Associate Engineer (Golang) - Payments Tribe

At SumUp, we're building the financial tools that empower small businesses around the world. Our Payments Tribe is at the heart of that mission — we power billions of transactions across 36+ countries each year. This is your chance to join a team that builds reliable, secure, and scalable systems that truly make a difference.

We're looking for a software engineer with a couple years of backend experience, ideally working with Golang, who’s ready to level up and tackle real-world fintech challenges and comfortable working in a production environment, collaborating across teams, and eager to grow further.

What you’ll do:

• Build and maintain event-driven backend services in a microservices architecture
• Work in a cross-functional team of engineers, product managers, and designers
• Write clean, testable, scalable code using Golang (Java is a plus!)
• Contribute to high-availability systems using Kafka, CockroachDB, PostgreSQL, AWS, and more
• Learn from and collaborate with senior engineers, participate in code reviews, and improve system architecture
• Help us balance pragmatic engineering with long-term product thinking
  
  

You’ll be great for this role if you:

• Have 2–3 years of experience in backend development, ideally with Golang
• Are comfortable working with REST APIs, SQL/NoSQL databases, and message queues (Kafka, SNS, etc.)
• Have exposure to DevOps practices like CI/CD pipelines and observability tools
• Understand software design principles and system architecture
• Are curious, collaborative, and proactive in solving problems
• Care about clean code, well-documented systems, and continuous learning

Why Join the Payments Tribe at SumUp:

• Make an impact on a global scale — our systems serve millions of merchants
• Learn from experienced engineers while working on complex, real-world problems
  Be part of a tech-agnostic team that uses the right tools for the job
• Thrive in an office-first culture that values collaboration and work-life balance
• Collaborate with SumUppers worldwide on large-scale fintech products used by millions, based in our Sofia office (office-first setup).
• Access a €2,000 annual L&D budget to attend conferences or advance your career through education.
• Enjoy 25 days of paid leave (increasing with tenure), plus paid vacations for special occasions and a 1-month sabbatical every 3 years.
• Benefit from extra perks like health and life insurance, co-sponsored Multisport cards, childbirth/adoption bonuses, discounts, a referral program, monthly food vouchers, flexible benefits, and more.

Please note: This role requires the right to work in Bulgaria. We are currently not able to support visa applications or relocation for this position at this time.

About us:

SumUp is a leading financial technology company, founded in 2012 with the goal of empowering small businesses around the globe. We’re the financial partner of choice for more than 4 million merchants in over 35 markets. We collectively build, plan and fine-tune the technology that drives SumUp and empowers small businesses around the world.

We believe in the everyday hero. Those who have the courage to follow their passion and who have the strength and determination to realise their dreams. Small business owners are at the heart of all we do, so we're creating powerful, easy-to-use financial solutions to help them run their business. 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 small business owners 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, colour, 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.