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. About The Role 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. Our Technology Stack 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. Backend & Messaging: 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 Cloud & Containerization: OpenShift, Docker, and Kubernetes as the foundation for deploying and orchestrating microservices CI/CD & Code Quality: GitHub Actions for automated build and deployment pipelines SonarQube for code quality and security checks Monitoring & Observability: Splunk, Prometheus, and AppDynamics for proactive monitoring, alerting, and performance insights You will play a key role in: Designing and building back-end services and APIs for payment flowsModernizing existing systems and contributing to SEB’s strategic Payment RoadmapEnsuring system reliability, performance, and resilience under high loadDriving engineering best practices and code quality improvementsContributing to architectural decisions and solution designSupporting CI/CD, DevOps, observability, and operational excellence This is an opportunity to directly shape one of the bank’s most critical domains while working with modern technologies and large-scale distributed systems. To thrive in this role, we believe you have: Professional experience with C# and .NET Core, building production-grade systemsExperience with microservices, distributed systems, and event-driven architectureHands-on experience with Kafka, messaging systems, or streaming technologiesGood knowledge of MS SQL and performance-focused database designExperience 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 skillsAbility to collaborate effectively in a cross-functional Agile teamFluency in EnglishExperience using LLMs as part of your development workflow, either professionally or through personal projects Bonus points if you also have: Experience in high-load or business-critical financial systemsFamiliarity with payment standards or banking integrationsExperience with observability, monitoring, or SRE-aligned practices What we offer: Entrepreneurial Scandinavian working cultureA modern engineering environment with the freedom to influence architecture and technology choicesInternational collaboration with teams across SEB GroupLong-term stability, opportunities for growth, and internal mobilityExtensive training, learning programs, and professional developmentWork-life balance and flexible hybrid work modelAccess to SEB staff banking with exclusive benefits Ready to join SEB? Be part of a team building the future of payments at SEB. We are looking forward to your application by August 31st, 2026. Since we select candidates continuously, feel free to send in your application before the deadline. Learn more about working at SEB here: Technology | SEB It is 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. #GSV The above indicated range is the monthly salary range for this position before tax deduction. The final offer will depend on the experience and competencies of the selected candidate. Overall remuneration package consists of the salary together with other benefits.