Hello Sir,
I have over 5+ years of experience in Web, mobile, eCommerce development and complete digital with completion of more than 200+ projects with 99% client success and 5/5 Google+ Business Rating.
To build like Upwork Project, it needs strong design, development, UI, Testing team. we have dedicated 25+ people team to assist you on this project. This is very big project. I advise we should move ahead on Phrase wise for this project. So, that we can go live each module by the time and ready this website/platform for potential users.
To build this website/platform, it would be cost you min. 50,00,000 Lakhs. As you know, we need to make website, apps, desktop software, API center, server and etc...
Looking forward to your reply.
Regards, Sanket.