Backend Software Engineer (.NET/Azure)

Next Ventures; Amsterdam; Hybrid; EUR 69,000 - 90,000; Full time

Job summary

Next Ventures seeks a Backend Software Engineer (C#/.NET) to build and maintain backend APIs and event-driven services. You will integrate systems using messaging brokers, work with SQL databases, and deploy in Azure.

Responsibilities include unit/integration testing, code reviews, and CI/CD with Azure DevOps or GitHub Actions. 2 days in the office in Amsterdam, freelance/B2B contract.

Qualifications

• Proven back-end development using C#/.NET and ASP.NET Core.
• Experience with asynchronous programming and DI.
• Experience with messaging systems like Azure Service Bus or RabbitMQ.
• Strong SQL skills and EF Core or similar ORM.
• Experience writing unit/integration tests and using CI/CD pipelines.

Responsibilities

• Develop and maintain backend APIs and event-driven services.
• Integrate systems via message brokers and maintain data access layers.
• Deploy, monitor, and troubleshoot Azure-based services.
• Collaborate with CI/CD pipelines and code reviews.

Skills

C# & .NET

Messaging & event-driven

Azure

Databases (SQL)

Testing & CI/CD

Tools

Azure DevOps Pipelines

GitHub Actions

Job description

Hi,

I'm currently looking for our client in the telecommunication industry for a Backend Software Engineer (.NET / Azure)

Build and maintain backend APIs and event-driven services using C# and .NET. The role includes integrating systems through message brokers, working with databases, and deploying and supporting services in Azure.

Required skills:

• C# and .NET - Experience building backend services and REST APIs with C#, modern .NET, and ASP.NET Core. Comfortable with asynchronous programming and dependency injection.
• Messaging and event-driven systems - Experience with Azure Service Bus or a comparable broker such as RabbitMQ. Understands queues, topics and subscriptions, retries, dead-letter queues, and how to handle duplicate messages safely.
• Azure - Experience deploying or supporting applications on Azure, ideally with Azure Functions or App Service. Comfortable troubleshooting application configuration, permissions, and deployment issues.
• Databases - Strong SQL skills and experience with a relational database such as SQL Server or Azure SQL. Comfortable using Entity Framework Core or a similar data-access library.
• Testing and delivery - Experience writing unit and integration tests, working with Git and pull requests, and using CI/CD pipelines such as Azure DevOps Pipelines or GitHub Actions.

Nice to have

• Hands-on experience with Azure Functions triggered by Service Bus, Azure Table Storage, and deployment slots.
• Infrastructure as code with Bicep or Terraform.
• Experience with Azure Key Vault, managed identities, and environment-specific configuration.
• Production troubleshooting with Application Insights, Azure Monitor, or similar tools.

Contract: Freelance / B2B

Location: Amsterdam, Netherlands

Duration: 6 months + extension

Conditions of work: 2 days in the office

Rate: 50€ - 65€ per hour