Senior/ Engineer - Mobile App (Kotlin)

ST Engineering; Singapore; On-site; SGD 60,000 - 110,000; Full time

Job summary

ST Engineering is seeking a Senior/Engineer - Mobile App (Kotlin) to design, develop, test, and enhance mission‑critical Android applications at ST Engineering Hub, SG. You will collaborate with backend engineers, participate in Agile cycles, and contribute to CI/CD pipelines, ensuring robust, scalable mobile solutions across defense and public security domains.

The role emphasizes hands‑on programming, strong problem solving, and clear documentation to deliver high‑quality apps aligned with

Qualifications

• 2 years of Android development (Kotlin) experience preferred.
• Strong Kotlin fundamentals: coroutines, flows, null safety.
• Experience with Android Jetpack components: ViewModel, LiveData/Flow, Navigation.
• Familiar with Jetpack Compose or modern Android UI development.
• Experience integrating REST APIs and handling JSON data.
• Knowledge of Git version control.
• Understanding of SDLC and Agile practices.
• Heads‑on, able to learn new languages/tech and work independently.
• Good communication and documentation skills.
• Team player with Can‑Do attitude.

Responsibilities

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

Skills

Android Kotlin

Kotlin Coroutines

Jetpack Compose

REST APIs

Git

Agile

DevOps

Independent learner

Communication

Tools

ViewModel/Lifecycle

LiveData/Flow

JSON handling

Job description

Title: Senior/ Engineer - Mobile App (Kotlin)

Job ID: 16181

Location: ST Engineering Hub, SG

Description

About ST Engineering

ST Engineering is a global technology, defence, and engineering group with offices across Asia, Europe, the Middle East, and the U.S., serving customers in more than 100 countries. The Group uses technology and innovation to solve real-world problems and improve lives through its diverse portfolio of businesses across the aerospace, smart city, defence, and public security segments. Headquartered in Singapore, ST Engineering ranks among the largest companies listed on the Singapore Exchange.

Our history spans more than 50 years, and our strategy is underpinned by our core values – Integrity, Value Creation, Courage, Commitment and Compassion. These 5 core values guide every aspect of our business and are embedded in our ST Engineering culture – from the people we hire, to working with each other, to our partners and customers.

About Our Line Of Business – Mission Software & Services

Our Mission Software & Services business provides leading-edge mission critical command, control, and communications (C3) systems with secured IT infrastructure and managed services. We support our client’s innovation journey through design thinking, analytics, and AI-enabled decision support with our full suite of cloud computing solutions. We provide intelligent, actionable insights and sustainable solutions to our valued partners in diverse industries including defence, government, and commercial sectors.

Together, We Can Make A Significant Impact

Join us in the journey of a global software service provider and step into the role of a crucial Software Developer; to design, develop, test and enhance mission-critical software and systems. You are empowered to shape the future and drive technological advancement in the Defence and Public Security sector across Asia, Europe, the Middle East, and the U.S., serving customers in more than 100 countries. Dive into the intricacies of implementing, integrating, and troubleshooting software applications, ensuring they meet and exceed expectations. Your dedication to problem-solving and analytical skills will drive our innovative projects forward, while maintaining stringent compliance and documentation standards.

Be Part of Our Success

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

Qualities We Value

• 2 years of experience in Android development (Kotlin) preferred
• Strong understanding of Kotlin fundamentals (e.g. coroutines, flows, null safety)
• Experience with Android Jetpack components (e.g. ViewModel, LiveData/Flow, Navigation)
• Familiarity with Jetpack Compose or modern Android UI development
• Experience integrating REST APIs and handling JSON data
• Knowledge of Git version control
• Understanding of software development lifecycle and Agile practices
• Familiar with DevOps is value added
• Must be hands‑on and enjoy programming.
• Ability to learn new languages and technologies.
• Able to work independently and self‑motivated.
• Good communication and documentation skills.
• Strong customer‑service oriented and possess Can‑Do attitude.
• Team Player, Willing to learn

Our Commitment That Goes Beyond the Norm

• An environment where you will be working on cutting‑edge technologies and architecture.
• Safe space where diverse perspectives are valued, and everyone’s unique contributions are celebrated.
• Meaningful work and projects that make a difference in people’s lives.
• A fun, passionate and collaborative workplace.
• Competitive remuneration and comprehensive benefits.