Automated B2B Payment & Trade Financing Platform Development

Our client provides commercial trade credit, invoice financing, and automated settlements for over 18,000 business suppliers and enterprise buyers across North America ($1.2B in annual payment volume). As transaction volume scaled, their legacy financial software struggled with slow 72-hour settlement delays, manual bookkeeping bottlenecks, and duplicate transaction risks.

Softaims designed and developed a unified, PCI-DSS compliant financial platform in Python (FastAPI) and React. The system features Intelligent Multi-Rail Payment Routing (FedNow, RTP, Same-Day ACH) and an Automated Double-Entry Ledger—reducing settlement times from 3 days to under 3 seconds and completely eliminating 16 hours of weekly manual bookkeeping.

Based in New York, the client is a high-growth FinTech platform that helps commercial suppliers get paid instantly on their wholesale invoices while offering flexible net-60 payment terms to commercial buyers.

In commercial B2B trade, cash-flow speed is vital. When a supplier ships a $150,000 equipment order, waiting several days for bank transfers to clear ties up essential working capital.

The client's existing software created substantial business friction:

• 72-Hour Payment Settlement Delays: Payouts were batched into once-daily files sent via legacy banking rails, forcing suppliers to wait 3 to 5 business days for funds to reach their accounts.
• 16 Hours of Weekly Manual Bookkeeping: Every Monday, finance managers spent entire workdays manually downloading bank CSV statements and matching invoice numbers one by one to reconcile account balances.
• Duplicate Charge Risks: Network timeouts during mobile invoice approvals occasionally triggered automated retries, resulting in duplicate charges that cost the company $140,000 annually in dispute fees and merchant dissatisfaction.

Softaims engineered an institutional-grade financial transaction platform designed for speed, transaction accuracy, and automated bookkeeping.

Key Capabilities Delivered:

• Smart Multi-Rail Payment Selector: Dynamically evaluates transaction amounts, fee costs, and urgency to route payments over the fastest, most cost-effective banking rail (FedNow, RTP instant rails, or Same-Day ACH).
• Automated Double-Entry Accounting Ledger: Replaced simple balance updates with an immutable double-entry ledger. Every balance change is recorded as a paired debit and credit event, making financial discrepancies mathematically impossible.
• Built-In Duplicate Charge Protection: Every payment request uses unique cryptographic verification, ensuring that even if a user clicks 'Pay' multiple times on a spotty mobile connection, exactly one charge is processed.
• Real-Time Merchant Portal: A responsive web application where commercial suppliers can track live invoice payouts, download financial statements, and manage trade credit limits.

Handling over $1.2 billion in financial transactions requires zero room for error. Softaims executed a 14-week security-focused development lifecycle:

1. Financial Workflow Mapping (Weeks 1–3): Documented all banking integrations, payment status workflows, and regulatory compliance requirements (PCI-DSS and SOC 1 Type II).
2. Core Transaction Engine Build (Weeks 4–9): Built the multi-rail payment router, double-entry accounting engine, and Plaid/Stripe bank verification APIs.
3. Automated Reconciliation Testing (Weeks 10–12): Simulated millions of payment scenarios, edge cases, and network dropouts to verify 100.000% transaction and ledger accuracy.
4. Security Audits & Production Launch (Weeks 13–14): Conducted rigorous third-party penetration testing and successfully launched the platform with zero merchant downtime.

The new payment platform unlocked substantial commercial and operational benefits:

• Sub-3 Second Instant Payouts: Commercial suppliers can now receive instant invoice payments 24/7/365, driving a 34% increase in merchant platform adoption in the first 90 days.
• 100% Automated Bookkeeping: Bank settlements are reconciled against the internal ledger in real time, completely eliminating 16 hours of weekly manual spreadsheet balancing per finance manager.
• Zero Duplicate Charges: Processed over 3.4 million transactions post-launch with zero duplicate payment errors, saving $140,000 annually in dispute fees.
• Scalable to $2.5B+ Volume: Robust microservices architecture easily handles peak commercial transaction spikes without slowing down.
• Full SOC 1 & PCI-DSS Compliance: Passed regulatory audits on the first attempt, establishing institutional trust with major commercial banking partners.

"Handling $1.2 billion in commercial payments leaves zero room for error. Softaims architected an automated multi-rail payment engine and mathematical double-entry ledger that completely eliminated our reconciliation headaches and duplicate payment risks."

"They delivered a system with the precision of an institutional Wall Street bank and the velocity of a top-tier Silicon Valley product team. Our merchants love the instant payouts, and our finance team finally has their time back."

— Sarah Jenkins, Head of Product Engineering, North American B2B Trade Platform