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JiHeon Kim
Mid-Level Backend Software Engineer specializing in Financial Services
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About
Frontend engineer focused on React/TypeScript dashboards and end-to-end product delivery, including RBAC with JWT, Redux-based session persistence, and a centralized API layer with token injection. Has experience with real-time MongoDB-backed updates (shared across web and mobile) and has solved production-impacting issues like timezone inconsistencies using date-fns/UTC conversions, backed by Jest + manual QA and rollback-driven release practices.
Experience
Education
Key Strengths
- End-to-end frontend architecture design around REST APIs
- Dashboard development with RBAC, JWT-based role claims, and route protection
- State management with Redux persisted across pages (sessionStorage)
- Centralized API layer for consistent error handling and automatic auth token injection
- Real-time data synchronization using MongoDB-backed updates across web and mobile
- Pragmatic QA approach combining Jest unit tests with manual edge-case testing
- Production issue handling with rollback strategy and log-driven root cause analysis
- Resolved timezone/analytics discrepancies via explicit UTC conversions using date-fns
- Component reusability-focused refactoring to reduce duplication and improve maintainability
- Data visualization implementation using Chart.js and Recharts
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