At Sunweb Group, we’re building and evolving the core systems behind millions of holidays each year. As a Senior Software Engineer, you contribute directly to how our platform is designed, scaled, and improved.

Experiencia, cualificaciones y habilidades interpersonales, ¿tiene todo lo necesario para triunfar en esta ocasión? Descúbralo a continuación.
You’ll work in a small, autonomous Agile team where ownership, pragmatism, and quality go hand in hand. This role goes beyond coding — you influence architecture, improve engineering practices, and help the department grow.

Location: Rotterdam / Girona Sunweb Group office (Hybrid)

Start date: October - November 2026

Availability: Fulltime

What You’ll Do

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- Design and build scalable, cloud-native applications on Azure
- Own technical decisions and contribute to architecture
- Improve and modernize existing (legacy) systems
- Drive engineering practices like CI/CD, testing, and clean architecture
- Identify and reduce technical debt
- Collaborate with product and stakeholders to deliver real impact




- Mentor engineers and contribute to team growth
- Help define team standards and technical direction

Our tech stack
C#, .NET, Azure, SQL, React, GitHub, GitHub Copilot, Visual Studio / VS Code

We actively leverage AI-powered tools such as GitHub Copilot to improve productivity and code quality.

What You Bring

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- 5+ years of experience with C# and .NET
- Experience building cloud-native applications on Azure
- Strong knowledge of SQL and data modeling
- Solid understanding of system design and clean architecture
- Experience with CI/CD, automated testing, and DevOps practices
- Experience with legacy systems and modernization
- Ability to balance speed and quality pragmatically
- Ownership mindset and drive to improve systems and processes
- Strong stakeholder communication skills
- Experience mentoring others and influencing technical direction

Why this role is interesting

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- You have real influence on arch

📌 Senior Software Engineer (Gerona)
🏢 Sunweb Group
📍 Gerona