Case Study
Secure Fintech Transfer Portal
Timeline
12 weeks
Role
Lead architecture, security hardening, and delivery governance
Stack
Next.js · NestJS · PostgreSQL · Redis · Cloudflare
Problem and constraints
Approval latency and inconsistent security validation across sensitive transfer flows.
Strict security requirements, customer-facing latency impact, and multiple internal integrations.
Approach
Applied strict RBAC, centralized request validation, and targeted caching for high-read endpoints.
Solution
Transfer portal with admin MFA and tamper-evident audit trail.
Results
API latency
900ms -> 180ms
p95 measurement after cache and query tuning
Access-control incidents
-72%
Post-RBAC hardening and unified guards
Approval cycle time
-41%
Average processing time per transfer request
Metrics compare identical transfer paths before and after release over a 6-week window.
“The platform increased trust by balancing faster flows with strict security governance.”
Screens and deliverables
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