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# Backend Developer

- **Company:** Pro4all
- **Location:** Woerden, Netherlands
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Application Programming Interfaces (APIs), Architectural Patterns, Microsoft Azure, Cloud Computing, Command-Query Responsibility Segregation (Software Development), Relational Databases, Cursor, Dependency Injection, Software Design Patterns, Middleware, PostgreSQL, Openid Connect, Swagger, Openapi, Azure Service Bus, Datadog, Data Logging, GitHub Copilot, AI Coding Agents, Backend, Git, Integration Tests, Kubernetes, Restful APIs, Code Restructuring, Dynatrace
- **Published:** October 15, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=23233fd82e0fc203

## About the Role

You're comfortable building distributed backend systems with C# and .NET. You regularly use AI coding assistants such as GitHub Copilot or Cursor to handle boilerplate, refactoring, and tests, helping you ship faster and write cleaner code.

Your technical experience includes:

 * Data and architecture: strong experience with PostgreSQL or other relational databases, a solid understanding of CQRS, publisher/subscriber, factory, and other design patterns, plus familiarity with dependency injection and modular service architecture.
 * APIs and security: secure API design with JWT, OpenID Connect, and authentication middleware, alongside practical experience with Swagger/OpenAPI, Polly, and Git.
 * Cloud and messaging: deploying and operating containerized services with Kubernetes, working with Azure Service Bus or similar messaging solutions, and working knowledge of cloud platforms, especially Azure.
 * Observability: familiarity with Datadog, Serilog, OpenTracing, and related tools.

## Description

You'll build the backend and middleware that connect our software, customers, and partners. From the first prototype to a working integration, you'll work with architects, developers, and product stakeholders in an agile team.

 * Design and develop backend and middleware components in C# and .NET, including secure REST APIs and automation for internal and external integrations.
 * Build testable, scalable, and robust software, supported by established architectural patterns and unit and integration tests.
 * Keep services reliable and problems traceable with structured logging, distributed tracing, and health checks.
 * Help partners and customers work through backend integration challenges.