The latest articles on DEV Community by Ahmad Bilal (@ahmadbilaldsa). https://dev.to/ahmadbilaldsa https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4141094%2F5e862b35-78a5-46ab-850c-296dbea68413.jpg https://dev.to/ahmadbilaldsa en Ahmad Bilal Thu, 24 Sep 2026 11:07:12 +0000 https://dev.to/ahmadbilaldsa/building-payoutdelta-an-open-cross-border-banking-dataset-100100-lighthouse-nextjs-engine-4o0n https://dev.to/ahmadbilaldsa/building-payoutdelta-an-open-cross-border-banking-dataset-100100-lighthouse-nextjs-engine-4o0n <p>When invoicing foreign clients via SWIFT wire, international software engineers and remote agencies frequently lose 3.5% to 8.2% of gross revenue to correspondent banking hops and retail FX markups.</p> <p>To solve this, I built <strong>PayoutDelta</strong>—an open benchmark tracking intermediary SWIFT BICs (CHASUS33, CITIUS33), retail spreads, and statutory export tax codes across 50 corridors.</p> <h3> Technical Architecture </h3> <ul> <li> <strong>Stack:</strong> Next.js 15 (Static Export) hosted on GitHub Pages.</li> <li> <strong>Performance:</strong> 100/100 across Desktop and Mobile on Lighthouse (0.2s FCP, 0.5s LCP, 0ms TBT).</li> <li> <strong>Privacy:</strong> 100% client-side execution with zero third-party tracking or runtime analytics.</li> <li> <strong>Developer API &amp; Open Data:</strong> Provides machine-readable endpoints (<code>/api/fees.json</code>, <code>/llms.txt</code>, and Schema.org <code>Dataset</code> microdata) for automated ingestion.</li> <li> <strong>Embeddable Cards:</strong> Zero-dependency static cards (<code>/embed/[corridor]</code>) that third-party sites can drop into iframes.</li> </ul> <p>Explore the live tool: <a href="https://ahmadbilaldsa.github.io/payout-delta/" rel="noopener noreferrer">PayoutDelta</a><br> Developer Hub: <a href="https://ahmadbilaldsa.github.io/payout-delta/developers/" rel="noopener noreferrer">PayoutDelta Developers</a><br> GitHub Repository: <a href="https://github.com/AhmadBilalDSA/payout-delta" rel="noopener noreferrer">github.com/AhmadBilalDSA/payout-delta</a></p> webdev nextjs fintech opensource