Backend Developer for API Rate-Limiting Issues

We are seeking an experienced backend developer to diagnose and resolve third-party API rate-limiting issues on our web application (app.bitvexis.com). The app is currently throwing multiple frontend and backend errors because external API calls are hitting tier limits. The ideal candidate will have experience in API integration and troubleshooting to ensure smooth operation of our application. The Problems Identified: Per-Minute Limit Exceeded (HTTP 429): "error":"Rate limit: Call per minute limit exceeded for tier 0, limit 5" Monthly Usage Exceeded (HTTP 403): "error":"Forbidden: Monthly usage limit exceeded"