REQUIRED TECHNICAL SKILLS

• Proficiency in C# and .NET 8 for building distributed backend systems
• You routinely integrate AI coding assistants (e.g., GitHub Copilot, Cursor, or equivalents) into your workflow to automate boilerplate, refactors, and tests—shipping faster and writing cleaner code
• Strong experience with PostgreSQL or other relational databases
• Solid understanding of CQRS, publisher-subscriber, factory, and other key design patterns
• Familiarity with dependency injection and modular service architecture
• Secure API design using JWT, OpenID Connect, and authentication middleware
• Hands-on experience with Swagger/OpenAPI, Polly for resiliency, and Git for version control
• Proficient in deploying and operating containerized services with Kubernetes
• Experience using Azure Service Bus or other enterprise messaging solutions
• Working knowledge of cloud platforms, especially Azure
• Familiarity with Datadog, Serilog, OpenTracing, and related observability tools

ABOUT US

20 years ago at Pro4all, we embarked on a challenging mission: to digitise construction. Why? Because we saw that, despite all good intentions, costly mistakes were being made and materials unnecessarily wasted. Thanks to our software, construction companies can now work together more efficiently, build more sustainably and possibly even contribute to solving the housing shortage. Our products are used daily by tens of thousands of professionals working in the construction industry.
But note that we are not just another software company. We are a team of passionate tech enthusiasts with years of experience. We believe digitalisation is the key to our customers’ success. We want to move the (often conservative) construction industry and show that building can be easier (and more fun). Our solutions have contributed to the largest (and smallest) projects in the Netherlands and abroad such as: Amare, Coolblue and Schiphol Airport

• Design, prototype, and develop backend and middleware components using .NET 8 and C#
• Build and maintain secure REST APIs and automation layers to support internal and external integrations
• Create and maintain unit and integration tests to ensure code quality and resilience
• Implement testable, scalable, and robust software using established architectural patterns
• Ensure service reliability with structured logging, distributed tracing, and health checks
• Support and guide partners and customers on backend integration challenges
• Collaborate in agile teams with architects, developers, and product stakeholders