establish engineering operational principles * Build and operate platforms that comply with financial security and regulatory requirements * Collaborate with Coupang technical teams to optimize operations tailored to fintech

* 7+ years of back-end systems design and development experience in Unix/Linux environments * Bachelor's degree or higher in Computer Science or related field * Experience with container and cloud environments including Docker, Kubernetes, and AWS * Proficiency in one or more programming languages including Python, Go, Java, or Kotlin * Experience with monitoring, incident response, and large-scale system operations using tools such as Grafana, Loki, and Prometheus * Experience designing, building, and operating CI/CD pipelines