Senior Backend Engineer - Golang

Atlas Metrics; Berlin; Vor Ort; EUR 55.000 - 75.000; Vollzeit

Benefits dieser Stelle

Career growth and learning opportunities

Health & wellness benefits

Subsidized Public Transport Card

Zusammenfassung

Atlas Metrics seeks a talented backend developer to join their team in Berlin. Your role involves designing and implementing services that empower merchants through seamless banking solutions. You will take ownership of your features from design to production. The ideal candidate has solid experience in Golang, a growth mindset, and a commitment to making existing systems better while fostering new developments. Join a diverse environment and contribute to shaping the future of small business banking.

Qualifikationen

• Solid backend development experience in Golang with interest in multiple languages.
• Curious and energized by complex problem-solving in fast-paced environments.
• Pride in making existing code better while evolving legacy systems.

Aufgaben

• Design and implement services for product experimentation.
• Create logic tracking user transactions for banking interactions.
• Responsibility for the lifecycle of features from design to production.

Kenntnisse

Backend development in Golang

System architecture understanding

API design (RESTful and event-driven)

Problem-solving mindset

Communication skills

Jobbeschreibung

In the Global Bank tribe, we're building the infrastructure to provide merchants with a digital business account that empowers them to manage their banking needs. Our goal is to become the most popular banking partner for small merchants globally with an effortless, simple, and affordable experience.

As part of the Bank Activation and Revenue team, you will join a high-impact growth engine within the bank. Our mission is to guide merchants in unlocking the most value out of their SumUp Business Account during their activation journey: we aim to convert 100% of SumUp’s ecosystem users into active Bank users.

We own the critical journey from the moment a merchant opens an account until they understand how the business account can solve their business needs, making it part of their daily routine. To achieve this at scale, we are building a greenfield activation and engagement platform consisting of a series of initiatives and experiments to drive adoption and engagement of SumUp users with the business account. Your work will directly drive revenue by enabling seamless cross-selling of the entire SumUp product suite to millions of merchants.

What You’ll Do

• Build Greenfield Services: Design and implement the trifecta of services (Banners, Rewards, and Feature Toggles) from the ground up to power global product experimentation.


• Drive Activation: Create the technical logic that tracks and incentivizes users through their first five meaningful transactions, ensuring a smooth path to becoming a long-term banking partner.


• Own the Stack E2E: We follow a “build it, run it, own it” model. You will be responsible for the full lifecycle of your features, from architectural design to production monitoring.


• High-Velocity Engineering: Participate in a culture of daily deliveries. We value moving fast, testing hypotheses, and iterating based on real-world data.


• Bridge Client & Backend: Build robust APIs that power the mobile and web banking experience while managing complex asynchronous processing for rewards and incentives via Kafka.


• Collaborate with Stakeholders: Work closely with other engineering teams across the Bank and the wider SumUp ecosystem to ensure our activation tools are easily integrable and highly scalable.

You’ll be great for this role if

• Strong technical foundation: Solid backend development experience in Golang, with interest in working across multiple languages (Kotlin, Elixir). You understand system architecture, object-oriented and functional design principles, data modeling, and API design (RESTful and event-driven).


• Growth Mindset: You’re curious and energized by complex problem-solving. You thrive in environments with fast iterations and careful design, where understanding the problem deeply is valued over rushing to delivery. You’re excited by the opportunity to architect critical systems from scratch - like our new global banner service - and work in a team that follows a “build it, run it” model with daily deliveries.


• Systems Pragmatist: You understand that supporting and evolving legacy systems is the foundation for future success. You take pride in making existing code better while ensuring new services are architected for the long haul.


• Ownership and craft: You take full ownership of the software you ship, from design to production readiness. You value clean, maintainable code and continuously refactor to keep designs simple and scalable.


• Communication: You can communicate complex technical trade-offs effectively to your fellow engineers and technical stakeholders.

What You'll Achieve in 6 Months

By your sixth month, you will have taken full ownership of one of our Rewards features and contribute to the Banners service. Banners service will be the primary engine for product discovery and cross-selling within the Bank app, enabling our team to run rapid-fire experiments that directly impact SumUp's bottom line.

Any of the following would be considered a plus

• Previous experience in a Growth-focused engineering team.


• Experience building rules engines or Reward/Incentive systems.


• Familiarity with the Fintech or Banking regulatory landscape.

Why you’ll enjoy working at SumUp

• Be part of a company that values diversity and celebrates unique perspectives.


• Work with a global team of skilled professionals in an environment that fosters collaboration, learning, and growth.


• Be part of a global tribe building a banking solution from the ground up and delivering impactful solutions to the real-life problems of millions of SumUp merchants all over the world


• Career growth and learning opportunities: We invest in your development through regular training, mentorship programs, SumUp University leadership cohort and a yearly learning budget (2,000 EUR)


• Sabbatical program for tenured SumUppers


• Join a global team where you belong: Check out our D&I Initiatives and Employee Resource Groups such as Pride Club, SumAfro, Neurodiversity, Grupos Mais, Women in Tech, and more


• Health & wellness benefits: in-house fitness classes, gym in the office, subsidized Urban Sports Club and available psychotherapy sessions


• A lot of other benefits such as Subsidized Public Transport Card, Kita placement assistance, Pension Scheme, Language Learning platform/courses etc.


• Enrollment onto our virtual stock ownership program - you will own a stake in SumUp’s future success

About SumUp

At SumUp, we’re on a mission to empower small businesses around the world with simple, affordable tools to help them start, run, and grow. More than 4 million merchants across 37 markets trust us as their financial partner — and we’re just getting started.

We’re a global team of 3,000+ people from over 90 nationalities, united by curiosity, collaboration, and care. Our core values and culture shape everything we do, fostering inclusion, learning, and belonging.

SumUp is proud to be an Equal Employment Opportunity employer, committed to building a safe, respectful, and diverse workplace where everyone can thrive.

Job Application Tip

We recognise that candidates feel they need to meet 100% 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.