Senior Backend Engineer
Location
Cologne, North Rhine-Westphalia, Germany
Work type
Onsite
Employment
Full Time
Experience
5-8 years
Compensation
Compensation not disclosed
Posted
17h ago
Summary and responsibilities
Role overview
Summary
As a Senior Backend Engineer, you will build and maintain core neobanking features, taking end-to-end ownership of projects from design to deployment. This role involves critical infrastructure migrations and collaboration with cross-functional teams to deliver impactful banking features.
What you'll do
Build and maintain Backend services for Core neobanking features including bank transfers, open banking, savings accounts, and payment processing.
Take end-to-end ownership of features and projects, covering scoping, design, development, testing, deployment, and maintenance, leveraging Go along with Docker and Kubernetes for container orchestration.
Take ownership of critical infrastructure migrations — including our banking core system transitions — without disrupting live customer experiences.
Collaborate closely with cross-functional teams including product, design, data science, security, and operations) to understand requirements, provide technical insights, and contribute to architecture discussions that ship meaningful banking features end-to-end.
Support fellow developers and actively help build a collaborative, innovative engineering culture.
Shape technical architecture and lead code reviews, helping define and promote best practices in code quality, testing, automation, and security to raise the overall engineering bar.
Build and integrate tools and systems that improve operational efficiency and reliability, with strong observability through monitoring, alerting, and hands‑on involvement in incident response and post‑mortems.
You'll be great for this role if you have…
Strong proficiency in Go, Kotlin or Python, with a track record of building scalable, production-grade backend services.
Experience working with cloud platforms (AWS or comparable) and container orchestration tools such as Docker and Kubernetes.
Solid understanding of SQL and NoSQL databases, distributed systems, and the trade-offs that come with high-availability requirements.
Comfort navigating complex, regulated environments — whether that's financial services, payments, or similarly high-stakes domains.
A collaborative, product-oriented mindset with the ability to work independently, communicate clearly, and adapt when priorities shift.
Any of the following would be considered a plus
Previous experience in a Growth-focused engineering team.
Familiarity with the Fintech or Banking regulatory landscape.
Updated 17h ago
Candidate fit
Skills and qualifications
Additional skills
Experience
5-8 years
How this role is positioned
Role classification
Job domains
Industries
Employment
Full Time
Contract duration
Permanent
Hiring type
Direct
Global hiring
Location specific
Offer details
Compensation and benefits
Compensation
Compensation not disclosed
Benefits and perks
Location, schedule, and role shape
Work setup
Work conditions
Bandwidth profile
Context on the employer
Company snapshot
Company
SumUp
Team size
Growing team
Location
Cologne, North Rhine-Westphalia, Germany
At SumUp, we empower small businesses globally with simple, affordable tools for payments, finance, and customer relationships. Over 4 million businesses in 37 markets rely on us. Our diverse team of over 3,000 SumUppers from 90+ nationalities is united by global collaboration and an innovative mindset, fostering an inclusive and continuous learning culture.
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Senior Backend Engineer
Cologne, North Rhine-Westphalia, Germany • Full Time