Mobile Engineer (Kotlin Multiplatform) – Contract (Inside IR35)

London / Hybrid (2–3 days onsite)

£500 - £600 per day

We’re working with a client who is building a centralised mobile platform and looking for Mobile Engineers with Kotlin expertise to help deliver it.

This is not a short-term feature role. You’ll be working on a shared codebase across Android and iOS using Kotlin Multiplatform, helping scale a product used across multiple countries and markets.

What you’ll be doing:

• Building mobile features using Kotlin Multiplatform (KMP)

• Contributing to shared code across Android and iOS

• Working closely with Product, Design and Backend teams

• Improving performance, reliability and code quality

• Delivering features end-to-end

What they’re looking for:

• Strong mobile engineering experience

• Solid Kotlin knowledge (KMP or cross-platform exposure highly beneficial)

• Experience building production mobile applications

• Good understanding of APIs and mobile architecture

• Someone who can hit the ground running in a fast-moving environment

Contract details:

• Inside IR35

• £500 - £600 per day

• London – hybrid working (2–3 days onsite)

If you’re a mobile engineer interested in Kotlin Multiplatform and platform-level work, I’d be happy to share more details.