Need Some Expert Support in MEAN/MERN Stack for Bug Fixes and Stablizing Web App

Hi ,

I need an Expert Full-stack Developer who can work for 20-30hrs to stabilize the web app that we have built Flight booking system in MEAN(Customer) and MERN Stack(Agent/SUper admin/Corporate).
BackEnd In NodeJS and Express. DB MongoDB.

http://qa.trackontravellers.com.

Thanks,
Mayil Tech