Senior Software Engineer (Team Contract)

Build the technology behind our holiday contracts

• At […], we are developing a new internal application for creating and managing contracts with our suppliers and contractors.
• As our Senior Software Engineer, you will help build this application from the ground up and replace an existing legacy solution with a modern, future-ready platform. You will have the opportunity to shape both the technical foundation and the way the new team works.
• This is a new team with an initial size of approximately two to three engineers.
• You will first be onboarded within Team Dalyan, working in a group of around five colleagues. Once the new Contracting Team is established, it will separate into its own team with a dedicated scope and responsibilities.

• Location: Rotterdam […] office (Hybrid)
• Start date: December 2026
• Availability : Fulltime

What you’ll do Design and build a new application for creating and maintaining supplier contracts.

Develop cloud-native solutions using C#, .NET and Microsoft Azure.

Build user-friendly React applications for internal users.

Help replace a legacy application with a scalable and maintainable modern solution.

Contribute to system design, architecture and data-modelling decisions.

Develop reliable integrations and work with SQL-based data.

Apply automated testing, CI/CD and DevOps practices throughout the development lifecycle.

Communicate technical decisions, progress, risks and dependencies clearly.

Take ownership from initial des