Backend Engineer

🚀 Be part of a movement to change the way Europe pays

In today’s digital world, payments often still feel outdated: random delays and confusing rules make it harder than it should be to pay and get paid. The European Payments Initiative (EPI) is here to change all that, forever.

With Wero, our digital wallet, we make sending and receiving money simple, seamless and secure across France, Belgium and Germany, with more countries and omnichannel solutions coming soon. Supported by 14 major banks and the two largest European acquirers, EPI is building a new, proudly European payment system: easy, instant and transparent, all for the greater good.

🔎 What's In It For You

Join EPI as a Backend Engineer and become part of a bold movement to transform how Europe pays. This isn’t just another payment solution, it’s a once-in-a-generation opportunity to help build a unified, secure, and seamless European payment ecosystem from the ground up. Your work will directly shape a product used by millions, backed by Europe’s leading banks, and designed to empower consumers across the continent.

🐝 About The Team

You’ll be part of a Pan-European Product and Engineering team that operates in an Agile environment. You’ll work closely, but fully remotely, with experts in Product Design, Web Dev, Mobile Dev, Backend Dev, QA and DevOps from Germany, France, the Netherlands, Poland, and other European locations.

You’ll collaborate daily with teammates across Germany, France, Spain, Latvia, the Netherlands, Poland, and other European locations.

💥 Your impact

Technical leadership and development

• Own and deliver backend features end to end, from API design and implementation to deployment, monitoring, and operational support.
• Lead the architecture and evolution of EPI’s cloud-based microservices, ensuring scalability, performance, security, and alignment with mobile and business needs.
• Define and uphold high code quality standards, apply best practices for maintainable and testable services, and ensure backend solutions integrate smoothly with mobile applications.
• Actively support mobile engineers by providing backend expertise, guidance on API usage, data contracts, and performance considerations.
  
  

Strategic decision-making

• Drive backend platform decisions with a clear understanding of both current product requirements and future growth, especially as they impact mobile experiences.
• Balance global platform consistency with mobile-specific needs, making pragmatic trade-offs where required.
• Identify opportunities to improve backend reliability, developer experience, and delivery speed for mobile and platform teams alike.
  
  

Cross collaboration

• Collaborate closely with mobile engineers, acting as a primary backend point of contact for mobile-related topics and initiatives.
• Work with product management, design, web, QA, and other backend teams to ensure aligned, well-communicated, and efficient delivery.
• Represent backend perspectives in cross-team discussions, ensuring clear ownership, shared understanding, and consistent backend practices across the organization.
  
  

💻 Technology stack

• Kotlin, Ktor, MongoDB, OpenAPI, Docker
• AWS, Event Sourcing, Kubernetes, Kotest
• Yarn, Nextjs , MUI, TypeScript
  
  

🕵🏻‍♀️ To succeed, you should meet at least 70% of these requirements

• 7+ years of professional experience in software development, including at least 5 years of back-end development.
• Proven experience in building scalable system architectures and familiarity with modern design patterns and REST API design, coupled with a dedication to clear technical documentation
• Ability to recognize and implement effective automated tests at suitable levels of involvement
• Proficiency in core backend technologies like Kotlin, Ktor, Docker, Kubernetes, AWS, MongoDB and Kafka
• Experience in implementing UI/UX that meets the user needs
• Experienced in Agile methodologies, adaptable to changing project needs and timelines
  
  

Nice to have:

• Experience in implementing UI/UX or frontend components, with an understanding of user-centric design principles
• Experience designing and implementing Backend-for-Frontend (BFF) services
• Familiarity with frontend or mobile integration concerns, including API contract design, performance considerations, and client-specific requirements
  
  

🪜 If this looks like you, the recruitment steps are:

• A first call with one of our recruiters
• Technical interview with one of our Senior Backend Engineers
• Final interview with the Engineering Manager and Product Manager
• Hopefully, an offer you can’t refuse
  
  

⛔ Turn back if …

• You're not passionate about web technologies or not willing to work in a fully remote environment
• You are not interested in delivering feature from end to end
• If you are not familiar with JVM languages
  
  

Otherwise apply!

🫶 Our commitment to equal employment opportunities

EPI offers the same job opportunities to all, without distinction of gender, ethnicity, religion, sexual orientation, social status, disability or age. EPI promotes the development of an inclusive work environment that mirrors the diversity of the clients our product is serving.