Freelance BLE Expert (iOS or Android) – Immediate Start

Mobile

Freelance BLE Expert (iOS or Android) – Immediate Start

Mobile
Wilcza 46, Warszawa

intent

Freelance
B2B
Senior
Remote
3 819 - 7 638 USDNet per month - B2B

Job description

We’re looking for an experienced Bluetooth Low Energy (BLE) Expert to join our team as a freelancer immediately. If you have a strong commercial background in BLE, IoT, and mobile development (iOS or Android), and you can independently implement BLE solutions in real projects, we want to hear from you.


As a specialized software house, we work on innovative IoT solutions for top-tier clients like Oura, BOSE, and McIntosh. This is an opportunity to work on a high-impact project where your deep BLE knowledge will be critical.


Who we’re looking for:


  • Proven commercial experience with BLE – deep understanding of communication protocols, peripheral connections, and troubleshooting.
  • Strong mobile development skills – expertise in either iOS (Swift, Core Bluetooth) or Android (Kotlin, BLE APIs).
  • Experience in IoT – working with connected devices, sensors, and embedded systems.
  • Solid knowledge of Unit Testing and best practices in mobile development (XCTest, Quick/Nimble for iOS, or JUnit, Mockito for Android).
  • Familiarity with concurrency and performance optimization for BLE applications.
  • Fluent English (B2+) – written and spoken.


Nice to have:


  • Experience with Bluetooth 5+ and advanced BLE features (Long Range, Mesh).
  • Previous work in IoT security and encrypted BLE communication.
  • Understanding of functional reactive programming (RxSwift, Jetpack Compose).
  • Knowledge of Google Play/Android Auto or Apple MFi programs.


What we offer:


  • Fully remote and flexible work.
  • Competitive freelance B2B rate (15-30k net, depending on experience).
  • The chance to work on a cutting-edge IoT project with a highly skilled team.
  • A clear and fast recruitment process.


Recruitment process:


  1. Quick screening call with HR (45 min).
  2. Technical interview with live coding (max. 90 min).
  3. Final feedback within a couple of days.


If you’re a BLE pro and ready to jump into an exciting IoT project right now, let’s talk! 💡

Tech stack

    BLE

    master

    iOS

    advanced

    Android

    advanced

    Kotlin

    advanced

    Swift

    advanced

Office location