Senior Back-End (.NET) Developer responsible for designing and modernizing payment capabilities at SEB in Vilnius. Collaborating with architects and product owners for secure, scalable, high-performance services.
Responsibilities
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
Requirements
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
Bonus points if you also have experience in high-load or business-critical financial systems
Familiarity with payment standards or banking integrations
Experience with observability, monitoring, or SRE-aligned practices
Benefits
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
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