Mobile Software Engineer Equity at Cauli

Mobile Software Engineer (£40,000–£45,000 + Equity)

Company: Cauli – UK’s largest reusable packaging provider for the food service industry.

Salary: £40,000–£45,000 + Equity

Location: London, UK

As our first dedicated mobile hire, you will eliminate single‑use waste by building the infrastructure for reuse. You’ll own the migration to Kotlin Multiplatform, ship features across consumer and client‑facing apps, and work directly with our technical lead. This is a hands‑on role where your code directly impacts plastic pollution reduction.

• Direct ownership of a high‑stakes migration to Kotlin Multiplatform (KMP), shaping the future architecture of our mobile ecosystem from day one.
• Join a mission‑driven team that has already prevented 1.6 million pieces of waste, working with prestigious clients such as the NHS, BT, and major universities.
• Receive meaningful early‑employee equity in a fast‑growing startup led by a Forbes 30 Under 30 founder, ensuring you share in the company’s long‑term success.

• Lead the migration of separate iOS and Android applications into a unified Kotlin Multiplatform codebase to streamline cross‑platform feature delivery.
• Develop and maintain our point‑of‑sale client application using Kotlin and integrate lightweight web apps with Apple and Google Wallets.
• Collaborate across the stack by contributing to PHP/Laravel backend services and supporting IoT hardware running Python on Linux SBCs.

• Professional experience (1–2 years) in mobile engineering with production‑level Kotlin skills and a solid foundation in native Android development.
• Demonstrated enthusiasm for or experience with Kotlin Multiplatform, including the ability to handle KMP‑generated iOS frameworks and basic Swift
  
  UI integration.
• Versatile, startup‑ready mindset with the ability to navigate REST API integrations and a willingness to touch backend or hardware code when necessary.