Contact person: Business Client

Phone:Show

Email:Show

Location: Chicago, United States

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"_____________________________________________________________________
Bid must include your fixed budget in first line, If that is empty, I will pass that proposal.
Don't require higher budget once interview is started.
I am not gonna hire like this developer.
___________________________________________________________________
We are looking for an experienced VPN app developer to build a secure, cross-platform VPN client supporting WireGuard, Shadowsocks (TCP/UDP), Shadowsocks over WebSocket/HTTPX, and multi-hop Shadowsocks (up to 3 hops) similar to Outline.

The app will:
-Accept access keys and connect to the VPN
-If connection fails, it should fallback from WireGuard to Shadowsocks
-Support multi-hop configurations (example JSON will be provided)
-Support Shadowsocks over WebSocket and HTTPX
-Periodically fetch domain lists via API to avoid blocking (API returns fallback domains)
-Report successful and failed connections back to the API

Platforms to Support:
-Flutter, Kotlin, Switft and etc

Key Requirements:
-Implement support for:
-WireGuard
-Shadowsocks(TCP/UDP)
-Shadowsocks over WebSocket and HTTPX
-Multi-hop Shadowsocks (up to 3 hops)
-Integrate backend APIs for:
-VPN config fetching
-Domain fallback handling
-Connection reporting
-Support Outline-style access key format(ssconf://)
-Hande first-lanch and periodic updates for domain rotation

Windows and Android version was already completed last month.
In Windows version there are a few stuff that must be upgraded by you.
Thank you so much for your bid." (client-provided description)