Senior .NET Architect & Tech Lead — Hybrid & Modernization

Atos; Brussel Hoofdstad; Hybrid; EUR 90,000 - 120,000; Full time

Job summary

Atos is seeking a Senior .NET Architect / Technical Lead in a hybrid model (2 days onsite, 3 days remote) in Brussels. You will provide architectural leadership across complex applications, drive modernization toward .NET 10, and guide teams through modern microservices patterns and Kubernetes readiness.

Ideal candidates have 4+ years of experience, strong C#/.NET skills, and fluency in English with Dutch or French. Role requires onsite presence in Brussels two days per week.

Qualifications

• 4+ years of professional experience as a .NET Architect.
• Strong expertise in C# and the .NET ecosystem.
• Experience designing and maintaining complex architectures.
• Experience providing technical leadership to development teams.
• Solid understanding of microservices and modern software architecture.

Responsibilities

• Define, maintain, and communicate target architecture across multiple applications and domains.
• Lead architectural discussions and guide development teams in sound decisions.
• Drive modernization of legacy apps and migration to .NET 10.
• Promote Clean Architecture and modern microservices principles.
• Contribute to the path toward Kubernetes deployment.

Skills

C# Mastery

.NET ecosystem

Microservices

Architecture design

Leadership

Agile

Job description

Atos is seeking a Senior .NET Architect / Technical Lead in a hybrid model (2 days onsite, 3 days remote) in Brussels. You will provide architectural leadership across complex applications, drive modernization toward .NET 10, and guide teams through modern microservices patterns and Kubernetes readiness.

Ideal candidates have 4+ years of experience, strong C#/.NET skills, and fluency in English with Dutch or French. Role requires onsite presence in Brussels two days per week.