Senior Android Engineer

Navan; Greater London; On-site; GBP 70,000 - 95,000; Full time

Job summary

Navan is seeking a Senior Android Engineer to design, build, and enhance our mobile applications in the business expense management space. You will work with an international team of engineers and domain experts to deliver new features and drive product quality.

You will lead complex projects, make architectural judgments based on data, review code, and contribute to a strong Android infrastructure to keep delivery fast and reliable. Kotlin, Jetpack Compose, and MVVM are core to our stack.

Qualifications

• 5+ years of Android development experience.
• Strong understanding of the Android lifecycle.
• Proficiency in Kotlin and Jetpack Compose.
• Experience with MVVM and coroutines.
• Familiar with CI/CD and automated testing.
• Experience with Android libraries and frameworks.

Responsibilities

• Design, build, and ship Android features in a large production app.
• Contribute to Android infrastructure for fast, reliable delivery.
• Review code and write technical documentation to improve practices.
• Lead development initiatives and improve architecture.
• Collaborate on technology, design, and product direction with peers.
• Triage issues and respond quickly to customer problems.

Skills

Android development

Kotlin

Jetpack Compose

Android SDK

Coroutines

MVVM

Education

Bachelor's degree in Computer Science

Tools

CI/CD

Espresso

Kakao

Dagger/Hilt

OkHttp/Retrofit

Job description

Navan is looking for a Senior Android Engineer to design, build, and enhance our mobile applications in the business expense management space. As a key contributor, you will work closely with our international team of engineers and domain experts to build new features and improve our product. We are looking for engineers who can deliver high-quality work, can lead complex projects and contribute to clear technical direction.

What You'll Do

• Design, build, and ship Android features in a large production app;
• Contribute to Android infrastructure so delivery stays fast and reliable.
• Review code, give feedback to other developers, and write technical documentation to improve coding practices and code quality.
• Lead development initiatives, whether by introducing new technologies or by raising the bar for existing code, practices, or architecture.
• Take part in decisions with peers and stakeholders on technology, design, and product direction.
• Triage product and application issues, and respond quickly to customer problems.

What We're Looking For

• 5+ years of experience developing high-quality Android applications.
• Strong understanding of the full app development lifecycle.
• Proficiency in Kotlin and building user interfaces with Jetpack Compose.
• Solid understanding of the Android SDK:
• App components (Activities, Services, receivers, providers) and how they fit together.
• How the Android applications you develop fit into the Android OS lifecycle: notifications, deep links, battery modes, network state, persisting data, and permissions.
• Performance tuning and optimization.
• Gradle builds and modules.
• Strong understanding of concurrency practices and experience working with coroutines;
• Must be capable of making architectural judgment calls based on real data and requirements.
• Working knowledge of MVVM and standard multi-tier architecture.

Nice to Have

• Bachelor's degree in Computer Science or a related technical field.
• Experience with CI/CD, automated testing, and publishing to the Play Store.
• Solid foundation in data structures and algorithms, with a focus on delivering testable, scalable, and maintainable code.
• Experience using AI / LLM tools in day-to-day development, including how to keep quality, review standards, and security intact when you use them.
• Experience with modern Android frameworks such as Dagger/Hilt and OkHttp/Retrofit,
• Experience building automated test suites with Espresso/kakao and a clear view of what belongs in unit, integration, and UI tests.
• Familiarity with:
• Accessibility best practices for mobile applications.
• OAuth, mobile app authentication, and data safety.
• Material Design principles, mobile UX practices, and patterns

Navan uses AI-assisted Automated Employment Decision Tool (Metaview) to assist with evaluating resumes against job qualifications for this role. All final decisions are made by human recruiters and hiring managers.

Human oversight

Metaview does not automatically reject candidates or make final hiring decisions. Our recruiters and hiring managers review all outputs and make the final hiring decision regarding every application.

• Your rights: If you prefer to have your application reviewed without AI assistance, you may request a human evaluation by entering your email here. Your decision to do so will not affect how your candidacy is evaluated.

Please refer to our Candidate Privacy Notice for more information about our processing of personal data, and your rights.