Full Stack Engineer - Billings & Subscriptions

SumUp; Berlin; Vor Ort; EUR 50.000 - 75.000; Vollzeit

Benefits dieser Stelle

€2000 annual L&D budget

Corporate pension scheme matching 20%

28 days paid leave

Urban Sports Club subsidy

Kita placement assistance

1-month sabbatical after 3 years

Referral bonus

Zusammenfassung

Sivara GmbH is looking for a skilled developer to join their Billing and Subscriptions team in Berlin. This role focuses on building and maintaining backend services and frontend interfaces that support millions of transactions globally. The ideal candidate will have solid experience with full stack applications, proficiency in Node.js or Go, and practical experience with React and Next.js.

Join us to contribute to our mission of empowering small businesses by enhancing our billing capabilities and taking part in a diverse and inclusive workplace.

Qualifikationen

• Solid experience building full stack applications with a backend focus.
• Practical frontend experience in React and Next.js.
• Strong communication skills in English, both written and spoken.

Aufgaben

• Build and maintain backend services and frontend interfaces.
• Contribute to the refactoring of key billing components.
• Support the expansion of billing and wallet capabilities into new markets.
• Handle incoming customer queries and ensure platform stability.

Kenntnisse

Full stack application development

Node.js or Go proficiency

Database management (PostgreSQL, MySQL)

Frontend experience with React and Next.js

Strong English communication skills

Tools

PostgreSQL

MySQL

DynamoDB

MongoDB

Redis

TypeScript

JavaScript

Jobbeschreibung

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, and right now, we're in an exciting phase of rebuilding and expanding that foundation. We're deepening our billing capabilities to support new sales models, market expansions, and financial integrations that directly shape how small businesses experience SumUp — and this role is central to making that happen.

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

You’ll be great for this role if

• 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.

Why you should join SumUp

• Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Berlin office. This involves an office-first setup
• Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced
• A dedicated annual L&D budget of €2000 for your individual development, which can be used to attend conferences and/or advance your career through further education
• A corporate pension scheme where we match up to 20% of your contributions
• Generous time off: enjoy 28 days of paid leave plus public holidays and special leave days
• Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches
• Break4me: 1-month sabbatical after 3 years of service
• Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team

About SumUp

Be empowered to do more that matters.

At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 37 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.

SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on 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. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited.