Full Stack Engineer - Billings & Subscriptions

About the role

Our Billing and Subscriptions team sits at the heart of how SumUp's merchants pay for, manage, and grow with our products. We own the billing engine, merchant wallet, and subscription experiences that underpin millions of transactions across 37 markets.

What you'll do

• Build and maintain backend services and frontend interfaces across our billing, contracts, and merchant wallet products
• Contribute to the refactoring of key billing components to improve reliability, data security, and alignment with our wider payments platform
• Support the expansion of our billing and wallet capabilities into new markets, helping ensure localisation requirements are met
• Take part in our weekly support rotation, handling incoming customer queries and helping maintain platform stability
• Work closely with senior engineers and product managers to deliver features end-to-end, from implementation through to production

What you'll need

• Solid experience building full stack applications, with a backend focus. Ideally comfortable with Node.js or Go, though we're open to other backend languages.
• Comfortable working with both relational databases such as PostgreSQL or MySQL and non-relational databases (such as DynamoDB, MongoDB, or Redis)
• Practical frontend experience working with React and Next.js, with the ability to write clean, typed code in TypeScript or JavaScript
• Strong communication skills in English, both written and spoken, with the ability to give and receive clear, constructive feedback
• A pragmatic approach to problem-solving, able to make sensible trade-offs, unblock yourself and others, and write clean, maintainable code

What they offer

• Annual L&D budget of €2000 for conferences and further education
• Corporate pension scheme with up to 20% matching contribution
• 28 days of paid leave plus public holidays and special leave days
• Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches
• 1-month sabbatical after 3 years of service
• Referral bonus programme