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Kevych Solutions
Open role>1 month

Senior Mobile Engineer

Kevych SolutionsUkraine
Work model
Remote
Experience
5+ years
Employment
Not specified
Compensation
Not disclosed
Technology signal
9 tags

Technology context

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AILLMCloudBackendAPIKotlinSwiftRESTFirmware

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Role description

We're looking for a Senior Mobile Engineer to take ownership of the iOS side of a Kotlin Multiplatform product. You'll work primarily with Swift and Kotlin, contributing to shared business logic and platform-specific components. The product is built for functional fitness and CrossFit and includes hardware-adjacent functionality such as concurrent BLE sessions, firmware updates, high-frequency sensor data capture, reliable upload to the cloud, and Apple Watch integration. This is a mobile-focused role for an engineer who is comfortable working beyond the UI layer and taking ownership of technical decisions and product quality.

  • Own the iOS app: architecture, Swift/KMP interoperability, quality, and releases;
  • Contribute to Kotlin Multiplatform shared modules covering device, workout, networking, and storage;
  • Build and maintain BLE, firmware update, and Apple Watch integrations;
  • Handle high-frequency sensor data end to end: capture, persistence, and cloud upload;
  • Work on LLM-backed product surfaces in the client;
  • Collaborate with Android/KMP and backend teams on contracts and cross-platform changes;
  • Pick up backend work when it unblocks the product, including BFF routes, internal APIs, and the contracts the apps depend on;
  • Raise the bar on code reviews, architecture, and technical decisions.
  • Senior-level production iOS with 5+ years of experience in Swift, including apps that go beyond being a UI layer over a REST API;
  • Real Kotlin Multiplatform experience, or strong enough Kotlin and native interop skills to become productive in a multi-module KMP codebase quickly (expect/actual, shared managers, XCFramework, Swift consumption);
  • Comfortable with concurrency, including Swift concurrency and Kotlin coroutines, particularly in device and networking code;
  • Experience with at least one of the following: CoreBluetooth/BLE, watchOS or companion apps, firmware/OTA, or high-throughput local data pipelines;
  • Uses AI tools in daily work, with good judgment about when they help and when they do not;
  • Takes ownership of quality, including reviews, architecture, and how the work gets done;
  • Clear written and spoken English (B2+);
  • Working hours: 15:00 - 23:00 (Kyiv time) - preferred working hours, but the schedule can be adapted.