.NET / Angular Developer (freelance)

Kingfisher Recruitment; Brussel Hoofdstad; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Long-term assignment

Yearly renewable contracts

Stability within a reliable enterprise

Assignment close to Brussels train-stn

Networking with experienced teams

Company car or mobility budget

Job summary

Kingfisher Recruitment is seeking an experienced IT professional to own a legacy .NET FAT client application within a large Belgian organisation near Brussels. You will analyse the current codebase, document architecture, dependencies and risks, and plan the evolution strategy.

You will stabilise, maintain and improve the application, implement bug fixes and collaborate with ICT teams and business stakeholders to ensure continuity and quality.

Qualifications

• Bachelor’s or Master’s degree in IT (or equivalent through strong experience).
• Senior professional experience with .NET.
• Angular experience is a very big asset.

Responsibilities

• Take end-to-end ownership of an existing business-critical application.
• Analyze the current codebase and document architecture, dependencies and technical risks.
• Stabilize, maintain and improve a non-standard FAT client application with limited documentation.
• Collaborate with the current developer, ICT teams and business stakeholders to ensure continuity and make well-founded technical decisions.
• Define the evolution strategy: targeted fixes, incremental improvements or broader rewrite.

Skills

Senior .NET experience

Pragmatic team player

Fluent English

Dutch & French understanding

Angular experience

Education

Bachelor’s or Master’s degree in IT

Tools

.NET

Angular

Job description

This large Belgian organisation manages an extensive, technically complex and business-critical network. Behind the scenes, reliable IT systems support operational processes where stability, continuity and long-term maintainability are essential.

Within this enterprise environment, significant investments are being made in the modernisation of existing applications and the further evolution of the overall IT architecture. You will join an experienced team where quality, autonomy, technical ownership and clear communication are central.

Responsibilities

You will take end-to-end ownership of an existing business-critical application and ensure a smooth technical handover from the current developer. Your first focus will be to understand the current application landscape, analyze the existing codebase and document the architecture, dependencies and technical risks in a clear and structured way.

The application is currently built in a .NET environment, you will be responsible for stabilizing, maintaining and improving a non-standard FAT client application with limited documentation. You will identify technical debt, assess risks related to stability, security and maintainability, and define the best evolution strategy: targeted fixes, incremental improvements, partial refactoring or, if needed, a broader rewrite.

Beyond analysis, you will also implement bug fixes, improvements and new evolutions where required. You will collaborate closely with the current developer, ICT teams and business stakeholders to ensure continuity and make well-founded technical decisions. This role requires strong autonomy, the ability to bring structure into complexity and the confidence to take ownership in a legacy environment.

Profile

• Bachelor’s or Master’s degree in IT (or equivalent through strong experience)
• Senior professional experience with .NET
• Angular experience is a very big asset
• You're a pragmatic team player
• You work in English and understand Dutch & French

Offer (freelance or permanent)

Freelance:

• A freelance role within a well-established organization
• A long-term assignment with yearly renewable contracts
• Stability within a reliable enterprise environment
• Assignment close to Brussels' train station
• Strong networking opportunities and collaboration with experienced teams

Permanent:

• Company car + fuelcard OR mobilitybudget