Senior Android Engineer (Kotlin & Jetpack Compose)

Location: Athens, Attica, Greece

Workplace: hybrid

Employment Type: full

Description

We are looking for an experienced Senior Android Engineer (Kotlin & Jetpack Compose) to take ownership of a modern native Android application built with Kotlin, Jetpack Compose, and a modular Gradle architecture.

In this role, you will collaborate closely with product, design, backend, platform, and QA teams to deliver secure, scalable, and high-quality mobile features, including reusable UI components, API integrations, authentication, identity-verification journeys, and release operations.

Key Responsibilities

• Own, develop, and maintain the native Android application using Kotlin and Jetpack Compose
• Build maintainable Compose features using modern Android architecture patterns and Hilt dependency injection
• Contribute to a modular Android architecture, including application, network, core, reusable-component, and design-system modules
• Build and maintain reusable Jetpack Compose components aligned with the application design system
• Integrate backend services, APIs, authentication, and customer journeys
• Integrate and maintain third-party SDKs and identity-verification capabilities
• Develop secure device and customer journeys following Android security best practices
• Use Kotlin Serialization and KSP-based tooling
• Write and maintain unit, integration, and UI tests
• Manage application flavors and environment-specific configurations
• Support Android build, release, and distribution processes
• Work with Firebase App Distribution and production monitoring tools
• Participate in code reviews, technical design discussions, and architecture improvements
• Collaborate with cross-functional teams to continuously improve application quality and performance

Requirements

• University degree in Computer Science, Engineering, or a related field
• Minimum 5 years of professional experience in Kotlin and native Android development
• Strong hands-on experience with Kotlin and Jetpack Compose
• Solid understanding of modern Android application architecture and state-driven UI development
• Hands-on experience with Hilt dependency injection
• Experience with modular Android applications and reusable components or libraries
• Experience integrating backend APIs, authentication or identity services, and third-party SDKs
• Experience with Kotlin Serialization and familiarity with KSP-based code generation
• Good understanding of Android security best practices, including secure token and credential storage
• Experience with Gradle Kotlin DSL and dependency management using version catalogs
• Strong knowledge of Android Studio, debugging, and performance-analysis tools
• Experience writing unit and UI tests using Android testing frameworks
• Familiarity with Git-based development workflows and code reviews
• Experience working within an Agile environment
• Strong communication, collaboration, and ownership skills

Nice to Have

• Experience with Jumio or another KYC/identity-verification SDK
• Experience developing reusable Jetpack Compose design systems and component libraries
• Experience with Firebase App Distribution
• Experience with New Relic mobile monitoring and production observability
• Experience with product flavors and environment-specific Android configurations
• Experience in fintech, wallets, payments, or financial-services mobile applications
• Knowledge of Android CI/CD pipelines, particularly Azure DevOps
• Familiarity with Fastlane and Android release automation
• Familiarity with Kotlin Multiplatform (KMP)

You will be a great candidate for us if you

• Have strong hands-on expertise in Kotlin and modern native Android development
• Enjoy building high-quality applications using Jetpack Compose
• Are comfortable taking ownership of complex mobile applications and technical decisions
• Care about application security, performance, scalability, and user experience
• Have experience working with modular architectures and reusable components
• Enjoy collaborating across product, design, backend, QA, and platform teams

Benefits

Why join inventYOU

• Work with modern Android technologies including Kotlin, Jetpack Compose, and modular architectures
• Build secure and scalable mobile applications and customer journeys
• Contribute to reusable components and modern mobile architecture
• Collaborate with experienced mobile, backend, product, and platform professionals
• Continue developing your expertise in modern Android engineering