Senior Native Android EngineerBewerbentime type: Req1586927Senior Native Android EngineerCountry:IT STARTS HERESantander ( is evolving from a global, high-impact brand into a technology-driven organization, and our people are at the heart of this journey. Together, we are driving a customer-centric transformation that values bold thinking, innovation, and the courage to challenge what's possible. This is more than a strategic shift. It's a chance for driven professionals to grow, learn, and make a real difference.We embrace a strong risk culture and all our professionals at all levels are expected to take a proactive and responsible approach toward risk management. Our Chief Data & Artificial Intelligence Officer (CDAIO) division is building a world-class AI & Data team to make a difference in the lives of over 170 million people worldwide, through one of the largest banks in the world.

We are undergoing one of the biggest transformations in our history and technology is at the heart of our strategy. Join our team to play a part in one of the most important technological projects for the financial sector in the world. We embrace a strong risk culture and all our professionals at all levels are expected to take a proactive and responsible approach toward risk management.THE DIFFERENCE YOU MAKE*CDAIO/ AI TECH is looking for a Senior Native Android Engineer based in Madrid.We are seeking a Senior Native Android Engineer to build advanced mobile solutions using Kotlin and Jetpack Compose.

You will deliver concrete products — production apps and reusable, published SDKs — within the Grupo Santander platform ecosystem, applying solid software architecture and CI/CD practices to ensure quality, maintainability, and scalability. This role works on product SDKs (e.g. an AI chatbot Compose component) that sit on top of the shared Santander Android platform, so the ability to read, integrate with, and reason about platform building blocks is essential.Professional Experience A proven track record of at least 4 years of exclusive experience in native Android development. (Experience on projects composed of libraries or that publish SDKs as a product.



(Demonstrable experience on projects with accessibility requirements.(Experience in hybrid mobile technologies (React Native, Flutter, Xamarin) will not be considered. (Experience on dual iOS/Android projects will not be considered, as the specific dedication to each platform cannot be determined. (Personal or freelance projects will not be considered unless carried out in a collaborative team environment. (Languages Native level in Spanish. (English — minimum B2 (B2–C1 strongly preferred).

This is a strict requirement: all code, KDoc, commits, PRs, changelogs, and platform documentation are written in English, and the SDK/platform is shared across international teams. (Hard SkillsGlobal: Mastery of Kotlin as a programming language. (Strong knowledge of visibility and extensibility in Kotlin (internal boundaries, extension functions, API surface control). (Version control systems, preferably Git. (GitHub Actions/Workflows, Jenkins...) (Agile development methodologies. (PR creation/review workflow and QA quality-control practices. (Development, deployment, and version control of internal or public libraries (publishing to a Maven/Artifactory repository; Data Access: Remote data libraries: Local data libraries: JSON serialization with kotlinx.Strong knowledge of Compose optimization and performance (stability, recomposition control, immutable collections — kotlinx-collections-immutable). (UX: creation of animations, transitions, and UI interactions. (Screenshot testing with Paparazzi or similar tools (e.g. Shot) to guarantee visual and functional UI quality. (Knowledge of how to structure the view hierarchy so it is navigable by screen readers. (Accessibility testing tools: Ability to identify and fix accessibility issues detected through TalkBack testing. (Testing: Solid knowledge defining unit tests with JUnit 5 (annotations, assertions, test execution). (Creating and managing mocks and stubs of objects and services,



simulating behaviors and responses for different test scenarios. (JaCoCo) to measure and ensure unit tests cover as much code as possible. (Code análisis: Static analysis tools: Quality gates with SonarQube. (Comfort working within an internal build platform (GS Platform / Gluon): Gradle with Kotlin DSL, Version Catalogs, Convention Plugins, Android Gradle Plugin, and dependency resolution/publishing via JFrog Artifactory.

Understanding of a multiplatform-capable Design System (Kotlin Multiplatform) based on Compose Foundation (no Material coupling), configurable primitives with explicit parameters, expect/actual source sets, and @Experimental API annotations.

Preferred) Experience with Gradle as the project configuration tool: Version Catalogs for dependency management, shared logic via Convention Plugins, Gradle scripting, Android Gradle Plugin, and creating Gradle plugins. (Preferred) Use of application performance analysis/improvement tools: Google Maps. (Preferred) Additional testing knowledge: TDD, instrumented tests...(Preferred)WE VALUE YOUR IMPACTYour contribution matters, and it's recognized. We're enable our teams to go beyond through integral opportunities and broad career paths.

Enjoy a hybrid working models—some days remote, some days onsite with your team—along with flexible hours.

Access hundreds of courses on our platforms, including exclusive access to our global learning space: Receive a highly competitive salary with performance-based bonuses, motivating you to keep growing with us.

Benefit from preferential banking terms, special interest rates on loans, life insurance, and more.

Through BeHealthy, our global wellness programme, we promote Holistic wellbeing. That's why we offer childcare support and family-friendly programmes tailored to each life stage.

Get access to Santander Contigo, our program for employees and their families offering legal, emotional, and administrative advisory services.

- Extra benefits. LOCAL COMPLIANCE**Santander is proud of being an organization where there are equal opportunities regardless of age, gender, disability, civil status, race, religion or sexual orientation.

📌 Senior Android Engineer with English (Madrid)
🏢 Banco Santander
📍 Madrid