# Senior Mobile Engineer, Kotlin and Cross-Platform at Hiya

- Company: Hiya
- What the company does: Backed by Balderton Capital.
- Company website: https://hiya.com
- Type: Startups
- Level: Senior
- Location: Seattle, US
- Work setup: Remote
- Pay: $170K to $228K base salary per year (USD)
- Posted: 2026-09-09
- Apply by: 2026-10-24
- Apply: https://jobs.ashbyhq.com/hiya/def2a8f3-554f-4d10-a3fc-8040c54a38dd
- Page: https://www.1752.vc/careers/jobs/hiya-senior-mobile-engineer-kotlin-and-cross-platform/

## About the role

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.

## What they're looking for

- Demonstrated Kotlin Multiplatform experience in production applications. Specifically shipping shared KMP code, or deciding where a shared boundary belongs
- Production code shipped outside your primary platform in the last two years, on iOS, backend, or web, that you can show us. Shipping on both iOS and Android is a strong plus
- Experience carrying a significant architecture or platform change through a mobile team, from proposal to adoption, including bringing other engineers along
- Comfort in the services behind the app: APIs, entitlements, analytics. You do not wait for a backend engineer to unblock a mobile feature
- A high quality bar with automation as the default. You build automation around repeatable failure modes and use device testing deliberately, for the things only a device can tell you
- Active use of AI coding agents. You separate planning from execution on non-trivial work and can say what has worked, what has not, and where you draw the line on trusting an agent's output

Tags: Engineering