Senior .NET Backend Engineer

Next Learning Valley is the leading implementation partner for innovative learning technologies in the Netherlands and Belgium. As the exclusive partner of Learning Pool, we work with Stream LXP, Learning Locker (LRS), and Learning Pool Automation to help organizations create modern, data-driven learning ecosystems. In addition, we develop our own solutions that enable organizations to deliver more personalized, intelligent, and data-driven learning experiences. Our platforms and technologies provide the foundation for future-ready learning and development. If you see yourself in this role, we’d love to hear from you. The listing We are looking for a hands-on Senior .NET Backend Engineer to help design, build and operate robust backend services and modular applications within our broader platform environment. This role is focused on developing production-ready APIs, background services and backend components with a strong emphasis on clean architecture, maintainability, reliability and technical ownership. Key Responsibilities Backend Engineering & Application DevelopmentDesign, build and maintain APIs using .NET and ASP.NET CoreDevelop clean and maintainable C# codeApply async/await, dependency injection and minimal APIsDesign REST and OpenAPI contractsSupport modular monolith and microservice architecturesTroubleshoot production issuesEnsure secure and production-ready solutions Database, Integration & Event-Driven Architecture Design PostgreSQL schemas and migrationsOptimize SQL performanceDesign REST and event-driven integrationsWork with Kafka or Azure Service BusSupport CDC and streaming integrations Cloud, Containers & Platform Operations Containerize services with DockerDeploy through CI/CD pipelinesWork with Azure platform servicesSupport Kubernetes / AKSUse observability tooling such as Prometheus and GrafanaApply Infrastructure as Code Security, Collaboration & Technical Ownership Work with OAuth2, JWT and KeycloakCollaborate with backend, frontend and platform teamsReview pull requestsTake ownership of technical solutionsSupport GDPR and compliance requirements Hier gaan we vanuit Required Experience .NET 8+ / ASP.NET CoreAdvanced C#PostgreSQLREST & OpenAPIDockerGit & CI/CDMicroservices / Modular MonolithProduction-grade backend developmentStrong analytical skills Strongly Desired Kubernetes / AKSAzure ServicesKafka / Azure Service BusKeycloakAzure DevOps / GitHub ActionsPrometheus & GrafanaPulumi / Terraform / Bicep Nice to Have PythonChange Data Capture (CDC)Data PlatformsGDPR / Regulated environmentsReact or TypeScript Arbeidsvoorwaarden Work on AI-driven learning tools and large-scale projects such as AMALT.A modern tech stack with the opportunity to contribute to product development and architecture decisions.Hybrid working and a great office environment in Utrecht.A competitive salary and excellent secondary benefits, including a pension plan and company laptop.Plenty of opportunities to grow into roles such as Senior Developer, Software Architect, DevOps Engineer, or Technical Lead.A culture where knowledge sharing and continuous improvement are part of everyday work. About Next Learning Valley: Next Learning Valley is een onderwijskundige implementatiepartner en aanbieder van innovatieve leertechnologieën zoals StreamLXP (Learning Experience Platform) , Learning Locker (Learning Record Store) en Waves (automation). Het werk van Next Learning Valley wordt erkend door een exclusief partnerschap met Learning Pool, langdurige samenwerkingen met 60 klanten zoals o.a. Het Rode Kruis, ABN AMRO, VodafoneZiggo en Ministerie van Defensie en het winnen van internationale awards. De pionier in Learning & Development onderscheidt zich met haar concepten gepersonaliseerd leren, sociaal leren, werkplekleren en datagedreven leren en het eigen ontwikkelde leer-ecosysteem; de Learning Suite. Founded in 2013Currently working in 1 office.