Backend Engineer - Communication Platform

About the team :

The Communications Squad is responsible for powering all self-service communications across SumUp—including SMS, email, push notifications, and WhatsApp. Today, we deliver around one billion messages every year, and we have bold plans to significantly increase both the scale and sophistication of our messaging in the years ahead. Alongside messaging, we also work on user-facing capabilities such as promotions and personalized recommendations.

As part of the Platform Tribe, we are one of several squads building and owning the systems that enable product teams across SumUp to move faster. This means we design for two audiences at once : our internal teams who depend on our platform, and the millions of merchants they serve.

To thrive in this role, we’re looking for someone excited to dive deep into a product domain while navigating the engineering challenges of a high-volume, high-impact service. We’re working on mission-critical infrastructure with substantial room for expansion, so striking the right balance between robust engineering and thoughtful feature delivery is key to success.

What you’ll do :

Build, deploy, and evolve high-impact services within our Messaging and Promotions domain, using Go to deliver fast, reliable, and scalable solutions

Boost system reliability by driving best practices in monitoring, alerting, and traceability—and by shaping the tooling that empowers our engineering teams

Influence the future of our microservices architecture, contributing to key decisions that balance scalability, flexibility, and an exceptional developer experience

Collaborate closely with product, design, and other engineering teams to craft solutions that are not only technically sound but also meaningful for our merchants

Mentor fellow engineers, sharing your expertise and helping foster a culture of curiosity, growth, and continuous improvement

Champion high standards of code quality and security, ensuring that our systems are safe, maintainable, and built for long-term success

You’ll be great for this role if you have :

4+ years of experience building and maintaining high-traffic backend systems, with a deep understanding of reliability, scalability, and performance

Hands-on experience with Go (Golang) and a passion for writing clean, maintainable, and efficient code

A strong commitment to code quality, including robust test automation, linting, and formatting best practices

Expertise in designing and building APIs, especially RESTful services that are intuitive, secure, and scalable

Practical experience with observability tools such as Grafana, Prometheus, and Honeycomb, and an understanding of how to use them to create reliable, production-ready systems

A product-oriented mindset, with the ability to think beyond code and deliver solutions that create real value for users

Experience mentoring or coaching teammates, supporting their growth and contributing to a collaborative, learning-driven engineering culture

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

🧑‍🔬 We take learning and experimentation seriously with Hack Days every second Friday, and entire .

🌈 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 €2, for attending conferences and / or advancing your career through further education

🚀 Enrolment onto our VSOP program : You will own a stake in SumUp’s future success

💶 A corporate pension scheme where we match up to 20% of your contributions

🔄 30 Days Sabbatical : Enjoy the unique opportunity to take a well-deserved break with our 30 days sabbatical benefit after completing 3 years of employment with SumUp

🔗 Referral Bonus : Earn additional rewards by referring talented individuals to join the SumUp team

🚵🏾‍♂️ Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, relocation assistance, subsidised office lunches

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.

About us :

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 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.

Our commitment to small businesses is reflected in our diverse team of over 3, SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify.

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.

Explore career opportunities with us and join a team driven by collaboration, innovation, and a shared vision of creating a world where everyone can build a thriving business. Discover more about our vibrant and inclusive work culture and how we work on our , and follow our journey on and .

Job Application Tip

We recognise that candidates feel they need to meet % of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.