Contact person: Business Client

Phone:Show

Email:Show

Location: Durango, Mexico

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I’m looking for an experienced Android engineer to build the KidShielder MVP, a parental-protection VPN app designed to keep children safe by enforcing a secure, always-on encrypted tunnel.

Our backend already delivers encrypted WireGuard profiles through a simple JSON API, so the focus is entirely on the mobile side:

The child cannot use the internet unless the VPN is active,
and the VPN cannot be disabled without the parent’s PIN.

CORE SCOPE

• Build VPN client using Android VpnService + WireGuard libraries
• Auto-connect at boot
• Set system-level Always-On VPN
• Enforce OS kill-switch (no traffic without tunnel)
• Foreground watchdog service checking tunnel every 2–5 seconds
• Auto-restart VPN on failure (≤ 5 seconds reconnect target)
• Parental PIN gate for disabling VPN or uninstalling
• Anti-tampering:

Prevent task killing

Prevent battery-optimization shutdown

Device Admin or Managed Profile methods welcome
• Multilanguage UI (English + Spanish) using resource files
• Secure sensitive data in Android Keystore
• Clean Kotlin code and proper lifecycle handling

WHAT I PROVIDE

• Backend API spec + test environment
• WireGuard profile format
• Branding: logos, colors, UI mockups
• PRD (Product Requirements Document)

ACCEPTANCE CRITERIA

No internet unless VPN is connected

Any disable/force-stop/uninstall prompts for parent PIN

Tunnel auto-reconnects within 5 seconds

Passes QA on Android 10–14 (stock + OEM skins)

Documented Kotlin codebase, ready for handoff

MILESTONES (Required)
1) VPN Engine – 25%

• VpnService + WireGuard tunnel connects
• Loads local JSON config
• Basic UI screen

2) Always-On + Kill-Switch + Watchdog – 35%

• Tunnel enforced
• No connectivity without VPN
• Auto-start on boot
• Foreground service + periodic health checks
• Auto-reconnect logic implemented

3) UI/UX + Multilanguage – 20%

• English + Spanish
• Branding + all screens
• PIN lock logic

4) Backend API Integration + Final Release – 20%

• Activation token flow
• Retrieves VPN config securely
• Status reporting
• Final APK + documentation

SCREENING QUESTIONS (MUST ANSWER)

Have you previously implemented an Android VpnService app?

Do you have experience with WireGuard on Android?

How would you implement a reliable kill-switch?

How would you prevent a child from force-stopping the service?

What’s your approach for a foreground watchdog service?

Can you deliver English + Spanish?

If any of these are unanswered, the bid will be ignored.

BUDGET

$1,500 – $3,000 USD (fixed)
Timeline: 6–8 weeks

IMPORTANT – NOT ACCEPTED

• Flutter / React Native / cross-platform
• OpenVPN (we are using WireGuard)
• No experience with VPNService
• Junior-level proposals" (client-provided description)