MLS Platform API Integration Upgrade

I am seeking an experienced developer to build and enhance a Multiple Listing Service (MLS) platform for real estate listings. The platform will manage a large database of property listings, provide fast and accurate search capabilities, and integrate seamlessly with external APIs... (Budget: $25 - $50 USD, Jobs: API Development, Backend Development, Blockchain, Cloud Computing, Database Management, Elasticsearch, JavaScript, MySQL, Payment Gateway Integration, Software Architecture)