Senior Android Engineer (Kotlin & Jetpack Compose)

At Quento Technologies S.A., the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.

At Quento Technologies S.A. we empower our people to innovate and lead in delivering transformative ICT solutions to our clients worldwide. Our high-performing, dynamic, and collaborative environment fosters professional growth at every stage. Quento Technologies S.A. seeks a highly motivated and 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 work closely with product, design, backend, platform and QA teams to deliver high-quality, scalable mobile features across reusable UI components, networking, authentication, secure identity-verification journeys and release operations. Your responsibilities will entail: Own, develop and maintain the native Android application using Kotlin and Jetpack Compose; Build maintainable Compose features using established Android architecture patterns and Hilt dependency injection; Contribute to a modular codebase with dedicated application, network, core, reusable-component and design-system modules; Integrate backend services through the application networking layer, supporting authentication and API-based customer journeys; Integrate and maintain third-party SDKs and identity-verification capabilities, including Jumio-based journeys where applicable; Develop secure device and customer journeys in line with Android security and fintech requirements; Build and maintain reusable Jetpack Compose components aligned with the application design system; Use Kotlin Serialization and KSP-based tooling where required by the codebase; Write and maintain unit, integration and UI tests, and contribute to reliable, testable software design; Support separate application flavors and environment-specific configuration for development and release builds; Contribute to Android build, release and distribution processes, including Firebase App Distribution and production monitoring with New Relic; Participate in code reviews, technical design discussions and ongoing improvements to application quality and architecture; Ensuring that all activities and duties are carried out in full compliance with regulatory requirements and supporting the continued implementation of the Group Anti-Bribery and Corruption Policy.

Requirements University degree in Computer Science, Engineering or a related field; Minimum of 5 years of professional experience in Kotlin and native Android development; Hands-on experience building production Android features with Jetpack Compose; Solid understanding of 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; Understanding of Android security best practices, including secure token and credential storage; Experience with Gradle Kotlin DSL and dependency management using version catalogs; Proficiency with Android Studio, debugging tools and performance-analysis tools; Experience writing unit and UI tests using appropriate Android testing frameworks; Familiarity with Git-based collaborative development workflows and code reviews; Experience working in an Agile delivery environment; Strong communication, ownership and collaboration skills.

Nice to Have: Experience with Jumio or another KYC or ident