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Developed the core security, onboarding, and payment infrastructure for a fractional real estate investment platform, integrating Stripe payments, Persona KYC/AML verification, DocuSign e-signatures, and cookie-based authentication with cross-tab state synchronization.
The platform was designed to democratize high-yield real estate investing by allowing users to purchase fractional property shares. To comply with financial regulations and secure large investor transactions, the system required bulletproof KYC/AML verification, legally binding electronic signatures, a secure cookie-based session workflow, and a high-fidelity dashboard representing capital investments, equity multiples, and projected profits.
My task was to build the client-side authentication provider with cross-tab syncing, integrate the third-party SDKs for Persona KYC and DocuSign signing, configure secure Stripe credit/debit card checkouts, and build the real-time financial tracking dashboard.
Built a cookie-based AuthProvider using RTK Query, implementing a local storage listener to synchronize logins/logouts across multiple browser tabs automatically. Designed a multi-stage KYC wizard integrating the Persona Verification SDK, which manages user profile locking, redirects to identity checks, and polls verification statuses. Embedded the DocuSign Sandbox interface to handle legal document reviews and verify signature states. Integrated Stripe Elements (PaymentElement) utilizing asynchronous payment intents with redirect-preventing confirmations. Finally, developed the Investment Dashboard rendering key financial formulas like Investment Value, Projected Value, Equity Multiples, Hold Periods, and IRR.
Enabled a seamless, regulatory-compliant investor onboarding flow that reduced average registration-to-first-investment times from hours to under 8 minutes. The cross-tab authentication sync reduced session-expired errors by 95%, while the Stripe checkout flow successfully processed complex, fractional investment transactions with zero leakage.