Mid-level Back-end Developer C#/.NET

Within the organisation, the IT department is responsible for the management and support of all IT and technology-related matters.

As a back-end developer, you will strengthen the development unit within the business applications team (development and application management) and contribute to a large project that is currently under way.

Because you will be working in a police environment, you will undergo a security screening after the selection process. You will receive all the relevant information in due course.

As a back-end developer (C#/.NET), you are responsible for developing, extending and maintaining high-performing, secure and scalable back-end functionality within our C#/ASP.NET Core architecture.

You work within a modular architecture in which generic functionality is housed in shared libraries that are reused across different applications. You also develop application-specific and domain-specific functionality.

You translate functional requirements into clear data models, services and APIs, and ensure that data is made available to the front end in a consistent and usable way. In doing so, you work closely with front-end developers on API contracts and data models.

What you do

• You develop and maintain back-end functionality in C# and ASP.NET Core.
• You design, build and maintain REST APIs.
• You set up and maintain data models and data processing using Entity Framework Core and MSSQL.
• You integrate and consume internal and external APIs.
• You convert external data into usable data models for the application.
• You build robust back-end functionality that correctly handles erroneous, incomplete or unexpected input, applying secure software development principles, including input validation, error handling and relevant OWASP guidelines.
• You write and maintain unit and integration tests, and you test, debug and resolve technical issues.
• You monitor and optimise performance, stability, security and code quality.
• You document code, APIs and key technical decisions.

In addition

• You contribute to the further development and improvement of the modular back-end architecture.
• You contribute to the further standardisation and reusability of shared components.
• You carry out and take part in code reviews.
• You help shape architectural and technical decisions.
• You integrate Elasticsearch for search functionality.
• You use Elastic APM for tracing and monitoring.
• You implement and maintain background processes and scheduled tasks, for example using Hangfire.
• You work within the existing GitLab CI/CD environment and contribute to deployment to Kubernetes.