Senior Kotlin/Android Developer

About the role

We are looking for a Senior Kotlin/Android Developer to join our card‑machine development team in Stellenbosch for a 12‑month project. You will build and maintain secure Android functionality for merchant card machines, integrating with existing web and Java layers while helping to modernise legacy components.

Key responsibilities

• Design, build, test, and maintain Android applications and components using Kotlin.
• Integrate Kotlin payment functionality with the existing card‑machine web layer.
• Develop or maintain features in the TypeScript/JavaScript layer where needed.
• Work with the Java‑based device security layer and preserve its restrictions.
• Help migrate suitable functionality from the legacy web layer into Kotlin.
• Collaborate with product, testing, security, and other engineering teams to deliver production‑ready features.
• Contribute to code quality, testing, release readiness, and ongoing maintenance.

Required profile

• Senior‑level experience delivering production Android applications using Kotlin.
• Strong understanding of Android development and component integration.
• Experience with Java and existing Java‑based Android functionality.
• Practical TypeScript and JavaScript experience, ideally in web applications.
• Ability to work across application layers and support gradual modernisation.
• Strong problem‑solving and communication skills.
• Experience with payment systems, merchant devices, card machines or POS terminals; React or React Native experience is a plus.

Required skills

• Kotlin
• Android
• Java
• TypeScript
• JavaScript
• React
• React Native