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About the Role

As an Android Engineer in SumUp's Hardware Tribe, you will be part of a skilled cross-functional team, collaborating with Product Managers, Backend Engineers, iOS Engineers, and Product Designers. You will also engage with the broader Mobile chapter globally. Your responsibilities will include improving Bluetooth implementation reliability in the Android SumUp app and SDK, implementing user-facing features for card reader interaction, and contributing to technical roadmaps. The ideal candidate is a mobile engineer with a product mindset, capable of owning features and adapting to changing priorities.

Responsibilities

Ship payment-related features and services within the Android ecosystem, supporting SDKs and the SuperApp.
Refactor and enhance existing solutions, including Bluetooth Low Energy connections, online/offline payments, and tap-to-pay functionality.
Improve the reliability and performance of the Android ecosystem.
Work closely with the team to drive the roadmap and design the developer experience.

Requirements

Comfortable with Kotlin, Java, and the Android framework.
Good knowledge of architectural design patterns such as MVVM and MVI.
Experience ensuring modularized and scalable app architecture.
Knowledge of testing methodologies and writing flexible tests.
Care about user interaction, usability, and attention to detail.
Strive for clean code while being pragmatic.

Skills

Kotlin
Java
Android framework
MVVM
MVI
Bluetooth Low Energy
Mobile development
App architecture
Testing
Clean code

Location

Berlin

Work Type

On-site

Benefits

Dedicated annual Learning & Development budget
Virtual stock ownership program
Corporate pension scheme
28 days paid leave + 1 for birthday
Global offsites and/or hackathons
Urban Sports Club subsidy
Kita placement assistance
Subsidized office lunches
Babbel language platform subscription

About the Company

In Hardware, we are passionate about creating beautifully designed card payment devices and accessories that enable merchants to start, run, and grow their businesses.
We deal with a diverse range of engineering topics including industrial and electronic design, embedded systems, mobile apps, and backend services.
We believe in open communication and constant learning over strict rules.
We are looking for individuals who want to innovate and help millions of small independent merchants succeed.

Equal Opportunity

We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.