Senior .NET Developer

Project overview

Within the Transport Execution Management domain, we are looking for a senior .NET developer to design and deliver reliable, performant, and well-tested software solutions. You will work closely with solution designers and business stakeholders to translate functional requirements into efficient applications, taking responsibility for the entire development cycle.

Main missions:

Application design and development

Cloud and DevOps

Code quality

Collaboration

Profile sought

You have at least 15 years of professional experience, including over 10 years of .NET development.

Soft skills: high autonomy, sense of responsibility for deliverables, excellent problem-solving skills, good communication, ability to work in a team, and maintain a professional attitude under pressure.

Language: fluent English (C2 level). CV must be written in English only.

Work environment

The mission is in the transport sector, within the Transport Execution Management domain. You will work in a Microsoft and cloud technical environment: .NET, Azure, Azure DevOps, Docker, Kubernetes, SQL, and Git. You will collaborate with solution designers and business stakeholders, in a context where English is the working language.

Terms:

• Design, develop, and maintain applications within the .NET ecosystem;
• Develop secure and performant .NET Core Web APIs;
• Develop and maintain Android applications with Xamarin / .NET for Android;
• Develop interfaces with Blazor.
• Develop solutions leveraging Azure Cloud services;
• Contribute to CI/CD pipelines and DevOps practices (Azure DevOps);
• Work with Docker and Kubernetes.
• Produce clean, maintainable, and well-tested code, adhering to SOLID principles and best practices;
• Implement unit tests rigorously;
• Work with SQL databases and Git.
• Collaborate with solution designers and business stakeholders;
• Ensure effective communication and knowledge sharing within the team;
• Take ownership of your deliverables with a high degree of autonomy.
• 10+ years of .NET development;
• 5+ years of Azure Cloud development;
• 5+ years of .NET Core Web API development;
• 5+ years of Xamarin / .NET for Android development;
• 2+ years of experience with Blazor;
• Solid expertise in unit testing;
• Good knowledge of .NET, LINQ, async/await, security practices, and design patterns;
• Experience with Azure DevOps, CI/CD, Docker, Kubernetes, SQL, and Git.
• Location: Paris and the Paris region;
• On-site presence: up to 20 working days during the mission in Brussels (Belgium), depending on client needs;
• Remote work: flexible, to be discussed during interviews;
• Schedule: full-time, 5 days per week;
• Start date: December 21, 2026;
• Duration: 10 months.

Project details

• Start: 20/12/2026
• Duration: 10 mois renouvelable
• Remote: hybrid
• Location: Paris, France, FR
• Rate: 68-80 EUR/h
• Languages: French