Automation testing, Add parallel execution to the existing project (Appium/Nodejs/Mocha/WendriverIO configuration)

I am looking for a skilled developer with experience in Appium/Nodejs/Mocha/WendriverIO configuration to help me with my project. The main focus of this project is to add parallel execution to my existing test scripts. I can send you the sample project with all existing configuration and run files in advance, so you can figure out if you can manage with adding parallel execution. Programming Language: JavaScript
Experience: - Proficiency in JavaScript, Appium and Mocha and parallel configuration experience is a must 
Project Requirements: - Configure existing test scripts for parallel execution - Ensure smooth integration of Appium and Mocha - Optimize the performance of the test scripts
Payment by Paypal.