Inho Lee

Building scalable business systems across web, mobile, backend, and cloud. 7 years of experience delivering payment platforms, settlement automation, logistics services, and high-performance applications—from architecture design to production deployment.

2026
2024
2023
2025
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View Safely Deploying a Unified Payment System

Built in close collaboration with finance and operations teams to automate reconciliation and settlement workflows across multiple marketplaces.

50,000+Monthly Orders Processed
Real-Time Multi-Channel Order Integration
Order Processing Scalability
Duplicate Settlement Prevention
OMS/WMS Data Consistency

  • Built an event-driven notification system using AWS SNS and SQS fan-out, decoupling business logic from notification delivery and enabling scalable, fault-tolerant SMS and email processing.
  • Implemented the Transactional Outbox pattern to guarantee reliable event publishing and prevent notification loss during database transactions.
  • Leveraged AWS Lambda as SQS consumers to automatically scale notification processing based on traffic demand, reducing infrastructure management overhead and operational costs.
5,000+Daily Recipients
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99.9%High Availability
AWS SNSFan-out TopicEmailSQS + LambdaPushSQS + LambdaSMSSQS + LambdaDELIVERED TODAY5,127EmailPushSMSDelivery Rate99.9%Avg Latency< 2s
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