A Stripe Connect marketplace on Bubble.io for payment-first, owner-financed deal management — ACH checkout, KYC onboarding, automated amortization scheduling, seller and buyer dashboards, and a full audit and export layer.
Sellers managing land contracts, vehicle financing, and equipment installment sales operated across spreadsheets, manual bank transfers, and disconnected ledgers. We built a true SaaS marketplace — Stripe Connect for direct seller payouts, ACH prioritization for capped fees, backend amortization math, and row-level privacy so no seller or buyer ever sees another's ledger.
Onboard buyers, process ACH directly to the bank, auto-generate amortization, and export tax ledgers — in one platform.
These are high-dollar, multi-year transactions where accuracy is non-negotiable — a miscalculated amortization schedule or missed late-fee flag has real financial and legal consequences. Existing generic tools offered no structured deal lifecycle, no role-based data isolation, and no compliance layer.
Heavy math — amortization, interest/principal splits, running balances — lives in scheduled backend workflows, never in page-load conditions. Stripe Connect Express handles onboarding and routes payments directly to sellers; ACH Direct Debit is enforced to cap fees.
WU-efficient by design. Satellite data types handle ledger rows so the parent Deal record stays light; search uses :first item and :count with constraints instead of :filtered, with pagination past 25 rows. Stripe Connect Express routes funds directly to sellers — Velcod never touches the money.
Each milestone delivers a reviewable, functional layer before the next begins — no bundled delivery.
Full portal UI and clickable prototype in Bubble — seller dashboard, buyer view, deal creation, amortization display, and payment checkout screens.
Database schema, role-based privacy rules, clickwrap legal gate with timestamped audit trail, Stripe Connect Express onboarding, ACH-prioritized checkout, and webhook handlers.
Backend amortization engine, seller dashboard with pagination and analytics, buyer read-only view, and late-fee flagging.
PDF statements per deal, year-end CSV ledger exports, file uploads for contracts and receipts, an activity audit log, and tiered metered billing.
End-to-end QA across all flows, bug fixes, security review of privacy rules and Stripe webhooks, and production handoff.
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Book a Free Strategy Call →3-week launch · Fixed pricing · Senior team