Senior .NET Backend Engineer - Flexible Work Arrangement

Vortech PCI Group is seeking a Senior Backend Engineer specializing in .NET to drive a strategic billing project for an international software client. You will focus on backend systems, modern architectures, distributed services, and engineering best practices. The role requires 6 years of C#/.NET experience, RESTful APIs, Docker/Kubernetes, SQL, messaging with RabbitMQ/Service Bus, and unit testing with xUnit or NUnit. On-site collaboration is expected two days per week at Gran Via2, Barcelona…