looking for developer for VPN application solution.

I am looking for a developer who can develop for me both application. The PPTP protocol has been disabled because it is marked as insecure and broken.

Need to use the L2TP+IPsec, IKEv2, OpenVPN, or SSTP protocol to connect to the servers.

• Free and Paid VPN access
• Faster and Safer access to VPN
• Support Chat
• In-App Purchase functionality
Google Ads integration
must admin panel for control application
Technology Preference:- Java(Android) Swift(iOS)

Please bit only who has done this kind of job. Thank you.