HappeningIT - Expert .NET Full Stack Senior

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. Languages French: Fluent English: Professional proficiency Dutch: A plus 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 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. Required Profile Experience Minimum 15 years of experience in software development. Required Technical Skills Back-end / Frameworks: .NET Framework .NET Core 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