Heng Sin
Backend Software Engineer at TikTok
Singapore
Summary
👤
Senior🎓
Top SchoolHeng Sin is a backend software engineer with 19 years of hands-on experience, currently building backend systems at TikTok from Singapore. He blends a Double Degree in Computer Science and Business from NUS with real-world discipline gained as a naval officer and diver, bringing calm leadership and rigorous process to engineering problems. His open-source work on the prominent iDempiere ERP project shows a focus on data integrity—fixing costing bugs and adding unit tests to ensure reliable financial logic across inventory and landed cost scenarios. Comfortable across backend services and QA, he prioritizes correctness, observability, and reproducible testing in complex domains. Motivated by a desire to give back, he seeks roles that create positive impact and delight users while continuously improving system robustness.
19 years of coding experience
Sciences, Secondary & Junior College, Sciences, Secondary & Junior College at Hwa Chong InstitutionDouble Degree, Computer Science and Business Administration, Double Degree, Computer Science and Business Administration at National University of Singapore
Chinese, English
Github Skills (9)
testing10
erp10
javas10
java10
accounting9
unit-testing9
open-source8
business-process7
business-logic7
Programming languages (5)
Github contributions (5)
idempiere/idempiere
Jul 2010 - Jan 2023
iDempiere. Community Powered Enterprise. Full Open Source Business Suite ERP/CRM/MFG/SCM/POS
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:2443 reviews, 103 commits, 1755 PRs in 12 years 8 months
Contributions summary:Heng primarily contributed to improving the accuracy of product costing calculations, specifically addressing inconsistencies in cost movement amounts. The work involved implementing and refining unit tests to ensure the reliability of the costing logic across various scenarios, including lot-level costing, cost adjustments, physical inventory, and PO landed costs. The commits demonstrate a focus on fixing bugs and thorough testing to maintain data integrity within the iDempiere ERP system.
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trekglobal/pcn-core
Apr 2023 - Mar 2025
iDempiere. Community Powered Enterprise. Full Open Source Business Suite ERP/CRM/MFG/SCM/POS
Contributions:62 pushes, 2 branches in 1 year 11 months
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