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SumUp

Senior Backend Engineer

On site

Paris, France

Senior

Full Time

26-11-2025

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Skills

Communication Java Kotlin Kubernetes Training Architecture AWS Analytics Kafka PostGres

Job Specifications

About The Team

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 Fiscalization team will accelerate making the following countries fiscally compliant: Italy, Sweden, Norway, Belgium, Austria, and many other European countries. They will also start building the path for integrating with third parties and fiscalizing receipts.

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

About The Role

You will be working on secure backend systems to ensure our SumUp’s Point of Sale (POS) products are compliant in the different countries in our roadmap. Furthermore, you will work with the Fiscalization squad to understand the challenge in each market to design a unique solution to delivery.

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.

What You’ll Do

Build and maintain fiscal compliance solutions to enable SumUp's expansion across Italy, Sweden, Norway, Belgium, Austria, and other European markets.
Develop integrations with third-party services for receipt fiscalization and regulatory reporting systems.
Navigate SumUp's complex POS ecosystem and master fiscalization frameworks across multiple jurisdictions.
Collaborate with distributed squad members and stakeholders across 5+ cities in a hybrid environment.

You’ll thrive in this role if:

You have 5+ years experience in backend engineering with Java and/or Kotlin.
You have a strong understanding of fundamental system architecture, design principles, data modeling, and API design.
You have a strong experience with distributed and fault-tolerant systems.
You have user-level experience working with AWS and Kubernetes.
You have good knowledge of Kafka & Postgres.

Why you should join SumUp

Opportunity to work with a truly global, multicultural team (3,000+ people from 93 countries across 4 continents).
Competitive salary package & virtual stock option programme.
Learning & development budget for conferences and external training.
Corporate pension scheme, 25 days’ paid leave, and other great benefits.
A passionate, purpose-driven team that achieves incredible results together.
Regular breakfasts, team events, office parties & sports activities.
Break4me – 1-month sabbatical after 3 years of service.

Job Application Tip

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.

About the Company

SumUp is a leading global fintech company committed to levelling the playing field for small businesses. Founded in 2012, we’re the trusted partner of over 4 million merchants in 36 markets worldwide, providing simple and affordable tools that enable them to manage payments, business finances and customer relationships. Our diverse team of over 3,000 SumUppers, representing more than 90 nationalities and spread across 20 offices worldwide, is at the heart of our success. We embody the spirit of global collaboration and inn... Know more