Senior Android Developer, KMP - Point-of-Sale Tribe

Sumup; Paris; Sur place; EUR 60 000 - 80 000; Plein temps

Résumé du poste

SumUp is seeking a Senior Android Developer in Paris to enhance its POS solution SuperApp. You will be pivotal in developing user-centric mobile applications and collaborating with cross-functional teams to implement a Kotlin Multiplatform strategy. This role offers significant opportunities for professional growth and contributions to impactful fintech products.

Prestations

Learning & Development budget for conferences

Participation in stock ownership program

30 days leave after 3 years (Sabbatical)

Global offsites and hackathons

Qualifications

• 5+ years experience in mobile engineering with Android / Kotlin.
• 2+ years working with Jetpack Compose.
• Solid understanding of software design patterns and modular architectures.

Responsabilités

• Build new features for the item catalog within the SuperApp.
• Help improve the architecture of the application.
• Enhance and maintain the unified Android app across 60+ countries.

Connaissances

Android Development

Kotlin

Jetpack Compose

MVVM

MVI

Reactive Programming

Clean Code Practices

Description du poste

SumUp’s Point-of-Sale (POS) solution empowers cafes, shops, bars, hair salons, and other businesses to operate efficiently and grow. It offers a wide range of features, including product catalogs, inventory management, business analytics, compliance support, and loyalty tools.

Our POS solution integrates seamlessly into the SumUp SuperApp, which supports both our proprietary register hardware and mobile devices like tablets and phones.

As a Senior Android Developer you’ll collaborate with a dynamic, cross-functional team of Product Managers, Product Designers, Engineering Managers, and fellow engineers.

About the role

We’re evolving toward a Kotlin Multiplatform (KMP) strategy, enabling shared development across Android and iOS. In this role, you’ll learn, refine, and help implement this technology, shaping the future of our mobile apps.

You’re a developer who values user-centric design, precision, and seamless collaboration. You bring structure to communication and thrive in a cross-functional environment.

This role is on-site in Paris, where face-to-face interactions spark innovation and teamwork.

What you’ll do

Build new features for the item catalog within the SumUp SuperApp

Help improve the architecture of the application

Enhance and maintain our unified android app, distributed across 60+ countries, ensuring high-quality, scalable solutions

Shape the product’s evolution by identifying opportunities for improvement and contributing to daily decision-making

Write thorough documentation and implement robust testing for features before shipping

Collaborate closely with Designer, Product Manager and Android engineers to deliver a unified UX experience across platforms

Coach and mentor other engineers

You’ll thrive in this role if :

You have 5+ years experience in mobile engineering with Android / Kotlin

You have 2+ years of experience working with Jetpack Compose.

You have a solid understanding of software design patterns (e.g., MVVM, MVI) and expertise in building modular, scalable app architectures.

You have good knowledge of reactive programming (Flow, Coroutines and Concurrency).

You have a strong grasp of testing best practices : knowing what to test, why, and how to write resilient tests.

You strive for clean code, and you are flexible to balance pragmatism and perfection.

You have a keen interest in multi-platform development using Kotlin Multiplatform.

Why you should join SumUp

The opportunity to work on large scale fintech products used by millions of small businesses around the world

A dedicated annual Learning & Development budget for attending conferences and / or advancing your career through further education

Enrollment onto our virtual stock ownership program - you will own a stake in SumUp’s future success

You’ll attend global offsites and / or hackathons.

SumUp Sabbatical : 30 days leave after 3 years in the company

Job Application Tip

We recognise that candidates feel they need to meet % 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.