Fullstack Developer for Rapid App Launch

I'm seeking an experienced Fullstack Developer to join our team for an ongoing project lasting less than a month. The primary goal is to prepare our app for its first launch on both iOS and Android platforms.

Key Responsibilities:
- Review existing APIs
- Make necessary changes or create new ones based on a new simplified design

Ideal Skills and Experience:
- Proficiency in Java, ElasticSearch, Spring Boot, Microservices, MySQL, React, and React Native
- Strong background in API integration
- Ability to work efficiently under tight deadlines