I build, optimize, and maintain high-performance enterprise backend applications. Specializing in C#, .NET Core, database tuning, and secure third-party integrations (such as customs systems and ERPs) to ensure system reliability and efficiency.
Over my career in manufacturing and enterprise industries, I have developed a balanced foundation in C#/.NET and Golang backend development, database maintenance, and business process automation.
Maintaining and developing backend web APIs and background services using C# and the .NET Core/Framework ecosystem.
Building clean, lightweight, and high-performance RESTful APIs using Go, Gin Gonic framework, GORM, and JWT.
Writing efficient SQL queries, optimizing indexes, and managing Stored Procedures in SQL Server and MySQL databases.
Troubleshooting system bugs, performing L3 maintenance, and building automated internal workflows using Power Platform and SharePoint.
PT. Solusi Manufaktur Teknologi (SMART)
PT. Astra International
PT. Pulau Intan Lestari
Domain-complete warehouse system: bin+batch stock, StockMutation ledger, FEFO outbound, mobile QR scan, and Sanctum ERP API. Portfolio case study for warehouse/ERP correctness patterns.
Independent technology practice for custom web apps, ERP-style systems, and workflow automation. Selected product demos live on the agency site — not a full client dump here.
Maintained and optimized integration features connecting internal ERP logistics databases with the government customs portal (CEISA) for automated document filings (BC 4.0, BC 2.3). This integration ensured continuous regulatory compliance and reduced manual reporting errors.
Optimized database performance by analyzing query execution plans, refining indexes, and updating Stored Procedures for manufacturing systems, successfully decreasing CPU utilization from 100% to 20-30% during peak production hours.
Provided high-urgency L3 production support, resolving critical bugs, maintaining features, and ensuring 24/7 uptime for core ERP and manufacturing modules.
Executed the migration of legacy database servers to modern infrastructure, validating backups and maintaining 100% data integrity with minimal downtime.
Developed a backend web API for barcode and QR-code-based inventory scanning, integrated with SAP Business One to streamline warehouse stock-taking. It successfully reduced the overall stock opname process from 7 days to just 1 working day.
Developed a non-conformance reporting (NCR) system with user authentication and database persistence. Created within a 2-month learning period, this Golang system completely replaced manual Google Forms with a structured database-driven ISO compliance tool.
Automated critical business approvals and ticket reconciliation workflows. This enabled managers to approve DB change requests on-the-go via Teams mobile, boosting flexibility and transparency.