Senior Mobile App Engineer (Kotlin)

About the role

ST Engineering is seeking a Senior Mobile App Engineer to design, develop, test and enhance native Android applications that support mission‑critical systems for defence and public security customers worldwide.

Key responsibilities

• Develop and maintain native Android applications using Kotlin.
• Build modern, responsive user interfaces with Jetpack Compose and Android UI frameworks.
• Write clean, maintainable, and testable code following industry best practices.
• Collaborate with backend engineers to integrate RESTful APIs and services.
• Participate in Agile development cycles, including sprint planning, code reviews and retrospectives.
• Debug, troubleshoot, and optimise application performance and reliability.
• Contribute to CI/CD pipelines, automated builds and testing.
• Conduct unit testing, UI testing and support user‑acceptance testing.
• Continuously improve app quality through monitoring, feedback and iteration.
• Document technical designs and implementation details.

Required profile

• Strong problem‑solving and analytical skills.
• Ability to work in a fast‑paced, mission‑critical environment.

Required skills

• Kotlin
• Jetpack Compose
• Android UI frameworks
• RESTful APIs
• Agile development
• CI/CD pipelines
• Unit testing
• UI testing