Staff Back-end Engineer (New Fintech Product)
Core
Define technical direction for the payment core domain and design/stabilize large-scale fintech systems for Coupang's platform users.
Role type
Staff Back-end Engineer (Payment Systems)
Builds
CoupangPay payment services, Coupang Eats settlement systems, and payment back-office infrastructure.
Domain
Fintech / Payments / E-commerce
Required skills
Distributed system design, Java/Kotlin, Spring Framework, Technical ownership, Performance optimization, Data consistency, Security architecture
Preferred skills
JPA, Microservices architecture, Payment domain expertise, High-traffic incident response, Large-scale data processing, Technical leadership
Technologies
Java, Kotlin, Spring Framework, JPA, Microservices
Responsibilities
Define technical direction for the payment core domain, Design and stabilize large-scale fintech systems, Own the technical stability and scalability of core payment services, Collaborate with finance and settlement teams to design back-office architecture, Mentor engineers through code and design reviews
