Senior Backend Developer

Are you a Senior C# developer passionate about designing scalable solutions that have an immediate impact on the customer experience? We are looking to strengthen the team that builds Investment Overview, a backend solution that sits at the center of the customer experience and places high demands on correctness, performance, and resilience. SEB is more than a bank. We are a technology-driven financial institution where everything starts from our customer needs and business outcomes. AI, data and modern engineering are natural parts of how we work, build and deliver value. From core banking platforms to agentic AI , automation, cybersecurity and cloud, we offer a broad tech landscape and many paths to grow. Together, we are shaping secure, responsible and future- proof solutions for our customers and society. Are you ready to take on a new challenge? About the role: As a senior backend developer, you will join the team responsible for building the foundation of our future customer experience: the Investment Overview. This provides information for the first thing customers see when they log into our app or web platform, making it one of the most critical drivers of customer satisfaction. In this role, you will be part of designing and implementing the core data layer - including data sourcing, aggregation, compilation, and the API interfaces - that powers this experience end to end. You will work in a small team, collaborating close to Product Owner, stakeholders and coworkers to ensure smooth development, maintenance and deployment in production. The solution will grow over the coming years, so you will be part of clarifying requirements as well as designing the solutions going forward. This is an excellent opportunity to make a tangible impact and grow your expertise. To thrive in this role, we believe you have: Extensive experience as a Senior C# developer, and the .NET ecosystem. The ability and desire to write clean, testable and maintainable code, using agile methodologies as needed. A good understanding of complex system architecture & design (scalability, security and maintainability). Experience of building high‑availability, high‑performance backend systems in an environment using modern CI/CD pipelines connected to cloud platforms. Insights related to providing APIs (REST/GraphQL/gRPC) and asynchronous messaging for event driven architectures. Experience developing and deploying with Docker and Kubernetes, preferably on GCP. Curiosity towards agentic workflows in various parts of software development. An interest in the financial markets, and an understanding of how a customer’s total investments are built up by individual positions of financial instruments. Experience using LLMs as part of your development workflow, either professionally or through personal projects. What we offer: Agile and modern ways of working A flat hierarchy and openness to share ideas, opinions and points of views Extensive training and learning opportunities Hybrid work model, meaning remote work is possible up to 2 days/week Innovative company at the forefront of technology Do you want to be part of 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. Since we select candidates continuously, feel free to send in your application today via the link in this ad, but no later than 2026-09-17. If you have questions about the position, please contact Jonas Lindqvist, jonas.lindqvist@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. The employment is covered by collective agreements signed between Finansarbetsgivarna and Akademikerföreningen and between Finansarbetsgivarna and Finansförbundet. Learn more about working at SEB on our Career website or through our Career podcasts. sebgroup.com/career bit.ly/SEBcareer