Senior iOS Engineer - Wearables + BLE

Fixed-term, Full or part-time · London, UK - Remote

Your mission

Botz is building the next generation of wearable intelligence, where hardware, real-time sensing, and AI come together into a seamless mobile experience.

This role is about owning the iOS application that connects directly to our wearable devices. You will build a product that is not only beautiful and intuitive, but also robust in the real world, where Bluetooth reliability, performance, and device integration truly matter.

What you’ll do

Own the iOS wearable app experience end-to-end, from architecture to UI polish
Build and maintain a reliable Bluetooth Low Energy (BLE) stack for our wearable devices
Implement pairing, reconnection logic, background behavior, and real-time data streaming
Collaborate closely with firmware and hardware teams to define protocols and debug device interactions
Ship user-facing features that combine wearable data, visualization, and intelligent experiences

Your profile

Must-have

5+ years of experience building and shipping production iOS apps in Swift
Track record of delivering apps used by real customers in production
Deep hands-on expertise with BLE and CoreBluetooth, including GATT services, notifications, reconnections, and edge cases
Experience working with connected devices such as wearables, IoT products, sensors, or medical hardware
Strong attention to detail in UI, interaction quality, and product finish
Comfortable debugging across mobile ↔ Bluetooth ↔ embedded systems

Nice to have

Android development experience (Kotlin)
Experience with real-time data visualization or health/fitness applications
Exposure to AI-driven mobile features (personalization, chat-based UX, insights)

Why us?

Work at the intersection of wearables, AI, and next-gen robotics
High ownership role on a deeply technical consumer product
Fast-moving team with direct impact from your work
Competitive salary, equity, and flexible work arrangements

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