[{"data":1,"prerenderedAt":213},["ShallowReactive",2],{"content-\u002Fblog\u002Fdesigning-scalable-loan-systems":3},{"_path":4,"_dir":5,"_draft":6,"_partial":6,"_locale":7,"title":8,"description":9,"date":10,"tags":11,"readingTime":16,"draft":6,"body":17,"_type":207,"_id":208,"_source":209,"_file":210,"_stem":211,"_extension":212},"\u002Fblog\u002Fdesigning-scalable-loan-systems","blog",false,"","Designing scalable loan systems","Practical patterns for repayment schedules, disbursement scenarios, and audit-friendly loan workflows—written by a fintech software engineer.","2026-04-18",[12,13,14,15],"Fintech","Loan Systems","Backend","Architecture","6 min",{"type":18,"children":19,"toc":198},"root",[20,36,43,55,69,75,102,108,129,135,147,153,166,172],{"type":21,"tag":22,"props":23,"children":24},"element","p",{},[25,28,34],{"type":26,"value":27},"text","Loan systems fail quietly. A small rounding mistake or an ambiguous partial disbursement rule becomes a month of reconciliation. 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Your future self (or a regulator-style question) will ask: ",{"type":21,"tag":95,"props":123,"children":124},{},[125],{"type":26,"value":126},"what happened to this balance on this date?",{"type":26,"value":128}," The database and service layer should tell the same story.",{"type":21,"tag":37,"props":130,"children":132},{"id":131},"audit-trails-are-a-product-feature",[133],{"type":26,"value":134},"Audit trails are a product feature",{"type":21,"tag":22,"props":136,"children":137},{},[138,140,145],{"type":26,"value":139},"Treat approvals, manual overrides, and state transitions as first-class events. 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Keep financial logic in focused services, make repayment boring, and design for audits from day one.",{"title":7,"searchDepth":199,"depth":199,"links":200},2,[201,202,203,204,205,206],{"id":39,"depth":199,"text":42},{"id":71,"depth":199,"text":74},{"id":104,"depth":199,"text":107},{"id":131,"depth":199,"text":134},{"id":149,"depth":199,"text":152},{"id":168,"depth":199,"text":171},"markdown","content:blog:designing-scalable-loan-systems.md","content","blog\u002Fdesigning-scalable-loan-systems.md","blog\u002Fdesigning-scalable-loan-systems","md",1777380682581]