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This job expired on 19/09/2026. It no longer accepts applications.
Mobile Software Engineer (Kotlin Multiplatform)
Jack & Jill · Londres
Job description
About the role
Join Cauli, a fast‑growing climate‑tech startup, as the lead mobile engineer. You will own the migration of native iOS and Android applications into a unified Kotlin Multiplatform codebase while delivering new consumer‑ and client‑facing features.
Key responsibilities
- Develop and maintain mobile apps using Kotlin, including a point‑of‑sale client app and consumer tools.
- Architect and execute the transition to a single Kotlin Multiplatform codebase.
- Integrate lightweight web apps with Apple Wallet and Google Wallet for container tracking.
- Collaborate directly with the Head of Tech and contribute to backend services (PHP/Laravel) and occasional Python work on smart‑bin hardware.
Required profile
- 1–2 years of professional mobile engineering experience with production‑level Kotlin.
- Strong native Android development skills and a keen interest in Kotlin Multiplatform.
- Startup mindset: comfortable touching backend code and hardware integrations while maintaining clean, production‑quality code.
Required skills
- Kotlin
- Kotlin Multiplatform
- Android development
- iOS development
- PHP
- Laravel
- Python
- Linux
- Apple Wallet integration
- Google Wallet integration
What we offer
- High autonomy and ownership of a critical migration project.
- Opportunity to work with prestigious enterprise clients such as BT and NHS Barts Trust.
- Equity options as an early‑team member.
- Collaborative, founder‑led environment focused on solving an environmental crisis.
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Jack & Jill
Londres
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