Senior System Developer - Walley

Norion Bank AB; Göteborgs kommun; Hybrid; SEK 750,000 - 1,100,000; Full time

Benefits offered by this job

Hybrid work model

Office in Gothenburg (Lilla Bommen)

Job summary

Walley, part of Norion Bank, is hiring a senior backend developer to design, build, and maintain scalable .NET/C# services. You’ll optimize Azure cloud-native systems, use Terraform for IaC, and ensure observability and performance with tools like Kibana and Grafana.

Join a hybrid team in Gothenburg where collaboration, ownership, and product mindset drive high-impact payment solutions for Nordic merchants.

Qualifications

• 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 Azure Service Bus, CosmosDB, Elasticsearch.
• Kibana, Grafana; Kubernetes, ArgoCD; Akka.
• Interest in e-commerce, fintech, or high-transaction systems.

Responsibilities

• 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.

Skills

Backend development

Team collaboration

Product mindset

Tools

Azure

Terraform

Kubernetes

ArgoCD

CosmosDB

Elasticsearch

Kibana

Grafana

Azure Service Bus

Akka

Job description

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.

• 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.

For questions about the team or the role, please contact Elsa Karlsson at [e-mail].