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In4Matic

.Net Developer

On site

Brussels, Belgium

Mid level

Full Time

13-03-2026

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Skills

SQL Version Control Databases angular Asp.Net react .NET .NET Core

Job Specifications

We’re looking for a Senior Full-Stack .NET Developer Consultant to join our client’s digital development team. In this role, you will help translate business needs into reliable, secure, and user-friendly applications. You will contribute to the evolution of a large-scale digital platform used by external users to interact with our client’s services, working within a modern Microsoft technology stack and collaborating closely with analysts, developers, and other technical stakeholders.

Role & Responsibilities

As a Full-Stack .NET Developer, you will be involved in the full development lifecycle, from analysis to implementation and delivery.

Translate functional requirements into technical solutions and application features
Perform functional and technical analysis for new developments and improvements
Develop and maintain full-stack applications using modern .NET technologies
Contribute to the evolution of a large internally developed digital platform and its related services
Build and maintain APIs and modern front-end interfaces
Ensure high standards in performance, maintainability, and application security
Collaborate with cross-functional teams to deliver high-quality software solutions

Technical Environment

You will work within a modern Microsoft development environment including:

.NET 6+ and ASP.NET MVC5
Front-end frameworks such as React (or similar frameworks like Angular or Vue)
SPA front-end architectures combined with .NET Core API back-ends
Architectural patterns such as CQRS (via MediatR) and Domain Driven Design (DDD)
YARP and modern API gateway concepts
Relational databases and data modelling (SQL, ERD)
Version control and collaborative development practices

Profile - The Ideal Candidate

Senior Full-Stack .NET developer with at least 6 years of professional experience
Minimum 5 years of experience working in a Microsoft .NET environment
At least 2 years of experience developing SPA front-ends and API back-ends with .NET Core
Bachelor’s or Master’s degree in Computer Science or a related field
Good knowledge of modern database technologies and relational data modelling
Familiarity with application security principles and secure development practices
Strong team player who enjoys collaborating to successfully deliver projects
Creative, proactive, and able to take ownership of delivering high-quality solutions
Fluent in Dutch with a good passive understanding of English

About the Company

In4Matic is an IT-consulting company with two decades of experience that delivers IT services to several business sectors. By offering specialized IT consultants, In4Matic helps its clients reach their goals. In order to deliver the best quality, we choose to listen very carefully to our clients and co-workers. A good relationship with the client is an inviting added value to the completion of the client’s projects. Every client deserves a personal approach to fulfil their needs. In4Matic aims to deliver top quality work w... Know more