Senior Backend Developer (.NET / Azure)
HybridAmsterdam, North Holland, The Netherlands
Job Summary
Own backend services end-to-end, from architectural design and scoping through coding, deployment, and operational health. Coach junior and mid-level developers, conduct code reviews, and establish best practices around testability and clean architecture. Design scalable microservices and resilient event-driven integrations using Azure Service Bus and MassTransit. Write clean, modular C# code targeting modern .NET Core runtimes while leveraging AI coding tools to accelerate workflows. Champion automated unit testing, continuous integration, and proactive performance profiling. Bring 5+ years of hands-on backend experience with C# and .NET Core, a proven track record of mentoring engineers, and mastery of microservices patterns and Azure infrastructure.
Required Qualifications
- 5+ years of hands-on backend software engineering experience with C# and .NET Core
- Mentorship Experience: A proven track record of guiding junior/mid-level engineers, sharing knowledge, and fostering best practices (TDD, clean code, peer reviews)
- End-to-End Feature Ownership: Demonstrated experience designing and delivering backend features from initial idea to production deployment
- Event-Driven Mastery: Solid understanding of microservices patterns and event-driven messaging (Azure Service Bus, MassTransit, RabbitMQ, Kafka, etc.)
- Azure Cloud Experience: Practical experience working with core Microsoft Azure infrastructure and cloud components
- Testing Mindset: Deep appreciation for testable architecture and unit testing best practices
Desired Qualifications
- Experience with Kubernetes and container orchestration
- Knowledge of SQL Server relational database design and optimization
- Familiarity with modern CI/CD pipelines and DevOps workflows (Azure DevOps / GitHub Actions)
- Hands-on experience with MassTransit specifically
- Experience with legacy system migration (.NET Framework to modern .NET)
- Familiarity with developer AI tooling (e.g., Cursor, Claude code)
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