React Native Developer — BLE Safety App (Core Bluetooth, Background Mode, SMS)

Posted yesterday

Worldwide

Summary

We are a confidential Australian startup building a companion app (iOS and Android) for a proprietary BLE button device. Core function: detect a double-click button press from a paired Bluetooth device and send a native SMS with the user's GPS location to up to 3 nominated contacts. 5 screens only. No backend. No user accounts. Zero data collection. The complexity is entirely in Bluetooth reliability — app must use Apple's Core Bluetooth framework with background mode enabled, detecting button signal when phone is locked. Fixed price only. Full brief provided under NDA after shortlisting. To apply, please include: BLE/Bluetooth app examples, your approach to Core Bluetooth background mode reliability, fixed price quote for Option A (iOS + Android) and Option B (iOS only), and confirm you will sign an NDA. Start your proposal with: "I have read the brief and have built BLE apps previously." See attachment for more information

$6,000.00
Fixed-price
Intermediate
Experience Level
Remote Job
Ongoing project
Project Type

Skills and Expertise

Mandatory skills

React Native

Android App Development

Activity on this job

Proposals:20 to 50
Last viewed by client:1 hour ago
Interviewing:
0
Invites sent:
1
Unanswered invites:
1

About the client

Member since Jul 10, 2026

Australia
12:00 AM

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