Senior Android Engineer- Hardware

The Hardware tribe builds the technology that turns everyday devices into secure, reliable card readers, from Bluetooth-connected dongles to fully in-house Tap to Pay on Android. You'll join a team solving genuinely hard problems: keeping payments working across flaky Bluetooth connections, handling online and offline flows without losing a transaction.

What you'll do

• Build and maintain Android applications for card readers, SDKs, and the SuperApp, covering both new features and improvements to existing systems
• Work on Bluetooth Low Energy connections, online and offline payment flows, and Tap to Pay functionality
• Refactor and modernise legacy code to improve reliability, performance, and maintainability
• Contribute to testing practices, including unit and integration tests, to raise overall code quality
• Collaborate with peers and stakeholders across the team to manage priorities and shape solutions to technical challenges

What you'll need

• Several years of professional Android development experience, with solid proficiency in both Java and Kotlin
• Strong knowledge of clean architecture principles and hands-on experience maintaining Android SDKs
• Experience of writing unit and integration tests, and comfort refactoring legacy code without breaking existing functionality
• Familiarity with CI/CD pipelines, such as GitHub Actions, and an interest in improving build and release processes
• Ability to adapt to ambiguity and shifting priorities, with strong communication skills for working independently with stakeholders

What they offer

• Annual L&D budget of €2000 for conferences and further education
• Corporate pension scheme with up to 20% matching contribution
• 28 days of paid leave plus public holidays and special leave days
• 1-month sabbatical after 3 years of service
• Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches
• Virtual Stock Option programme