Senior .NET Backend Engineer (Payments & Reporting) | SEB, Solna

Own systems that move millions of payments every day

Join SEB’s Payments & Reporting team and take ownership of services powering millions of payments across the Nordics.

You will build new systems and continuously improve existing ones, ensuring they remain reliable, scalable, and ready for higher volumes and new regulatory demands. Ensuring they remain reliable, scalable, and ready for increasing volumes and new regulatory demands.

This means solving real engineering challenges in distributed, data-intensive systems, where performance, resilience, and correctness are critical.

What you’ll do

• Design and evolve event-driven microservices for payment processing and reporting
• Build and operate high-throughput, low-latency backend systems
• Take full ownership of services end-to-end
• Optimize data-heavy workflows, including schema design, performance tuning, and query optimization
• Drive production excellence with monitoring, resilience, troubleshooting, and continuous improvement
• Collaborate across teams to shape architecture and platform capabilities
• Contribute to engineering practices, including CI/CD, testing, and AI-assisted development

Tech you’ll work with

• Backend: .NET 10 (C#)
• Messaging & events: Kafka, IBM MQ
• Data: MS SQL Server, Redis
• Platform: Docker, Kubernetes, OpenShift
• Ways of working: CI/CD, automated testing, observability-first

What we’re looking for

• Strong experience building and operating backend systems in .NET / C#
• Solid understanding of distributed systems and microservice architectures
• Experience working with data-intensive applications and SQL performance optimization
• Hands-on experience with event-driven systems (Kafka, MQ, or similar)
• Experience running services in containerized environments (Docker/Kubernetes)
• Ability to own solutions end-to-end and operate them in production
• A collaborative mindset with strong communication skills
• Proficient in reading and interpreting technical documentation, system diagrams, and extracting data from various internal sources

To thrive in this role, we believe you have:

• Proven experience with .NET/C#, and microservices development
• Strong MS SQL Server background and DBA-level skills, experienced in building, optimizing, and operating data-intensive systems
• Strong DBA-level skills (performance, indexing, troubleshooting)
• Experience with Kafka or another message broker
• Good working knowledge of Docker, Kubernetes (K8s), and OpenShift
• Experience working with infrastructure and deployment automation
• A collaborative mindset and eagerness to share, learn, and grow
• Great communication skills and fluency in English, Swedish is a plus

How we work

• You build it, you run it — full ownership of your services
• Strong focus on production quality, resilience, and observability
• Collaborative, cross-functional teams across Stockholm and Vilnius
• Continuous improvement through automation, AI tools, and modern engineering practices

What we offer:

• At SEB, you’ll join a modern, forward‑looking tech environment where engineering excellence, continuous learning, and collaboration are core values. As a Senior .NET Backend Engineer (Payments & Reporting) .NET Developer in Payments & Reporting, you can expect:
• Impact at scale – Play a key role in building SEB’s next‑generation payment platform used by millions of customers across the Nordics.
• Modern technology landscape – Work hands-on with .NET 10, Kafka, IBM MQ, Redis, MS SQL, Docker, Kubernetes, and OpenShift in a young, fast‑evolving codebase.
• Clear product vision & roadmap – Be part of a long-term strategic initiative with strong business backing and a shared roadmap across multiple teams.
• Hybrid work model – Flexibility to combine office collaboration and remote work (3 days/week in the office).
• Great benefits – Competitive compensation, pension, insurance, wellness allowance, and employee banking benefits.
• International collaboration – Work closely with colleagues in both Stockholm and Vilnius in a diverse, cross‑functional setup.

Ready to Join?  

Itis our fundamental belief that inclusion and diversity is crucial for our future success. We strive to have an inclusive, value-driven culture where employees feel valued, respected, and involved irrespective of who they are, what they believe or where they come from. 

Since we select candidates continuously, feel free to send in your application today via the link in this ad, but no later than 2026-06-01. If you have questions about the position, please contact Kristina Meller at kristina.meller@seb.se, note that we will not process applications via email. 

Please be aware that our final candidates undergo background checks, a process that includes for example identity control, verification of qualifications, credit checks, company engagements and history of crime. In some cases, we also apply random drug checks. During employment, employees within SEB can also expect to undergo recurring background checks. 

SEB Sweden has a redeployment responsibility, which means that this position might be covered by internal redeployment.