Senior Software Engineer
de 6300 a 6700 €/mensualesSunweb Group
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.
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: August 2026
Availability : Fulltime
What you’ll do
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
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
Not ticking every box? At Sunweb Group, we believe curiosity, energy, and the right mindset matter more than meeting every single requirement. If this role excites you, we’d love to hear your story — let’s explore the journey together.
Why this role is interesting
You have real influence on architecture and technical decisions
A pragmatic engineering culture focused on impact
International product with real scale and complexity
Opportunity to own and shape the technical direction and ways of working of the team
What we offer
Monthly gross salary between €6300 and €6700 plus 6 ATV days (based on full-time employment, excluding 8% holiday allowance). Please note: ATV days do not apply to part-time contracts.
Enjoy up to 20% off when booking with our brands for you, your family, and your friends.
As an international company we support a hybrid way of working. We provide you with office furniture and IT equipment.
We enjoy the journey so enjoy 25 holidays based on fulltime employment.
A personalized Reflect & Develop Plan to support your career growth.
Benefit from coaching sessions designed to support your well-being.
Receive work-from-home and travel allowances to ease your daily routine.
The information provided above applies to a Dutch contract. Please note that different terms and conditions will apply in the case of a Spanish contract.
About Sunweb Group
Sunweb Group is one of Europe’s largest online travel platforms, with over 1.3 million customers annually. We operate in 8 international markets with 600+ colleagues across Europe. We combine scale with a fast-moving, ownership-driven culture where teams are trusted to build and improve continuously.
Ready for departure?
Do you want to become part of our team as Senior Software Engineer? Click on “Apply”. Do you have any questions? Please feel free to reach out to our Talent Acquisition team via Ver el correo electrónico en jobs.sunwebgroup.com . We are looking forward to hearing from you!
Closing date for applications: 28th of June
Here’s what you can expect during our selection process:
Initial conversation (via video) with our Talent Acquisition Specialist (week 26 - week 27)
First interview (via video/ live) with the Team Lead and Head of Tech (week 28- week 29)
Second interview (via video/ live) with the Team Lead and a team member (week 30)
Sunweb Group is an equal opportunity employer, which means we do not discriminate in any way. We celebrate diversity and are committed to creating an inclusive and safe environment for all employees.
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