Senior .NET Developer – Luxembourg (Hybrid)

About the role

We are looking for a Senior .NET Developer to join a fast‑growing global software company based in Luxembourg. Working in a hybrid setting, you will collaborate with back‑end engineers, software vendors and enterprise clients to design and implement robust API integration solutions.

Key responsibilities

• Lead discovery workshops with clients and translate business needs into technical designs.
• Design, develop and maintain APIs using ASP.NET Core and .NET Core.
• Define integration strategies, micro‑service architectures and DDD‑based solutions.
• Provide technical guidance on API and solution architecture to internal and external stakeholders.
• Participate in code reviews, performance tuning and continuous improvement initiatives.

Required profile

• Several years of professional experience building .NET applications.
• Strong communication skills in English and German, with the ability to present technical concepts to clients.
• Proactive, ambitious and comfortable working in a collaborative, family‑like environment.

Required skills

• .NET / .NET Core
• C#
• ASP.NET Core
• API design and architecture
• Microservices
• Domain‑Driven Design (DDD)
• Modern integration patterns
• Distributed systems

What we offer

• Competitive salary €70,000‑€90,000 per year plus bonus.
• Comprehensive benefits package.
• Hybrid working model (office & remote).
• Opportunity to work with cutting‑edge AI‑powered development tools.
• Supportive team culture that treats employees like family.