Live SeamlessChex 2015 - 2026
Took over a prototype stuck after two years of outside development, re-architected it on AWS in six months, then stayed the exclusive engineering partner for eleven years. Bank connectivity end to end: Plaid Link and re-authentication, Dwolla funding sources, instant and manual verification, ACH transfers, merchant onboarding and risk state. On top of it, a versioned partner API (v1/v2) with API-key auth and a per-app audit log, so other products could open bank accounts, move money and bill their own customers through the platform. Today it is thirteen repositories still taking commits: two product backends, two Angular portals, a React 19 dashboard as the single front door into both, a Next.js onboarding portal, Python and Go services on Lambda, an integration hub and a Playwright suite per product. Plus three WooCommerce payment plugins in the official WordPress directory: SeamlessChex eCheck Payments for eCheck and ACH at checkout, Paynote for bank transfers with instant verification (closed by the author in 2026), and its successor Seamless ACH for Plaid-verified bank payments with recurring billing and subscriptions.
