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Senior Software Engineer (Java) - Payments Platform

Sofia, Bulgaria · Engineering

In Sofia’s Payments Tribe, our goal is to build a global financial ecosystem while turning transactions into interactions.

We started with mPOS 7 years ago and now our portfolio includes invoicing, P2P, debit card, e-commerce and other card not present solutions that are still in the oven.

At SumUp our local cross-functional teams are empowered to bring their ideas to life through autonomy and no-blame culture. We believe in building projects around motivated individuals, giving them the environment and support they need, and trusting them to get the job done.

Currently we are looking for Senior Java Engineers for several of our sub-teams working on key parts of our proprietary payments processing platform. It is responsible for ingesting global SumUp transactions for millions of customers to achieve fast, cost efficient, accurate and consistent flow of payment data to various, in-house developed & 3rd party products.

We are currently scaling and re-writing it in Java (Spring Boot). You would have the opportunity to participate in the design and development of the new payments platform towards event-driven microservices architecture. 

What you’ll do

  • Co-design, develop and extend/support the new payments processing platform 

  • Participate in API design and implementation for both internal APIs and those exposed to our third-party integrators

  • Help your team to deliver business value by taking decisions related to backend and actively participating in the product discussions

  • Provide comprehensive documentation, good test coverage, and improve code quality

  • Collaborate with other software developers, QA and DevOps engineers to ensure smooth deployment, continuous integration, and support for the software that we deliver

  • Actively participate in code reviews with other software engineers

You’ll be great for this role if

  • You have previous experience as a backend engineer.

  • You have relevant experience with JVM based programming languages.

  • You have experience with distributed and fault-tolerant systems.

  • You’re familiar with Spring, Micronaut or another web MVC framework.

  • You have a passion for clean, maintainable and testable code.

  • You have a good understanding of software architecture and application design.

Any of the following would be considered a plus

  • You have experience with Docker and/or Kubernetes.

  • You feel comfortable with Unix/Linux environments.

Why you should join SumUp

  • You’ll receive 25 days’ paid leave, plus 1 additional day for each year of employment.

  • You’ll receive an individual learning budget and can take up to 10 days’ educational leave to expand your skill set.

  • We offer additional health insurance, free online fitness & yoga classes, free shuttle buses from Joliot-Curie metro station and other great benefits.

About SumUp

We believe in the everyday hero.

Small business owners are at the heart of all we do, so we create powerful, easy-to-use financial solutions to help them run their businesses. With a founder’s mentality and a 'team-first’ attitude, our diverse teams across Europe, South America and the United States work together to ensure that the small business owners we partner with can be successful doing what they love. 

SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions on the basis of race, color, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. SumUp also strives for a healthy and safe workplace and strictly prohibits harassment of any kind.

SumUp will not accept unsolicited resumes from any source other than directly from a candidate.

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