Senior Android Engineer - App Platform (all genders)

Babbel.com - Lesson Nine GmbH; Berlin; Hybrid; EUR 60.000 - 80.000; Vollzeit

Zusammenfassung

A leading language learning platform in Berlin is looking for a Senior Android Engineer to enhance the Babbel app. You will design and develop core components while ensuring high-quality, scalable Android solutions. Your expertise in Kotlin, Java, and CI/CD management will bolster a collaborative environment focused on diverse technology implementation. The position offers flexible hours, 30 vacation days, and opportunities for professional growth in a welcoming and inclusive culture.

Leistungen

30 vacation days

Flexible working hours

Yearly learning & development budget

Mobility benefits

Discounted Urban Sports Club membership

Qualifikationen

• Developed several Android apps using Kotlin, Java, Jetpack libraries, and design patterns.
• Experience with building and maintaining CI/CD pipelines.
• Expertise with AI tooling and infrastructure for improving productivity.

Aufgaben

• Design and maintain core Android platform components and shared modules.
• Drive architecture decisions and ensure high-quality Android development.
• Participate in knowledge-sharing culture through code reviews and pair programming.

Kenntnisse

Kotlin

Java

Jetpack libraries

Coroutines

RxJava/RxKotlin

CI/CD pipelines

AI tooling

English (fluent)

Tools

Espresso

Mockito

Fastlane

Bitrise

GitHub Actions

Jobbeschreibung

We are looking for a full-time Senior Android Engineer to join our Babbel App Platform engineering team!

In your role as a Senior Android Engineer, your mission will be to change the future of language learning while working in a flexible and stimulating environment.

Working in a diverse team together with motivated colleagues, you will be collaborating and diving into different disciplines to broaden your knowledge in other fields of expertise as well as share your own. You will contribute to a great architecture and build the base of an easily extendable and well maintainable application.

We are using a hybrid approach to develop the self‑study learning experience. In your role, you will have the opportunity to work with a mix of native Android, native iOS and frontend Web technologies (e.g. React and Redux).

You will:

• Design and maintain core Android platform components, shared modules, and internal SDKs that power multiple feature teams
• Drive architecture decisions, establish best practices, and ensure scalable, high‑quality Android development across teams.
• Improve build systems, CI/CD pipelines and performance tooling
• Collaborate cross‑functionally to make informed decisions ranging from User Experience to API design
• Participate in our knowledge‑sharing culture: code reviews, pair programming, knowledge‑sharing sessions, feature demonstrations
• Maintain and proactively improve the overall technology stack and infrastructure of the Android app(s)

You have:

• Developed several Android apps using: Kotlin, Java, Jetpack libraries (Compose, Lifecycle, etc.), DI (Dagger/Hilt), Retrofit, WorkManager, Testing with Espresso, Mockito, and UI test
• In-depth knowledge of design patterns, particularly MVVM and MVI architectures.
• You have experience with Coroutines/Flows and RxJava/RxKotlin
• The ability to maintain and develop CI/CD pipelines, preferably with Fastlane, Bitrise, GitHub Actions
• Expertise with AI tooling and infrastructure, including LLM‑powered development tools (e.g., Cursor) and agentic AI systems, with the ability to apply them effectively to accelerate engineering workflows and improve productivity.
• Fluency in written and spoken English
• Experience with how a deliberate setup of process and tooling can be used to ensure delivery of high quality software
• Strong desire to learn new things and share knowledge with others
• Experience in mentoring other engineers

Please note that our company’s operating language is English, so you will need to be able to work in English.

Some perks of becoming a Babbelonian:

• Enjoy 30 vacation days. Plus family and life situation counseling.
• Set up the right schedule for you with flexible working hours and enjoy Jobbatical (up to 3 months working inside the EU and the UK), plus work from our fully equipped office with nap, faith and family rooms.
• Learn and grow with the internal learning opportunities, and use a yearly learning & development budget for external training. Learn languages with Babbel for free with your full access to Babbel.
• Take advantage of your mobility benefits options and a discounted Urban Sports Club membership.
• Be part of our DE&I Community Networks (such as FLINTA in Tech, and Queer Collective), attend cultural and regular social events.

Diversity at Babbel

As part of our ongoing journey towards building a diverse, equitable and inclusive company, we welcome everyone to apply, especially those individuals who are underrepresented in tech. We are a learning company, inside and out, and we encourage you to apply even if you do not fit all the technical requirements - all candidates are assessed based on skills, qualifications and on our business needs. Please state your pronouns in your application, and let us know if you’d like to be addressed by a name other than the one appearing on your official documents. If you have a disability or special need, feel welcome to inform us, so that we can provide you with the proper assistance in the application process.