Senior Staff Backend Engineer - Fraud Detection

About the role

Coupang’s Risk, Fraud & Trust Engineering organization is building next-generation platforms that protect the marketplace ecosystem through intelligent, scalable, and real-time decisioning systems. The team develops highly scalable fraud detection and risk evaluation platforms that process massive volumes of transactions, seller activities, and marketplace events while ensuring excellent customer and seller experiences.

What you'll do

• Lead the architecture, design, and development of scalable data and ML infrastructure supporting fraud detection, risk evaluation, and trust systems
• Build and optimize large-scale batch and real-time data pipelines capable of processing high-volume events with low latency and high reliability
• Own the end-to-end productionization of machine learning models, ensuring deployment architectures meet performance, scalability, and operational requirements
• Partner closely with Data Scientists and Engineering teams to bridge model development and production deployment
• Define long-term technical vision and roadmap for data processing, ML platform capabilities, and fraud detection infrastructure

What you need

• 13–23 yrs of experience
• System design
• Java
• Kafka
• Machine learning
• ETL
• Spark
• Any graduate

Good to have

• LLMs