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Tekst logo luidt "DE Publieke Partner" in vette letters, geflankeerd door horizontale lijnen boven en onder.

Senior .NET Developer

Het logo van Vattenfall met de bedrijfsnaam in grijs, gevolgd door een cirkel die horizontaal verdeeld is in geel aan de bovenkant en blauw aan de onderkant.

Aanvraagnummer: 27027
Contractvorm: Detachering
Organisatie: Vattenfall AB
Locatie: Amsterdam - Noord-Holland
Uren per week: 38 per week
Tarief: Geen maximum
Duur van de opdracht: 11,5 maanden
Regio: Noord-Holland
Startdatum: 18-01-2026
Optie tot verlenging: Mogelijk, maar nog niet bekend
Sluitingsdatum: 14-01-2026 08:49

LET OP! Deze opdracht is gesloten


Working for Vattenfall (formerly Nuon) means being part of one of the leading international energy companies in Northern and Eastern Europe. Together with our 1,300 IT colleagues, we play a central role in supporting and improving internal and external business processes.

Assignment Overview

For this assignment, you will work in a dynamic environment where innovation is part of our DNA. As a Senior .NET Developer, you will play a central role in designing and implementing our Vattenfall.nl website.

Main Responsibilities

As a Senior .NET Developer, you will be part of a dedicated project team focused on innovating, developing, and managing our online platform. Your main responsibilities include:

  • Contribute code to the development of the solution through local builds and deployments as well as CI/CD environments.
  • Be familiar with an Agile way of working.
  • Help Vattenfall grow its software engineering capabilities by contributing to coding norms & standards, software design best practices, and system architecture.
  • Challenge business requirements together with your team's Product Owner.
  • Experience with a Proof-of-Concept-based approach.

You will work in a cross-skilled team under a Product Owner.

Qualifications and Personal Characteristics
  • University or College degree in information technology, mathematics, engineering, or related subjects (or comparable training).
  • Knowledge of MS Azure is required.
  • A proven business acumen and a strong interest in driving value-creating innovation.
  • Fluent written and spoken English.
  • Structured way of working.
  • Experience with integrating (mobile) applications and backend systems.
  • Familiar with technologies such as:
    • .NET Framework 4.7.2
    • .NET 6
    • Optimizely CMS
    • Microsoft Visual Studio
    • Microsoft Azure
    • Microsoft Azure Web Apps
    • ASP.NET (Core)
    • Microservice architecture
    • Event-driven architecture
    • SQL
    • HTML
    • SCSS
    • Angular
    • NX Monorepo