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# Senior .NET Developer (ZZP)

- **Company:** Utilus
- **Location:** Rotterdam, Netherlands
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** ASP.NET, .NET Framework, Application Programming Interfaces (APIs), Microsoft Azure, C Sharp (Programming Language), Standard Sql, Software Systems, Containerization, Kubernetes, Restful APIs, Microservices
- **Published:** June 12, 2026
- **Apply:** https://nl.indeed.com/viewjob?jk=11d8d084bce2586a

## About the Role

Do you have experience in Scalability?, Do you have a Master's degree?, * Bachelor's/Master degree in IT (or related) field

 * Strong C#/.NET Core development experience (5-8 years)
 * Proficiency in ASP.NET Core for building scalable APIs and microservices.
 * Experience with containerization and Kubernetes deployments.
 * Strong problem-solving abilities and attention to detail.
 * Effective communication and cross-team collaboration.
 * Ability to adapt quickly in fast-changing, ambiguous environments and domains.

Nice-to-Have:

 * Experience with Microsoft Azure services
 * Solid understanding of SQL
 * Experience in the energy industry

## Description

The Senior .NET Developer is responsible for designing, developing, and deploying high-value, high-performance backend services. The engineer will work with modern .NET technologies to build scalable APIs and services, enabling improved efficiency, compliance, and scalability across the energy ecosystem., * Refine functionalities with end users or stakeholders.

 * Design and implement the technical solution in the ecosystem of scalable services and APIs using ASP.NET Core.
 * Design and suggest architecture patterns, and defend them with logical, documented reasoning.
 * Construct software systems from scratch in an observable, stable, scalable, and maintainable manner.
 * Handle the life cycle of the deliverables. CI/CD pipelines, build, containerize, and deploy to a Kubernetes cluster (usually).
 * Troubleshoot production and development issues to ensure timely resolution and propose/implement a structural fix for the future


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