Senior Staff, Back-end Engineering, Fintech Engineering (Coupang Pay)
Core
Architecting and building mission-critical, distributed payment and lending systems serving millions of users across Asian markets.
Role type
Sr. Staff Back-end Engineer (Fintech)
Builds
Cloud-native payment gateways, real-time transaction engines, and FinTech lending products.
Domain
Fintech / E-commerce / Distributed Systems
Deliverable
production ML models | product features | infrastructure
Required skills
Distributed systems architecture, Microservices design, Event-driven systems, Real-time data processing, Cloud-native development, System design, Concurrency management, API design, Code optimization, Security practices
Preferred skills
Payment systems expertise, High-scale ledgering, Credit risk modeling, Core lending platform lifecycle, Kubernetes, Multi-region scaling, AI/ML integration, Open-source contributions
Technologies
Java, Go, Python, JavaScript/TypeScript, Kubernetes, Cloud infrastructure
Responsibilities
Architect and implement complex distributed cloud-native systems; Write and review production-grade code for performance and reliability; Lead technical roadmap for FinTech lending products; Optimize systems for concurrency and throughput under global loads; Mentor senior engineers and peers; Collaborate cross-functionally on product strategy and technical vision.
Seniority
Sr. Staff, hands-on IC with strategic leadership