Senior Dotnet Developer

Atos; Brussel Hoofdstad; Hybrid; EUR 70,000 - 100,000; Full time

Job summary

Atos in Belgium seeks a Senior .NET Developer with strong Blazor experience to join existing development teams. You will develop, maintain and enhance applications, ensuring high-quality code aligned with client standards.

Ideal candidates have hands-on EF Core, Blazor WebAssembly, SQL Server, MongoDB, RabbitMQ, and TDD expertise, with strong English and Dutch or French communication. Hybrid work model applies.

Qualifications

• Senior-level development experience in .NET
• Strong Blazor WebAssembly experience
• Experience with data stores (SQL/NoSQL) and messaging
• Familiarity with TDD and modern CI/CD practices
• Ability to work in a hybrid team and communicate effectively

Responsibilities

• Develop, maintain and enhance applications according to client standards
• Collaborate with existing development teams and take ownership of deliverables
• Ensure high-quality code delivery and robust testing practices

Skills

EF Core

Blazor WebAssembly

SQL Server

MongoDB

RabbitMQ

TDD

Microservices

Job description

Work Model: Hybrid – 2 days onsite per week

Work Regime: Full-time (100%)

Expected Start Date: Mid-February, or mid-March at the latest

About the Role

Our client is looking for an experienced Senior .NET Developer with strong Blazor expertise to join existing development teams and contribute to ongoing projects.

The successful candidate will be responsible for developing, maintaining, and enhancing applications while adhering to the client's development standards and ensuring high-quality code delivery.

Technical Requirements

The ideal candidate should have strong hands-on experience with the following technologies:

• Entity Framework Core (EF Core): Experience with data access and ORM
• Blazor WebAssembly: Solid experience developing modern web applications
• SQL Server: Strong knowledge of relational databases
• MongoDB: Experience working with NoSQL databases
• RabbitMQ: Experience with message-based communication
• Test-Driven Development (TDD): Strong understanding and practical application of TDD principles
• Microservices Architecture: Considered an advantage

Soft Skills

• Strong communication and collaboration skills
• Ability to take ownership of assigned tasks and deliverables
• Proactive, accountable, and solution-oriented mindset
• Ability to work effectively within an existing development team

Language Requirements

• Good command of English
• Good command of Dutch and/or French

Working Conditions

• Work regime: Full-time (100%)
• Start date: Ideally mid-February, with mid-March as the latest acceptable start date