Senior .NET C# Developer (Antwerpen (Hybride)) 02-09-2026

ENTICO ICT; Antwerpen; On-site; EUR 70,000 - 100,000; Full time

Job summary

ENTICO ICT is seeking an experienced backend engineer to design and implement scalable services and APIs using .NET Core. Blazor is optional. The role emphasizes Azure-based architecture, including App Insights, Event Grid, and MassTransit, with a focus on secure, well-governed solutions.

You will work with REST APIs, OData, and API versioning, applying patterns like DDD, CQRS, MediatR, and vertical slice architecture to build robust systems. Strong collaboration and quality code are required.

Qualifications

• Experience designing and developing backend services and APIs.
• Experience with .NET Core.
• Experience with Blazor (optional).
• Strong hands-on experience with Azure, particularly Application Insights.
• Event-Grid
• Event-driven architectures.
• MassTransit.
• The developer should also understand Azure governance, authentication, and RBAC concepts.
• APIs & Integration: REST APIs, OData, API versioning and security.
• Software Architecture: DDD, CQRS, MediatR, Vertical Slice Architecture, Repository Pattern, Event-driven architecture.

Skills

Backend design

REST APIs

Azure architecture

DDD

CQRS

MediatR

Event-driven

Security concepts

SQL

EF Core

Dapper

Cosmos DB

Tools

EF Core

Dapper

Cosmos DB

Azure SQL

SQL Server

Azure DevOps

Event Grid

MassTransit

Job description

Experience designing and developing backend services and APIs

Experience with .NET Core

Experience with Blazor (optional)

Strong hands-on experience with Azure, particularly:

Application Insights

Event-Grid

Event-driven architectures

MassTransit

The developer should also understand general Azure architecture, governance, and security concepts, including:

Service Principals (SPNs)

Managed Identities

Role-Based Access Control (RBAC)

Azure resource organization and governance

Authentication and authorization between Azure services

APIs & Integration:

Strong experience designing and consuming REST APIs

Experience with OData

API versioning and backward compatibility

API security and authentication

Experience integrating distributed systems and services

Software Architecture & Design

Good practical knowledge of:

Domain-Driven Design (DDD)

CQRS

MediatR

Vertical Slice Architecture

Repository Pattern

Event-driven architecture

More importantly, the developer should understand when and why to use these patterns, rather than applying them by default.

DevOps & Delivery

Strong understanding of Azure DevOps

Automated build, test, and deployment processes

Environment and configuration management

Git-based development workflows

Pull requests, code reviews, and branch management

Clean, maintainable, and testable code

Unit and integration testing

Logging, monitoring, and observability

Error handling and resiliency

Performance awareness

Code reviews and engineering standards

Data Access & Persistence

Strong experience with Entity Framework Core (EF Core)

Experience with Dapper for lightweight and performance-sensitive data access

Strong knowledge of SQL

Experience with Azure SQL / SQL Server

Database schema design and normalization

Query optimization and performance tuning

Indexing and execution plans

Database migrations

Transactions and concurrency handling

Understanding when to use EF Core vs. Dapper

Experience working with both relational and NoSQL databases, including Cosmos DB