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Yu-Tung Tzeng
Senior Software Engineer specializing in enterprise web apps and ERP/SAP integrations
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About
Frontend-focused engineer who built an expense management solution inside Microsoft Teams using React and Formily, modernizing reimbursement workflows that handle ~20,000 approvals per year. Demonstrated practical debugging and reliability improvements (stabilized multi-attachment uploads via event-binding investigation and hash-map-based targeting) and delivered ~30% performance gains by changing data structures, while coordinating stakeholders and team resources during quarter-end pressure.
Experience
Key Strengths
- Built expense management solution in Microsoft Teams (React + Formily) with multiple expense types and dynamic approval workflows
- Modernized budget/reimbursement process supporting ~20,000 approvals annually
- Diagnosed unstable attachment uploads (event binding) and improved reliability using hash map mapping for sequential uploads
- Validated fixes with end-to-end testing for multi-attachment uploads
- Improved runtime performance ~30% by switching data structures
- Pragmatic issue triage using logs and code tracing; coordinates team resources and timelines under quarter-end constraints
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