Senior .NET Backend Developer / Tech Lead – Stockholm

We are looking for an experiencedSenior Backend Developer / Tech Lead for a long-term consulting assignment in Stockholm.

This is a hands-on role where you will combinebackend development in C#/.NET with technical leadership. You will be part of a team working with the development and modernization of backend services in a complex, event-driven environment.

As Tech Lead, you will also guide the team's technical work, support other developers and contribute to high code quality, architecture and technical decisions.

What you will work with

• Design, develop and implement backend solutions inC# and .NET

• Work withevent-driven systems and architectures

• Develop and modernize backend services

• Act asTech Lead for the backend developers in the team

• Support developers through technical guidance and quality assurance

• Work withDocker and Kubernetes

• Test automation and integration testing

• System integrations and APIs

• Troubleshooting and performance optimization

• Contribute to cloud modernization and migration

• Use approvedAI-assisted development tools for coding, testing, debugging and documentation

• Work withGCP / cloud infrastructure and Infrastructure as Code

We are looking for someone with

• 5+ years of professional backend development experience withC# and .NET

• Previous experience as aTech Lead, Technical Lead or equivalent

• Strong experience withevent-driven systems

• Experience withKafka, Redpanda or similar technologies

• Hands-on experience withDocker and Kubernetes

• Experience withautomated testing and integration testing

• Experience withGCP or another major cloud platform

• Relevant academic degree in Computer Science, Engineering or equivalent

• Strong communication skills and the ability to independently drive technical work forward

Big plus if you have

• Experience migrating services fromon-premise to GCP

• Google Cloud Platform (GCP) experience

• Infrastructure as Code, e.g. Terraform

• Experience optimizing high-performance distributed backend systems

• Backend development experience inJava and/or Scala

• Experience using tools such asGitHub Copilot, Claude Code, Cursor or similar

• Experience designing and implementingAI agents integrated with APIs, external systems or data sources