20 beste vacatures voor de functie van .net developer in den haag (nieuwe medewerkers gezocht)

Senior Software Engineer
Sunweb Group —Rotterdam
- € 6.300 - € 76.618 per maand
- Fulltime
- Hybride werken
- Azure
- DevOps
- SQL
Snel solliciteren
Software Engineer C#
RH Marine —Schiedam
- € 4.290 - € 7.036 per maand
- Parttime
- Hybride werken
- Azure
- DevOps
- Engineering
- Winstdeling
- Flexibele werkuren
Senior .NET/C# Engineer - Virtual Power Plant
Eneco —Rotterdam
- € 95.000 - € 140.000 per jaar
- Hybride werken
- Azure
- Engels
- Winstdeling
- Werk vanuit huis
Software Engineer .NET
Schuberg Philis —Rotterdam
- Parttime
- Azure
- DevOps
- AWS
Senior Software Engineer C#/.NET
Synthra BV —Rotterdam
- Fulltime
- Hybride werken
- SQL
- Reiskostenvergoeding
- Telefoonplan
Snel solliciteren
Freelance Software Engineer .NET
Schuberg Philis —Rotterdam
- Parttime
- Azure
- DevOps
- AWS
Software Developer
Abovomaxlead —Oegstgeest
- Engels
- Kantoor
- Analytisch vermogen
Senior Software Engineer, Windows/Desktop Applications - The Hague, Netherlands
Speechify —Den Haag
- € 30.000 - € 120.000 per jaar
- Thuiswerk
- Doctor
- Windows
- C++
6 dagen
C# Developer
Coolblue —Rotterdam
- Fulltime
- Informatica
- Oracle
- Informatica
- Reiskostenvergoeding
Senior Backend Developer C# .NET
VI Company —Rotterdam
- € 6.000 per maand
- Fulltime
- Hybride werken
- Budget voor professionele ontwikkeling
- Flexibele werkuren
OutSystems Developer
Nature's Pride —Maasdijk
- € 4.837 - € 6.407 per maand
- Fulltime
- Engels
- SQL
- Magazijn
Snel solliciteren
AI engineer Digizorg
Erasmus MC —Rotterdam
- € 3.724 - € 6.825 per maand
- Parttime
- Hybride werken
- Azure
- Engels
- Master
- Reiskostenvergoeding
- Flexibele werkuren
Junior Software Developer
Trescal Nederland —Zoetermeer
- Fulltime
- Informatica
- Azure
- DevOps
Snel solliciteren
Senior Software Engineer, Windows/Desktop Applications - Rotterdam, Netherlands
Speechify —Rotterdam
- € 30.000 - € 120.000 per jaar
- Thuiswerk
- Doctor
- Windows
- C++
PHP Developer
Valicare —Den Haag
- Fulltime
- Kantoor
- JavaScript
- Softwareontwikkeling
- Reiskostenvergoeding
- Budget voor professionele ontwikkeling
Software Engineer Azure / .NET
Bryder —Delft
- € 3.000 - € 5.000 per maand
- Fulltime
- Hybride werken
- Azure
- DevOps
- SQL
- Flexibele werkuren
Snel solliciteren
Medior Back-end Developer (Laravel)
The MindOffice —Vlaardingen
- Fulltime
- Databases
- SQL
- APIs
- Kosteloos parkeren
Senior Software Engineer (m/f/x)
Eye Security —Den Haag
- Fulltime
- Hybride werken
- Engels
- Java
Senior Software Engineer
Innovative Apps —Zoetermeer
- Bel de werkgever
- Java
- Bachelor
Ervaren Software Developer
AVANTAGE —Rotterdam
- € 4.000 - € 6.000 per maand
- Parttime
- Azure
- DevOps
- Kantoor
- Reiskostenvergoeding
- Telefoonplan

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Senior Software Engineer

Sunweb Group -
Rotterdam

Snel solliciteren

Vacaturegegevens

Fulltime
€ 6.300 - € 76.618 per maand

Kwalificaties

CI/CD
Datamodellering
Azure
React
DevOps
Visual Studio
C#
.NET
SQL
Bachelor
Continuous integration
Begeleiding
GitHub
Communicatieve vaardigheden

Volledige vacaturetekst

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: October - November 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

For a Dutch contract (based in our Rotterdam office):

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.
We enjoy the journey so enjoy 25 holidays based on fulltime employment.

For a Spanish contract (based in our Girona office):

Yearly gross salary between €72.042,- and €76.618,- (based on full-time employment)
We enjoy the journey so enjoy 23 holidays based on fulltime employment.

Additionally, we offer:

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.
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.

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 [email protected]. We are looking forward to hearing from you!

Here’s what you can expect during our selection process:

Initial conversation (via video) with our Talent Acquisition Specialist
First interview (via video/ live) with the Team Lead and Head of Tech
Second interview (via video/ live) with the Team Lead and a team member

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.

#LI-Hybrid

#LI-YV1

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