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Sanjana Mali
Mid-Level Software Engineer specializing in FinTech payments
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Full-stack engineer with payments-domain experience from ACI Worldwide who shipped an end-to-end MFA system for payment workflows (React/TypeScript + backend APIs + Postgres), then owned it in production with logging/monitoring and client adoption tracking. Also improved checkout responsiveness across Apple Pay/PayPal flows via React performance profiling, component refactors, and state/network optimizations.
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Key Strengths
- Shipped MFA for payment workflows end-to-end (frontend + backend) in production
- Designed reusable OTP UI components and error/verification state handling across multiple payment flows
- Built backend APIs for token validation/OTP verification integrated with payment processing services
- Drove measurable frontend performance improvements by refactoring large component trees and reducing unnecessary state updates
- Performance troubleshooting using browser profiling to identify re-renders/long scripting times
- Designed Postgres schema for authentication attempts/audit logs with constraints and indexes; optimized latest-state queries using execution plans
- Production ownership: monitored adoption and production behavior; debugged and iterated post-launch
- Adoption impact: ~70% of ~120 clients enabled the MFA feature within one month
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