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Yasa Yap
Looking for a jobBackend Engineer
I build reliable enterprise banking systems, optimize databases, and deliver end-to-end software solutions.
IndonesiaBackend Engineer at PT Prima Master Bank
About
I've built and supported enterprise banking applications at PT Prima Master Bank for more than 15 years, spanning backend and full-stack engineering.
As a Backend Engineer, I optimized SQL and IBM DB2 queries to reduce monthly reporting time by 15%, developed integrations for HRIS and BI-FAST operations, and improved system uptime by 97% through production root-cause analysis.
I turn complex operational workflows into practical software, from credit-approval engines and APIs to UI/UX flows in Figma. I work across Node.js, Go, Python, Java, PHP, .NET, JavaScript, TypeScript, and relational and NoSQL databases.
Experience
Backend Engineer
Optimized SQL and IBM DB2 queries, reducing monthly reporting time by 15%. Developed backend integrations for enterprise projects, including automated HRIS and BI-FAST real-time banking operations.
SQLIBM DB2Performance OptimizationStored ProceduresQuery TuningHRISBI FASTCredit RiskCICSACRRRoot Cause Analysis