Senior Native Android EngineerBewerbentime type: Heute ausgeschriebenjob requisition id: Req Senior Native Android EngineerCountry:**IT STARTS HERE**Santander ( 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 Skills****Global:*** 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 IMPACT****Your contribution matters**, and it’s recognized. We’re **enable our teams to go beyond** through global opportunities and broad career paths.* Enjoy a **hybrid working models**—some days remote, some days onsite with your team—along with adaptable 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 - (Financial Services) (Madrid)
🏢 Banco Santander
📍 Madrid