At a Glance
- Tasks: Develop mobile applications using Kotlin and migrate to a unified KMP codebase.
- Company: Cauli is the UK's largest reusable packaging provider, led by Forbes 30 Under 30 CEO Josephine Liang.
- Benefits: Receive equity options as an early team member and a competitive salary of £40k–£45k.
- Other info: Location: London, UK; work with major clients like BT and NHS.
- Why this job: Lead the transition to a unified Kotlin Multiplatform codebase in a mission-driven climate tech startup.
- Qualifications: 1-2 years of mobile engineering experience with production-level Kotlin skills required.
The predicted salary is between 40000 - 45000 £ per year.
Cauli is the UK's largest reusable packaging provider, led by Forbes 30 Under 30 CEO Josephine Liang. They utilize IoT and AI-driven technology to replace single-use waste at scale, already preventing over 1.6 million pieces of packaging waste for major clients like BT, the NHS, and the University of Surrey.
Join a mission-driven climate tech startup as the lead for mobile engineering. You will own the transition to a unified Kotlin Multiplatform codebase, shipping features across consumer and client-facing apps. This hands-on role offers real ownership, direct collaboration with the Head of Tech, and the chance to build infrastructure that eliminates environmental waste.
Location: London, UK
Why this role is remarkable:
- Lead the migration of native iOS and Android apps into a unified Kotlin Multiplatform (KMP) codebase with high levels of autonomy and ownership.
- Join a fast-growing, founder-led team that has already scaled to 50+ sites and works with prestigious enterprise clients like BT and NHS Barts Trust.
- Receive meaningful equity options as an early team member, ensuring you share in the financial success of a company solving a critical environmental crisis.
What You Will Do:
- Develop and maintain mobile applications using Kotlin, including a point-of-sale client app and consumer-facing tools used in the real world.
- Architect and execute the migration to a unified KMP codebase while integrating lightweight web apps with Apple and Google Wallets for container tracking.
- Support the broader tech ecosystem by contributing to PHP/Laravel backends and occasionally working with Python on Linux-based smart bin hardware.
The ideal candidate:
- Has 1–2 years of professional mobile engineering experience with production-level Kotlin skills and solid native Android development expertise.
- Possesses a strong interest or experience in Kotlin Multiplatform (KMP) and is comfortable working across both Android and iOS targets.
- Demonstrates a versatile startup mindset, willing to touch backend code and hardware integrations while maintaining clean, production-quality code.
Mobile Software Engineer (£40k–£45k + Equity) at Cauli employer: Jack & Jill
Cauli is pioneering reusable packaging solutions, preventing over 1.6 million pieces of waste. Located in London, they offer meaningful equity options and a chance to work with prestigious clients like BT and the NHS. Join a fast-growing team dedicated to solving environmental challenges.
