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Expert .NET Full Stack Senior

Job in 1000, Brussels, Bruxelles-Capitale, Belgium
Listing for: HappeningIT
Full Time position
Listed on 2026-08-01
Job specializations:
  • Software Development
    .NET Developer, Full Stack Developer, Azure, C# / Unity Developer
Job Description & How to Apply Below
Position: HappeningIT - Expert .NET Full Stack Senior
Job opportunity: senior .NET full stack expert (minimum 15 years of experience)

Location:

France (île-de-France) or Belgium (Brussels)

Long-term contract or permanent employment depending on the candidate's profile

HappeningIT, a recognized IT consulting and staffing firm, is looking for a Senior .NET Full Stack Expert on behalf of one of its major enterprise clients. The successful candidate will contribute to complex and innovative projects within an international environment.

This is a long-term assignment, with the possibility of a permanent position depending on the candidate's profile.

Main responsibilities

Design, develop, and maintain robust, secure, and high-performance software solutions.

Work across both Back-end and Front-end layers according to project requirements.

Actively participate in software architecture and technical design activities.

Build and maintain CI/CD pipelines using Azure Dev Ops and automate infrastructure with Terra Form.

Contribute to a major digital transformation program for a leading company in the energy sector, involving significant technological, organizational, and business challenges.

Optimize data processing using Azure Databricks.

Provide technical guidance and support to internal and client teams.

Required profile

Experience:

Minimum 15 years of experience in software development.

Required technical skills:

Back-end / frameworks:

.NET Framework

.NET Core

ASP.NET

C#

Entity Framework

DDD (Domain-Driven Design)

TDD (Test-Driven Development)

Front-end & applications:

Angular

Windows Forms

Web Applications

Xamarin (Mobile)

Cloud & Dev Ops:

Azure (Cloud Computing)

Azure Dev Ops Services

Azure Databricks

Terra Form

Tools & environment:

Visual Studio

Microsoft SQL Server

Databases (SQL, PostgreSQL, etc.)

Methodologies & soft skills:

Structured software development

Applied computer science

Strong problem-solving skills

Excellent communication skills

Languages:

French:
Fluent

English:
Professional proficiency

Dutch: A plus

Location & working conditions

Position based in île-de-France or Brussels

Hybrid work available depending on the project

Why join this project?

Large-scale project with a modern technology stack

Experienced and dynamic team

Opportunity to work across all layers of a software development project

Transparent, people-focused, and high-quality support from HappeningIT
Position Requirements
10+ Years work experience
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