What I Do
- Identify and resolve hidden data inconsistencies in backend systems
- Trace root causes across multi-stage processing pipelines
- Diagnose classification failures caused by real-world noisy inputs
- Validate system behavior through API-level testing
- Improve reliability of data processing under production conditions
Debugging & Incident Analysis
Incorrect Transaction Categorization Due to Normalization Failure
Debugged classification failure caused by noisy input "MCDONALDS #123".
- Identified keyword conflict and priority-based misclassification
- Analyzed deterministic rule limitations
- Proposed multi-intent classification improvements
Incorrect Categorization Due to Multi-Intent Transaction Notes
Investigated a case where "GRABFOOD MCDONALDS" was incorrectly categorized as Transportation despite no system errors.
- Traced issue to missing keyword and weak preprocessing
- Validated behavior through API testing
- Improved normalization and keyword coverage
Technical Learning & Projects
Data Normalization & Categorization Engine Project
Built a rule-based transaction classification pipeline and investigated failure cases caused by noisy and multi-intent inputs. Analyzed misclassification behavior, traced root causes across normalization and keyword matching stages, and validated improvements through API testing.
GRABFOOD MCDONALDS
- Missing keyword mapping for restaurant chains
- Weak normalization allowed priority conflicts
- Added comprehensive keyword coverage
- Improved preprocessing logic
Backend hosted on Render free tier. First request may take 30–60 seconds to wake.
Wild Ones Imitation Web Game Project
Browser-based physics game prototype featuring collision detection, gravity mechanics, and real-time player interaction.
Key Insight
Systems can be logically correct yet operationally wrong when exposed to real-world data. My focus is identifying these gaps through failure analysis, not just validating expected behavior.
Focused on identifying why systems fail under real-world data conditions, not just building correct logic.
Career
Assistant Manager - Finance & Accounts
Nov 2023 - Dec 2024
• Performed transaction reconciliation by validating high-volume
in/out financial flows, ensuring zero discrepancy across
operational records
• Maintained accuracy of financial data supporting overall ledger
integrity and reporting
• Coordinated with internal stakeholders to resolve
inconsistencies and improve financial process efficiency
Finance Officer - Multi Roles
Jan 2022 - Nov 2023
• Performed daily reconciliation of high-volume transactions
across internal systems and external payment channels, ensuring
accuracy and completeness
• Investigated and resolved transaction discrepancies, identifying
root causes of reconciliation breaks under high-pressure
conditions
• Tracked and validated incoming and outgoing fund flows, ensuring
consistency between operational records and financial data aligned
with ledger reporting
• Collaborated with risk, accounting, and payment teams to
maintain accurate and reliable financial operations
Engineer - Production Engineer
Jul 2021 - Dec 2021
• Maintained and diagnosed production testing equipment through
daily checks and calibration to prevent manufacturing delays
• Resolved hardware and process failures under time constraints to
minimize downtime and ensure operational stability
Assistant Manager - Import/Shipping Administration
Dec 2020 - May 2021
• Reviewed import documents (Bill of Lading, Commercial Invoice,
Packing List, COO) and validated HS Code tax classifications
against INTR regulation
• Coordinated with PPJK and logistics teams for timely container
clearance and assisted with legal entity documentation and
contract translation
Part Time English Teacher & Internship Computer Technician
• Taught students from kindergarten to high school, focusing on
language proficiency and confidence building
• Hands-on repair of hardware, troubleshooting software, and
network maintenance.
Bachelor's - Chinese Language Education
• Participants of Overseas Chinese Preschool Teacher Class in
Guangzhou Children's School 2019 – 2020
• Thesis:
Comparison Analysis of Endocentric Phrase Between English and
Chinese Language
Jun 2016 - Sep 2020
Vocational High School – Computer and Network Engineering (TKJ)
• Cisco Certified Network Associate (CCNA)
Jul 2013 - May 2016