Senior .NET Back-End Solution Developer | SEB, Vilnius

Are you excited about building modern, resilient systems that sit at the heart of banking? Do you want to join one of SEB’s most business-critical product roadmap and influence how payments evolve for millions of customers?

 

At SEB, we are shaping the next generation of payment capabilities. Our Payment Roadmap area drives one of the bank’s most important transformation journeys — renewing core services, enabling real-time processing, and building future-proof architectures. If you want your work to matter, this is the place.

 

With technology as our foundation, we provide world-class services across SEB Group in 20 locations worldwide. With us, you join a community of 2800+ professionals who challenge old ways of working, adopt modern engineering practices, and innovate for a sustainable digital tomorrow.

 

As a Senior Back-End (.NET) Solution Developer, you will be part of a cross-functional team responsible for designing, developing, and modernizing mission-critical payment capabilities. You will work closely with architects, product owners, and engineering teams in Vilnius and Stockholm to deliver secure, scalable, and high-performance services aligned with SEB’s long-term payment strategy.

 

As a Back-End (.NET) Developer on our team, you’ll work with a modern, cloud-native ecosystem built for scale, reliability, and continuous delivery.

 

NET Core for building high-performance services

Kafka and IBM MQ for event-driven and message-based integrations

MS SQL for robust and scalable data storage

 

OpenShift, Docker, and Kubernetes as the foundation for deploying and orchestrating microservices

 

GitHub Actions for automated build and deployment pipelines

SonarQube for code quality and security checks

 

Splunk, Prometheus, and AppDynamics for proactive monitoring, alerting, and performance insights

 

• Designing and building back-end services and APIs for payment flows
• Modernizing existing systems and contributing to SEB’s strategic Payment Roadmap
• Ensuring system reliability, performance, and resilience under high load
• Driving engineering best practices and code quality improvements
• Contributing to architectural decisions and solution design
• Supporting CI/CD, DevOps, observability, and operational excellence

• Professional experience with C# and .NET Core, building production-grade systems
• Experience with microservices, distributed systems, and event-driven architecture
• Hands-on experience with Kafka, messaging systems, or streaming technologies

• Good knowledge of MS SQL and performance-focused database design
• Experience working with containerized solutions (Docker, OpenShift, Kubernetes)
• Experience building and maintaining CI/CD pipelines (GitHub Actions or similar)
• A proactive mindset with strong ownership and problem-solving skills
• Ability to collaborate effectively in a cross-functional Agile team
• Fluency in English

• Experience in high-load or business-critical financial systems
• Familiarity with payment standards or banking integrations
• Experience with observability, monitoring, or SRE-aligned practices

• Entrepreneurial Scandinavian working culture
• A modern engineering environment with the freedom to influence architecture and technology choices
• International collaboration with teams across SEB Group
• Long-term stability, opportunities for growth, and internal mobility
• Extensive training, learning programs, and professional development
• Work–life balance and flexible hybrid work model
• Access to SEB staff banking with exclusive benefits