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 DevOps and automate infrastructure with TerraForm.

• 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.

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
• 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 & DevOps:

• Azure (Cloud Computing)

• Azure DevOps Services

• Azure Databricks

• TerraForm

• 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