Senior .NET Backend Engineer – Remote & Certificate Lifecycle

Jelber; Bjerringbro; Hybrid; DKK 750,000 - 950,000; Full time

Job summary

Jelber in Denmark is seeking a Senior .NET Backend Developer to build and support a secure certificate provisioning solution for device onboarding and lifecycle management.

You will develop with .NET 8/10, ASP.NET Core, Windows Services, and Azure services, focusing on security, reliability, and integration. After an initial on-site introduction, remote work is possible.

Location: Bjerringbro, Denmark. Start: 01-10-2026. End: 20-03-2027.

Qualifications

• Strong experience with C#, .NET 8/10, ASP.NET Core, and Windows Services.
• Experience with Azure Blob Storage, Key Vault, Application Insights, and Azure DevOps.
• Knowledge of X.509/other certificates, and certificate lifecycle management.
• Strong understanding of async programming, dependency injection, file handling, and troubleshooting.
• Experience with Git, PowerShell, CI/CD pipelines, and Windows Server environments.

Responsibilities

• Develop and maintain .NET 8/10 backend services, Windows Services, and ASP.NET Core APIs.
• Support X.509/other certificate generation, validation, storage, and lifecycle management.
• Maintain integrations with Azure Blob Storage, Key Vault, and Application Insights.
• Troubleshoot production issues across application, infrastructure, and certificate-related workflows.
• Maintain CI/CD pipelines, deployment automation, and release processes using Azure DevOps.
• Contribute to testing, code reviews, and engineering best practices.
• Participation in clarification of requirements and coordination with stakeholders.
• Participation in production rollout.

Skills

C#

.NET 8/10

ASP.NET Core

Windows Services

Azure Blob Storage

Azure Key Vault

Application Insights

Azure DevOps

X.509 certificates

Certificate lifecycle

async programming

dependency injection

Git

PowerShell

Windows Server

Tools

Azure DevOps

Git

PowerShell

Job description

Jelber in Denmark is seeking a Senior .NET Backend Developer to build and support a secure certificate provisioning solution for device onboarding and lifecycle management.

You will develop with .NET 8/10, ASP.NET Core, Windows Services, and Azure services, focusing on security, reliability, and integration. After an initial on-site introduction, remote work is possible.

Location: Bjerringbro, Denmark. Start: 01-10-2026. End: 20-03-2027.