Responsibilities

Spam Blocker identifies unknown callers, blocks spam and scams, and screens suspicious calls before they ring. It’s a consumer product operating at the intersection of mobile platforms, real-time calling, and Hiya’s global reputation and security systems.
The team is small and owns Spam Blocker end to end, from the native apps and backend services to subscriptions, entitlements, and releases. We don’t split work by platform. Engineers move between Swift, Kotlin, and the backend depending on what the product needs.
You do not need equal depth on both platforms. We are especially interested in engineers with deep Kotlin and Android expertise who have already shown they can cross technical boundaries, and who want to become productive on both. The team has strong iOS depth today; this hire adds Android depth and works across both. If you want to spend your career inside one platform’s toolchain, this is not the team. If you want to broaden what you can own, you’ll have the room and support to do it here.
As a Senior Mobile Engineer you will ship features across both apps, own releases, and raise the team's engineering bar. This is an AI-native team. Coding agents carry much of the routine implementation, and part of the job is deciding where they help, where they do not, and building the tools and guardrails that let the team ship safely with them.
Design, build, and ship features across the iOS and Android apps, including the backend changes each feature needs
Own releases from cut to store on both platforms, and extend the release automation so it needs fewer people and catches more before it ships
Build the tests, instrumentation, and review gates that let a small team ship at high quality without a manual QA pass
Drive architecture decisions on the mobile codebases and see them through to adoption
Work with product and design to decide what we build, and bring a point of view on whether we should build it at all
Use coding agents where they create leverage, and improve the tools, guardrails, and workflows that let the team ship safely with them
What We Are Looking For
Demonstrated Kotlin Multiplatform experience in production applications. Specifically shipping shared KMP code, or deciding where a shared boundary belongs.

Senior Mobile Engineer, Kotlin and Cross-Platform at Hiya · LumiJobs

Senior Mobile Engineer, Kotlin and Cross-Platform

Responsibilities

Benefits

Company

Hiya

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