VPN server management software

We are looking for someone who can develop VPN server management software with the following features.
PPTP / SSL/ SSH/ SSH Tunnel/ Openconnect/ Openvpn/ wireguard

Features
1. Deploy VPN servers from GUI
2. Manager 1 server many Ip pool on child vpn servers / nodes
3. Protocols supported - PPTP / SSL/ l2tp/ Openvpn/ wireguard
4. Manage VPN users
5. Allow deny access to users
6. Allow/ deny concurrent user connections (api needed for integration with billing)
7. Manage reseller accounts, server deployment and users
8. API to sync expired / active and locked client accounts
9. Api access to connect client apps like Ios, android, desktop apps.
10. Load balancing setup for vpn servers, location settings example (user connects to NY, and we have 4 servers in NY, should connect to least loaded server).
11. Setup dedicated IP address based on services user purchased.