Senior System Developer - Walley

Empowering merchants, enabling seamless shopping. At Walley, we are building payment solutions that make shopping experiences smooth and secure for millions of customers every year. Our teams are at the heart of that mission, and we are now looking for more amazing developers who want to help us take it to the next level. About the Role As part of our backend teams, you will work with one of Walley's most business-critical products that handles thousands of transactions every day. We follow a DevOps mindset, taking full ownership from idea to production, and continuously improving performance, reliability, and scalability. You will work in a cross-functional, autonomous team that values quality, collaboration, and learning. Every line of code you write can have a real impact, both on our customers and our business. What You Will Do

Design, build, and maintain scalable backend services in .NET and C#

Develop and optimize cloud-native systems in Azure

Work with infrastructure as code using Terraform

Ensure observability, maintainability, and performance across our systems

Collaborate closely with other developers, product managers, and designers to create high-quality, data-driven solutions

Contribute to continuous improvement and modern DevOps practices

What We Are Looking For We believe you are an experienced developer who thrives in a collaborative environment and enjoys taking responsibility for the entire product lifecycle. You are pragmatic, curious, and humble, and you have a strong product mindset and passion for delivering great quality, resilient systems, and security. You likely have:

5+ years of backend experience, primarily in .NET and C#

Proven experience with Azure and Terraform

A DevOps mindset and experience with continuous deployment and cloud-native architectures

Hands-on experience with several of the following:

Azure Service Bus, CosmosDB, Elasticsearch

Kibana, Grafana

Kubernetes, ArgoCD

Akka

An interest in e-commerce, fintech, or high-transaction systems

How We Work We work in a hybrid setup, with our main office located at Lilla Bommen in Gothenburg. Three days a week we collaborate on-site to share ideas, build knowledge, and move faster together. Walley is a tech-driven, autonomous part of Norion Bank (formerly Collector Bank). Since 2005, we have been helping merchants across the Nordics grow through smarter, more flexible payment solutions. Why Join Us

Work with modern technology in a high-impact product area

Be part of a humble and skilled team that values collaboration and learning

Have autonomy and influence over tools, methods, and processes

Help shape the quality culture of one of the Nordics’ leading payment solutions

Ready to build and ensure the quality of the next generation of payment experiences?

Join us at Walley, where great technology meets real-world impact. ABOUT WALLEY Walley is one of the largest payment providers in the Nordics with more than 6 million active end customers over the past year. We're a tech-driven, autonomous part of the Norion Bank group and have been working with payment solutions and digital purchase journeys since 2005. Walley's product organization is divided into seven autonomous product teams. The product you'll help build is used by millions of customers! NORION BANK’S OFFER TO YOU At Norion Bank, we believe that every individual's growth and development should be highly valued. This means a strong focus on self-leadership and continuous competence development. A sense of community, innovation, and modern ways of working are key characteristics of Norion Bank Group. In short, we offer an organization with short decision-making paths, great openness, and plenty of energy. As part of our team, you will contribute to and be shaped by our strong company culture. We offer you an exciting workplace with excellent opportunities for growth, continuous learning, and shared activities both inside and outside the workplace. BIAS-FREE RECRUITMENT We want our recruitment process to be fair and inclusive. Therefore, we kindly ask you not to attach a photo or include any information that is not relevant to the position. A personal letter is not required. INTERESTED? Great! We review applications and conduct interviews on an ongoing basis, so don't wait - apply today! Have any questions? You're very welcome to get in touch with us! For questions about the team or the role, please contact Elsa Karlsson at elsa.karlsson@walley.se. #Walley