Landing Page & Real-Time API Integration

I’m building a single-screen landing page that does more than just look good—it has to pull real-time option data from an external API, run that feed through my pricing/greeks model, and present the live results immediately to the visitor. Here’s how I picture the flow 1. Page loads, calls the API for the latest option chain. 2. Response streams straight into the calculation module (I’ll give you the exact formulas; if you prefer, convert them from my Excel file). 3. Calculated values refresh the on-screen tables and charts without a manual reload. Frontend • A lightweight, responsive UI—React, Vue or plain JavaScript are all fine so long as the layout is crisp and mobile-friendly. • Clear status messaging for API latency or errors. Backend / Integration • You hook up to the real-time endpoint (REST or WebSocket—whichever matches the data source you choose). • Handle auth keys securely, cache intelligently to avoid rate-limit issues, and keep the calculation cycle under one second. Deliverables • Full source code with comments. • Brief setup docs (env variables, build, deploy). • Deployed demo link or screen-capture walkthrough proving real-time updates and accurate model output. Acceptance criteria • Landing page loads in <2 s on 4G. • Data refreshes continuously without page reload. • Model output matches my test values to ±0.5 %. If you have experience with high-frequency data, securities APIs, or numerical models, that’s a plus—let me know in your proposal.

Project ID: 40590931