ATS4IT supports its clients in their digital transformation initiatives and AI driven innovations, in different sectors and it's a part MoOngy Group, with over 9,500 employees across Europe, we bring extensive expertise across a wide range of IT domains. With teams in Belgium, Denmark, and a nearshore center in Portugal, we deliver proximity, agility, and real impact across Europe.

Senior .NET Developer (Blazor)

Location: Brussels (Hybrid)

Languages: Dutch and/or French + English

About the Role

We are looking for an experienced Senior .NET Developer to join an established team working on business-critical applications. You will be responsible for designing, developing, and maintaining modern solutions using the latest Microsoft technologies, ensuring high-quality code delivery and adherence to development best practices. The ideal candidate combines strong backend expertise with modern frontend development experience and a passion for clean, scalable software.

Profile

Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
Minimum 5 years of experience in .NET development.
Strong analytical and problem-solving skills.
Experience working in Agile environments.
Strong communication and collaboration skills.
Ability to take ownership and accountability for deliverables.
Proactive mindset with a strong focus on quality and continuous improvement.

Requirements

Mandatory

Strong experience with .NET 8 and C# .
Hands-on experience with Entity Framework Core (EF Core) .
Strong knowledge of Blazor WebAssembly .
Experience with SQL Server .
Experience working with MongoDB .
Knowledge of RabbitMQ or other messaging technologies.
Experience applying Test-Driven Development (TDD) principles.
Experience building scalable and maintainable enterprise applications.
Good communication skills and ability to work within multidisciplinary teams.

Key Responsibilities

Design, develop, and maintain applications using .NET and Blazor technologies.
Deliver high-quality, maintainable, and well-tested code.
Participate in technical design and architecture discussions.
Develop and optimize database interactions with SQL Server and MongoDB.
Implement and maintain messaging solutions using RabbitMQ.
Apply TDD practices and participate in code reviews.
Collaborate closely with business and technical stakeholders.
Troubleshoot and resolve complex technical issues.
Contribute to continuous improvement initiatives and development standards.

Technical Environment

.NET 8
C#
Entity Framework Core (EF Core)
Blazor WebAssembly
SQL Server
MongoDB
RabbitMQ
Test-Driven Development (TDD)
Microservices Architecture
Agile / Scrum

What We Offer

Permanent Contract (CDI) – Long-term stability.
Attractive salary based on your experience and skills.
Additional benefits: Meal vouchers and eco-vouchers (electronic), DKV hospitalization insurance, company laptop, holiday allowance, and year-end bonus.
Free training (technical, behavioral, language) and certifications.
Continuous and personalized career progression support.
Opportunities to work on projects with cutting-edge technologies.

At Moongy Group, we stand for equality and diversity. We create a safe and inclusive environment where opportunities are equal for everyone! We do not discriminate based on age, ethnicity, gender, disability, sexual orientation, or any factor other than merit. If you have the skills for the role, we encourage you to apply!

Senior Fullstack .Net Blazor

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